PROCESS OF THEVSWR AND POWER

MEASUREMENT OF GSM900 ANTENNA AND ANTENNA LINE

BY USING SITE ANALYZER

SUBMITTED BY

PARMAR ANIL N

STEP BY STEP PROCEDURE OF THE VSWR MEASUREMENT AND POWER MEASUREMENT

Put ON the site analyzer by press & hold ON/OFF button for few second…

Screen appear on the display to any one mode in which it was switch off…

Here mode is fault location , so screen appear on display…

Fault Location

45001.0

1.4

VS

WR

Distance(M)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Here we need to change the mode because we

measure the VSWR not localize the fault...

Press the MODE button & screen change to…

Select Mode

Measure match

Fault location

Measure power

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Select MEASURE MATCH button by pressing

selection button & screen change to…

Measure match

188017101.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Here frequency scale is not for GSM900 band

so we have to change frequency band…

Now press CONFIGURATION button & screen

change to…

Frequency

Limit

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Using SELECTION button , select the frequency…

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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1880

1710

VSWR

Start frequency

Stop frequency

MHz

MHz

Select start frequency and stop frequency by using LEFT/RIGHT AROOW button and enter desired frequency by using NUMERIC KEYPAD & press ENTER…

Now press Esc. And screen change to…

Measure match

9608901.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration OFF

Now here we need to calibration ON…

So we need for that calibration kit…

To do calibration , press CALIBRATION button…

Short

Open

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Load

Calibration

Now connect short connector of

calibration kit with RF antenna port of

the site analyzer…

So by using SELECTION button select SHORT & screen change to…

Short Done

Open

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Load

Calibration

Now remove short connector & connect open connector with RF antenna port of the site analyzer…

So by using SELECTION button select OPEN & screen change to…

Short Done

Open Done

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Load

Calibration

Now remove open connector & connect load connector with RF antenna port of the site analyzer…

So by using SELECTION button select LOAD & screen change to…

Measure match

9608901.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ON

Now remove load connector & connect RF antenna port and Jumper using adaptor…

Then press AUTO SCALE & screen change to…

Measure match

9608901.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ON

From this graph we don’t take exact value of VSWR…

For that we need marker on the graph…

So activate marker by press MARKER button & screen change to…

M1

Activate

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Marker

Now select activate by using SELECTION button & screen change to…

M1

Deactivate

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Marker

Now press Esc & screen change to…

Measure match

9608901.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ON

M1

M1: 900 1.19

We need marker on the pick…

So press the TOP ARROW button and marker shift to the pick & screen change to…

Measure match

9608901.0

1.4

VS

WR

Frequency(MHz)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ON

M1

M1: 900 1.19

Here VSWR value is over the acceptable range means fault in transmission line…

So we have to localize the fault…

For that we need change the mode…

So press MODE button and select the fault location by using SELECTION button & screen change to…

Fault Location

45001.0

1.4

VS

WR

Distance(m)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ONM1: 900 1.19

In this screen accuracy of reading is not good…

So we need to set distance scale…

So press the CONFIGURATION button & screen change to…

Distance

Limit

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Now select distance by using selection button & screen change to…

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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450

450

meter

Stop Distance

0Start Distance

Max Distance

Distance

Now select stop distance by using LEFT/RIGHT ARROW button…

Then enter desired distance by using NUMERIC KEYPAD and press enter…

Now press Esc & screen change to…

Fault Location

2501.0

1.4

VS

WR

Distance(m)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ON

Here we also need marker for exact location…

So we have to activate the marker…

So press MARKER and select activate using SELECION button & screen change to…

Fault Location

2501.0

1.4

VS

WR

Distance(m)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ONM1: 1 1.18

M1

Now press TOP ARROW button and marker on the pick & screen change to…

Fault Location

2501.0

1.4

VS

WR

Distance(m)

Save/Recall

Auto Scale

Hold

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Calibration ONM1: 12 1.37

M1

Now we get fault at exact location…

So check that location and rectify fault…

Now for save the reading select Save/Recall by using SELECTION button & screen change to…

Save

Recall

Edit

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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JAIPUR -1M 22/12/2011 2.00PM

JAIPUR -1M 22/12/2011 2.05PM

JAIPUR -1M 22/12/2011 2.10PM

JAIPUR -1M 22/12/2011 2.15PM

Delete

To save the new reading select save by using SELECTION button & screen change to...

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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SURAT B – 1M

A F K P U Z *

B G L Q V Space “

C H M R W [ :

D I N S X ] -

E J O T Y = +

K

L

M

N

O

Now enter name and then press Esc…

So reading saved & screen change to…

Save

Recall

Edit

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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JAIPUR -1M 22/12/2011 2.00PM

JAIPUR -1M 22/12/2011 2.05PM

JAIPUR -1M 22/12/2011 2.10PM

JAIPUR -1M 22/12/2011 2.15PM

Delete

SURAT B - 1M 25/12/2011 9.15AM

POWER MEASUREMENT Now arrange all the connection with S.A and sensor…

50w element towards O/P direction and 5 w element towards I/P direction…

Connect S.A with sensor using D-9 serial straight cable…

Now put ON the S.A…

We have to need change the mode…

So change the mode to MEASURE POWER & screen change to…

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Measure power

WarningDo not apply external power to RF antenna test port

M watt

After few time screen change to…

1 2 3

4 5 6

7 8 9

* 0 #

Esc

Enter

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Measure power

DBM50

0

FWD: 40 wattREF: 0.1 watt

THANKS