Anritsu S332C Specifikace stáhnout pdf (Strana 18)

12. At the CALIBRATION menu display, use

the Menu up-down keys to highlight

START CAL, then press the Select key.

13. At the PRECISION RETURN LOSS

CALIBRATION menu display prompt,

connect the Offset SWR Autotester to

Input A, if you have not done so yet.

14. Connect the precision air line to the Off

set SWR Autotester test port. Position

the air line pointing vertically upward.

Downward or horizontal positions make

connector pin alignment difficult.

NOTE

Ensure that the beadless end of the precision

airline is at the measurement connection

point.

15. Press the

Select key when ready.

16. At the PRECISION RETURN LOSS

CALIBRATION menu prompt, connect

the Open to the beadless end of the air

line. Press the

Select key to start the cali

bration.

17. Verify that the display resembles that

shown in Figure 4, page 14.

CAUTION

During both calibration and mea-

surement, be sure to properly

align the beadless connector of the

airline. When the connectors are

mis-aligned, a spike will usually

be visible on the display.

18. At the next menu prompt, remove the

Open and connect the Short to the

beadless end of the airline. Press the

lect

key to start the calibration process.

19. At the next menu prompt, remove the

Short and connect the 50 Ohm Termina

tion to the beadless end of the air line.

Press the

Select key to start the calibra

tion process.

20. When the calibration is complete, remove

the 50 Ohm Termination.

21. Connect the SM/PL termination to the

beadless end of the air line and press the

Select key to begin the measurement.

22. Observe that the waveform displayed re

sembles that shown in Figure 5.

23. Press the

Cursor On/Off key to On.

24. Observe the Cursor menu readout. The

minimum return loss reading for the

SM/PL termination should be 42 dB.

15. INSTACAL MODULE VERIFICATION

This test verifies the performance of the Anritsu Site

Master InstaCal Calibration Module. The InstaCal

Module, part number ICN50, is an optional accessory

for the S114C and S332C.

NOTE

Full verification of the InstaCal module over

its entire frequency range (2 - 4000 MHz) re

quires both an S114C and S332C Site Master.

However, limited verification is possible with

either instrument for the frequency range of

that instrument only. The frequency range of

the S114C is 2 to 1600 MHz. The frequency

range of the S332C is 25 to 4000 MHz.

14 Site Master S114C/S332C MM

1 0 . 0 d B / D I V O F F S E T1 : P R E C S N R L ( A )

2 : O F F

+ 0 . 0 d B

0 . 4 G H z / D I V

S T A R T : 0 . 0 1 0 0 G H z

4 0 1 p t s

S T O P : 4 . 0 0 0 0 G H z

L E V E L + 7 . 0 d B m

5 4 1 4 7 A

P R E C I S I O N

R E T U R N L O S S

C A L I B R A T I O N

C O N N E C T O P E N

T O A I R L I N E

P R E S S S E L E C T

W H E N R E A D Y

 

Figure 4. Example of a Good Connection

1 0 . 0 d B / D I V O F F S E T1 : P R E C S N R L ( A )

2 : O F F

+ 0 . 0 d B

0 . 4 G H z / D I V

S T A R T : 0 . 0 1 0 0 G H z

4 0 1 p t s

S T O P : 4 . 0 0 0 0 G H z

L E V E L + 7 . 0 d B m

5 4 1 4 7 A

C U R S O R

1 : - 4 6 . 0 2 d B

P R E S S S E L E C T

F O R

C U R S O R M E N U

2 . 4 0 5 0 G H z

 

Figure 5. Direct Readout of the Precision Return Loss

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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