sc lab manual
TRANSCRIPT
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LAB MANUAL
OF SATELLITE
COMMUNICATION
Submitted by
Ishita aggarwal
Lecturer ECE
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Experiment 1
Objective:Changing different combinations of uplink
and downlink frequencies and to checkthe
communication link
Equipments Needed:1. UplinkTransmitter
2. Dish Antennas
3. DownlinkReceiver
4. Connecting cables.
5. Satellite Transponder
6. Audio/Video input (VCD)
7. Monitor (TV monitor)
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency displaywill come on.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Dish Antenna to Uplink transmitter withBNC -BNC lead.
5. Place Downlink Receiver at a convenient distance of5-7m. (It can go even up to10m.).
6. Place a Satellite Transponder betweenTransmitter and Receiver at a convenient
distance; preferably all three can be placed in
equidistant triangle of distance 5-7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changed
from 2414-2432 MHz.
10. Attach Dish Antenna to the Downlink receiver with
BNC - BNC lead.
11. Align both the Transmitter and Receiver Antenna's in
line.
12. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz
13. Keep Downlink Frequency of Transponder to 2414
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MHz.
14. Keep the Downlink Receiver to 2414 MHz.
15. Connect the Audio/Video signal at the input
socket provided on the UplinkTransmitter, Video atvideo input and audio at either Audio-I or Audio-II
input.
16. Connect TV monitor to the Audio/Video output
of Downlink receiver. (Video from Video Output,
audio from Audio-I or Audio-II output (as intransmitter)) Set TV in AVMode.
17. To watch Video signal toggle the switch
provided at Transponder unit to the Videoposition.
18. The TV monitor will display video and audio
signal that you have connected to uplink Transmitter
input.
19. Now change uplink-transmitting frequency
from 2468 to 2450 MHz and correspondingly the
receiver frequency of transponder is to be changed
to 2450 MHz you will receive the same quality ofsignal at the output of the
downlinkreceiver.
20. Now change the downlink frequency of
transponder from 2414 to 2432 MHz and similarly
change downlink receiver tuning frequency to 2432
MHz you will be receiving the same quality ofsignal.
R
e
s
ul
t
:
The above experiment shows a successful establishment
of satellite audio/video link between Uplink transmitter
and Downlink receiver at different up-link and down-link
frequencies.
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Experiment 2
Objective:
To set up a active and passive satellite communication link and
study their difference.
Equipments Needed: 1. Uplink Transmitter2. Dish Antennas3.Downlink Receiver4. Connecting cables. 5. Satellite
Transponder
Theory: Passive Satellites: Passive Satellites are the Satellites
that simply reflect a signal back to earth; there are no gain
devices on board to amplify the signal. An advantage being thatthey do not require sophisticated electronic equipment on board,
although they are not necessarily void of power. Some passive
Satellite requires a radio beacon transmitter for tracking &ranging purpose. A beacon is a continuously transmitted
unmodulated carrier that an earth station can lock onto and use toalign its antennas or to determine the exact
location of the Satellite. A disadvantage is there in using thesedue to inefficient use of
transmitted power.
Active Satellites:
Active Satellites are the Satellites that electronically repeat the
signal and send it backto earth. It receives, amplifies, and retransmits the signal. The
communication
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capability of active systems with "the directional antennas
rapidly becomes muchgreater than that of the passive system as the altitude is
increased. The Uplink Transmitter sends signals at an Uplink
frequency, which is higher than downlink frequency to avoid the
interference. The quality of signal is much improved with activesatellite especially when distances between transmitter and
receiver are considerable.
Procedure:
Active satellite
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency display will come
on.
3. The transmitting frequency can be selected by Frequency
Select switch. The
frequency can be changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC -BNC lead.
5. Place Downlink Receiver at a convenient distance of 5-7m. (It
can go even up to 10m.).
6. Place a Satellite Transponder between Transmitter and
Receiver at a convenient
distance; preferably all three can be placed in equidistant triangle
of distance 5-7m.
7. Connect the Satellite Transponder to the AC Mains and switch
it ON by mainsswitch.
8. Connect the Downlink Receiver to the AC Mains and switch it
ON by mainsswitch.
9. The Downlink Receiver Frequency can be changed from
2414-2432 MHz.
10. Attach Antenna to the Downlink receiver with BNC - BNC
lead.
11. Align both the Transmitter and Receiver Antenna's in line.
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12. Adjust transmitter uplink frequency to 2468 MHz and
Transponder receiver
frequency also to 2468 MHz, from frequency select 1 and
frequency select 2.
13. Keep Downlink frequency of Transponder at 2414 MHz.
14. Keep the Downlink Receiver at 2414 MHz.
15. Now Select Tone from Channel select B in Uplink
Transmitter.
16. Set the Downlink Receiver at speaker mode by changing
Channel Select B.
17.Now we can listen the amplified tone at the receiver.
Passive Satellite
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency display will come
on.
3. The transmitting frequency can be selected by Frequency
Select switch. The
frequency can be changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC -BNC lead.5. Place Downlink Receiver at a convenient distance of 5-7m. (It
can go even up to 10m.).
6. Connect the Downlink Receiver to the AC Mains and switch it
ON by mains
7. Switch.The Downlink Receiver Frequency has to remain same
as the transmitter frequency.
8.. Attach Antenna to the Downlink receiver with BNC - BNC
lead.
9. Align both the Transmitter and Receiver Antenna's in line.
10. Now Select Tone from Channel select B in Uplink
Transmitter.
11. Set the Downlink Receiver at speaker mode by changing
Channel Select B.
12. Now we can listen the unamplified tone(reflected signal) at
the receiver.
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Result:
The above setup shows that a successful satellite communicationlink has been
setup between Transmitter and Receiver in case of active and
passive satellite communication with a difference that the
amplified signal is obtained in case of active satellite.
Experiment 3
Communicating VOICE signal through satellite link
Equipments Needed:
1. Uplink. Transmitter
2. Dish Antennas
3. DownlinkReceiver
4. Connecting cables.
5. Satellite Transponder
6. Microphone
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency display
will come on.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect dish Antenna to Uplink transmitter withBNC -BNC lead.
5. Place Downlink. Receiver at a convenient
distance of 5-7m. (It can go even up to 10m.).
6. Place a Satellite Transponder betweenTransmitter and Receiver at a convenient
distance; preferably all three can be placed in
equidistant triangle of distance
5
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m
.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink. Receiver to the ACMains and switch it ON by mains switch.
9. The Downlink. Receiver Frequency can be changed
from 2414-2432 MHz.
10. Attach dish Antenna to the Downlink receiver with
BNC - BNC lead.
11. Align both the Transmitter and Receiver Antenna's inline.
12. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency alsoto 2468MHz.
13. Keep Downlink Frequency of Transponder to
2414MHz.
14. Keep the Downlink Receiver to 2414MHz.
15. Connect microphone input at the socket
marked 'MIC' on the UplinkTransmitter.
16. Select MIC mode from Channel Select B in
Uplinktransmitter.
17. Select the Speaker mode from Channel Select B
in DownlinkReceiver.
18. Speak in the mike and you will hear the same sound
in the speaker ofreceiver.
Result:
The above shows a successful establishment of voice
link between transmitterand receiver.
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Experiment 4
Transmitting and receiving function generator waveformsthrough satellite link
Equipments Needed:
1. UplinkTransmitter2. Dish Antennas
3. DownlinkReceiver
4. Connecting cables.
5. Satellite Transponder
6. Function generator
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency displaywill come on.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC-BNC lead.
5. Place Downlink Receiver at a convenient distance of
5-7m. (It can go even up to
10m.).6. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed inequidistant triangle of distance 5-
7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changedfrom 2414-2432 MHz.
10. The Downlink receiver On-Off toggle
switch will switch On-Off the receiver.
11. Attach Antenna to the Downlink receiver with BNC -
BNC lead.
13. Align both the Transmitter and Receiver Antenna's in
line.
14. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
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to 2468MHz.
15. Keep Downlink Frequency of Transponder to
2414MHz.
16. Keep the Downlink Receiver to 2414MHz.
17. Connect function generator Triangular wave
output to Audio-I socket provided on uplink
transmitter.
18. Connect Audio-I socket of downlink receiver to the
Oscilloscope.
19. Feed the signal of 1 KHz Triangular wave andyou will observe similar wave of same frequency
on Oscilloscope.
Result:
Function generator waveforms are successfullyreceived at downlink receiver through satellite
communication link.
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Experiment 5
Establishing a direct communication link between Uplink
Transmitter and Downlink
Receiver using tone signal.(digital baseband signal)
Eq
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Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter and frequency display will come
on.
3. The transmitting frequency can be selected by
frequency select switch. The frequency can be changed
from 2450-2468 MHz
4. Connect Antenna to Uplink transmitter with BNC -BNC lead.
5. Place Downlink Receiver at a convenient distance of 5 -
7m. (It can go even up to 10m.).
6. Connect the Downlink Receiver to the AC Mains and
switch it ON by mains switch.
7. The Downlink Receiver Frequency can also be changed from2414-2432 MHz
8. Attach Antenna to the Downlink receiver with BNC - BNC
lead.
9. Align both the Transmitter and Receiver Antenna's in line.
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10. Keep the Uplink transmitter and Downlink receiver
frequency to the same frequency.
11. Now Select the Tone from Channel Select B, so as
to transmit tone signal from Uplinktransmitter.
12The Tone signal is switched to Audio II of transmitter andtransmitted.
13. Make the Downlink Receiver in Speaker mode with
the help of Channel
Select B
14. To observe Tone Signal on CRO select Tone mode from
the Channel SelectB.
15. Connect CRO probes to received tone socket.
16. By changing the frequency and amplitude observe the
received tone on CRO as well asonspeaker.
Result:
A clear music indicates that the microwave link
has been successfully setup between uplink
transmitter and down link receiverdirectly.
Experiment 6
Transmitting and receiving PC data through satellite link
Equi
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Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter by Mains switch
and frequency display will light up.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC-BNC lead.
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5. Place Downlink Receiver at a convenient distance of
5-7m. (It can go even up to
10m.).
6. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed inequidistant triangle of distance
5-7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changedfrom 2414-2432 MHz.
10. Attach Antenna to the Downlink receiver with BNC -BNC lead.
11. Align both the Transmitter and Receiver
Antenna's in line such that both are in parallel
alignment.
12. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
13. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz.
14. Keep Downlink Frequency of Transponder to 2414
MHz.
15. Keep the Downlink Receiver to 2414 MHz.16. Switch ON the PC's and install software.
17. Connect interfacing cable from USB port of uplinktransmitter to first PC.
18. Connect the interfacing cable from USB port of
Downlink receiver to 2nd
PC.
19. Install the drivers so that USB device is detected.
20. Now Select appropriate communication port and
Baud Rate (19200) on both
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PC's.
21. To watch PC Data toggle the switch provided at
Transponder unit to the Video position.
22. Select 1st
PC as transmitter and 2nd
PC as a receiver
on the software window.
23. When the link is established, the typed matter
on first PC will be received to second PC via
Satellite link.
Result:
PC data transmitted from first PC is received in
the second PC via Satellite link.
Experiment 7
To calculate signal to noise ratio of established satellite
link
Equipments Needed:
1. UplinkTransmitter
2. Dish Antennas
3. Satellite Transponder
4. DownlinkReceiver
5. CRO Connecting cables.
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter by Mains switch
and frequency display will light up.
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3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC
-BNC lead.5. Place Downlink Receiver at a convenient distance of
5-7m. (It can go even up to
10m.).
6. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed in
equidistant triangle of distance 5-
7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changed
from 2414-2432 MHz.
10. Attach Antenna to the Downlink receiver with BNC -BNC lead.
11. Align both the Transmitter and Receiver
Antenna's in line, such that both are in parallel
alignment.12. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz.
13. Keep Downlink Frequency of Transponder to 2414MHz.
14. Keep the Downlink Receiver to 2414 MHz.
15. Now Select the Tone from Channel Select B,
so as to transmit tone signal from Uplink
transmitter.
16. Make the Downlink Receiver in Tone mode with
the help of Channel Select
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B.
17. Observe Tone Signal on CRO and measure its
amplitude. (The received tone has original signal
and noise both, say it S1 ).
18. Now change Tone mode to any other modewith the help of Channel Select B of the
uplink transmitter and again measure amplitude
of received signal at downlink receiver (This
signal have only noise, say it N).
19. Now subtract amplitude of noise from previously
received signal (Tone +
noise), you can get actual
tone signal amplitude (say it
S). S = S1 N
20. Calculate signal to noiseratio from the formula.
Signal to noise ratio = S /NSignal to noise ratio (in dB) = 20 log S /N
Result:
Signal to
noise ratio
(in numeric)
=_
Signal to
noise ratio
(in dB) =_
__dB
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Experiment 7
Study the delay between Uplink transmitter and
Downlink receiver during data transmission.
Equipments Needed:
1. UplinkTransmitter
2. Dish Antennas
3. DownlinkReceiver
4. Connecting cables.
5. Digital Storage Oscilloscope
6. Satellite Transponder
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter by Mains switch
and frequency display will light up.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC
-BNC lead.
5. Place Downlink Receiver at a convenient distance of5-7m. (It can go even up to
10m.).
6. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed inequidistant triangle of distance
5-7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changed
from 2414-2432 MHz.
10. Attach Antenna to the Downlink receiver with BNC -BNC lead.
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11. Align both the Transmitter and Receiver
Antenna's in line such that both are in parallel
alignment.
12. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz.
13. Keep Downlink Frequency of Transponder to 2414
MHz.
14. Keep the Downlink Receiver to 2414 MHz.
15. Select Data mode in the uplink transmitter using
Channel Select A.
16. Select Data mode in the downlink receiver usingChannel select A.
17. To observe data from data generator, toggle the
switch provided at Transponder unit tothe
Telemetryposition.
18. Connect the DSO to Received Data section and
observe the data.
19. The recommended DSO settings are as follows:
l Adjust the Time/Div knob at 50ms.
l Adjust Volt/Div. Knob at 2V.
l Set appropriate trigger level, so that the signal
becomes stable on screen.
20. Now slightly move the Delay Adjust knob andobserve the changes in the Data stream onDSO.
Result:
The experiment can be useful to observe simulated delayin satellite.
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Experiment 8(a)
To send tele-command and receive intensity of light fromsatellite
Equipments Needed:
1. UplinkTransmitter2. Dish Antennas
3. DownlinkReceiver
4. Satellite Transponder
5. Connecting cables
Procedure:
1.Connect the Satellite Uplink transmitter to AC Mains.
2.Switch ON the transmitter by Mains switch and
frequency display will light up.
3.The transmitting frequency can be selected by
Frequency Select switch. The frequency can be changed
from 2450-2468 MHz.
4.Connect Antenna to Uplink transmitter with BNC -BNC lead.
5.Place Downlink Receiver at a convenient distance of 5-7m. (Itcan go even up to
10m.).
6.Place a Satellite Transponder between Transmitter and
Receiver at a convenient distance; preferably all three canbe placed in equidistant triangle of distance 5-
7m.
7.Connect the Satellite Transponder to the AC Mains and
switch it ON by mains switch.
8.Connect the Downlink Receiver to the AC Mains and
switch it ON by mains switch.
9.The Downlink Receiver Frequency can be changed
from 2414-2432 MHz. Attach Antenna to the
Downlink receiver with BNC - BNC lead.Align both
the Transmitter and Receiver Antenna's in line such
that both are in parallel alignment.
10.Adjust transmitter uplink frequency to 2468 MHzand transponder receiverfrequency also to 2468 MHz.
11.Keep Downlink Frequency of
Transponder to 2414 MHz. Keep the
Downlink Receiver to 2414 MHz.
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Select Tele mode in uplink transmitter and downlink
receiver using Channel select A.
The telemetry section has three toggle switches indicated E
for enable, A1& A0 for selecting Light intensity and
Temperature respectively. The command for light
intensity is 6.
12.In uplink Transmitter switch on the toggle E so that
telemetry becomes enable. Now toggle On A1 and
toggle Off A0 for Light Intensity and do same set-
up fordownlin
k
receiver.
To watch telemetry signal toggle the switch provided at
Transponder unit to the Telemetryposition.
You will find that the intensity of light in percentageform is appearing on the
LCD screen of
downlinkreceiver.
Change the intensity of light manually by using any light
source on transponder, the same ratio of percentage will
appear on the LCD screen.
Result:
As you send tele-command for light intensity, thetransponder starts sending status of light intensity to
the receiver.
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Experiment 8(b)
To send tele-command and receive Temperature from
satellite
Equipments Needed:
1. UplinkTransmitter
2. Dish Antennas
3. DownlinkReceiver
4. Satellite Transponder
5. Connecting cables
Procedure:
1. Connect the Satellite Uplink transmitter to AC Mains.
2. Switch ON the transmitter by Mains switch
and frequency display will light up.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
4. Connect Antenna to Uplink transmitter with BNC
-BNC lead.
5. Place Downlink Receiver at a convenient distance of
5-7m. (It can go even up to
10m.).6. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed in
equidistant triangle of distance
5-7m.
7. Connect the Satellite Transponder to the AC
Mains and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be changed
from 2414-2432 MHz.
10. Attach Antenna to the Downlink receiver with BNC -
BNC lead.
11. Align both the Transmitter and Receiver
Antenna's in line such that both are in parallel
alignment.
12. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz.
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Scientech Technologies Pvt. Ltd.
90
ST2272A
13. Keep Downlink Frequency of Transponder to 2414MHz.
14. Keep the Downlink Receiver to 2414 MHz.
15. Select Tele mode in uplink transmitter and
downlink receiver using Channel select A.
16. The telemetry section has three toggle switches
indicated E for enable, A1 & A0 for selecting
Light intensity and Temperature respectively.
17. In uplink Transmitter switch on the toggle E so thattelemetry becomes enable.
18. Now toggle On A0 and toggle Off A1 for
Temperature and do same set-up for downlink
receiver. The tele command for temperature is 5.
19. To watch telemetry data toggle the switch providedat Transponder unit to the
Telemetryposition.
20. You will find that the Temperature of transponder
is appearing on the LCD
screen ofreceiver.
Result:
As you send tele-command for temperature, the
transponder starts sending status oftemperature to the
receiver.
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Theory:
The Uplink Transmitter sends signals at an Uplink
frequency, which is higher than downlink frequency
to avoid the interference. The quality of signal ismuch improved with active satellite especially when
distances between transmitter and receiver are
considerable.
P
r
o
c
e
d
ur
e
:
1. Connect the SatelliteUplink transmitter to AC
Mains.
2. Switch ON the transmitter and
frequency display will come on.
3. The transmitting frequency can be selected by
Frequency Select switch. The frequency can bechanged from 2450-2468 MHz.
4. Connect Antenna to Uplinktransmitter with BNC BNC lead.
5. Place Downlink Receiver at a convenient
distance of 5-7m. (It can go even up to10m.).
6. Place a Satellite Transponder between Transmitter
and Receiver at a convenient distance;
preferably all three can be placed in equidistant
triangle of distance 5-
7m.
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7. Connect the Satellite Transponder to the AC Mains
and switch it ON by mains switch.
8. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
9. The Downlink Receiver Frequency can be
changed from 2414-2432 .
10. Attach Antenna to the Downlinkreceiver with BNC - BNC lead.
11. Align both the Transmitterand Receiver Antenna's in
line.
12. Adjust transmitter uplink frequency to 2468
MHz and Transponder receiver frequency also to
2468 MHz, from frequency select 1 and frequency
select 2. 13Keep Downlink frequency of Transponder
at 2414 MHz.
14. Keep the
Downlink Receiver
at 2414 MHz.
15. Now Select Tone from Channelselect B in UplinkTransmitter.
16. Set the Downlink Receiver at speaker modeby changing Channel Select B.
L
i
n
k
Fa
i
l
O
p
e
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a
t
i
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o
n
:
By switching Off the Power of SatelliteTransponder, you can demonstrate a Link Fail
operation.
Re
s
u
l
t
The above setup shows that a successful satellite
communication link has been setup between
Transmitter and Receiver.
The link failure operation can be
understood from theprocedure.
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Experiment 10
Establishing an Audio-Video satellite link between
Transmitter and Receiver
Equipments Needed:
1) UplinkTransmitter
2) Dish Antennas
3) DownlinkReceiver
4) Connecting cables
5) Satellite Transponder
6) Audio/ Video input (VCD)
7) Monitor (TV monitor)
Procedure:
1. Connect the Uplink Transmitter to the AC
Mains and switch it ON by mains switch.
2. The transmitting frequency can be selected by
Frequency Select switch. The frequency can be
changed from 2450-2468 MHz.
3. Connect dish Antenna to Uplink transmitter with
BNC -BNC lead.
4. Place Downlink Receiver at a convenient distance of
5-7m. (It can go even up to10m.).
5. Place a Satellite Transponder between
Transmitter and Receiver at a convenient
distance; preferably all three can be placed in
equidistant triangle of distance 5-
7m.
6. Connect the Satellite Transponder to the ACMains and switch it On by mains switch.
7. Connect the Downlink Receiver to the AC
Mains and switch it ON by mains switch.
8. The Downlink Receiver Frequency can be changed
from 2414-2432 MHz.
9. Attach dish Antenna to the Downlink receiver with
BNC - BNC lead.
10. Align both the Transmitter and Receiver Antenna's inline.
11. Adjust transmitter uplink frequency to 2468
MHz and transponder receiver frequency also
to 2468 MHz.
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12. Keep Downlink Frequency of Transponder to 2414
MHz.
13. Keep the Downlink Receiver to 2414 MHz.
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14. Connect the Audio/Video signal at the input socket provided on theUplink
Transmitter, Video at video input and audio at either Audio-I or Audio-II
input.
15. To watch Video signal toggle the switch provided at Transponder unit to
the
Videoposition.
16. Connect TV monitor to the Audio/Video output of Downlink receiver.
(Video from Video Output, audio from Audio-I or Audio-II output (as in
transmitter)) Set TV in AVMode.
17. The TV monitor will display video and audio signal that you have connectedto
Uplink Transmitterinput.
18. Try link fail by using TransponderOFF.
Result:
The monitor display shows that a successful audio and video link has
been establish between Transmitter and Receiver through satellite.
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