HP 4395A - Page 55

8. INPUT CROSSTALK TEST (NA)
Description
This test measures the crosstalk (signal leakage interference) between two inputs of the
HP 4395A R, A, and B inputs when RF OUT signal is supplied to one input and the other is
terminated.
Specication
Input crosstalk
R to A, B(@R port att.=20 dB, 10 dBm input, A & B port att.=0 dB)
freq. < 100 kHz :::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: ::::< 0 100 dB
freq.  100 kHz :::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: ::::< 0 120 dB
Test Equipment
Type-N Cable,61 cm ::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: ::: HP 11500B or part of HP 11851B
50 Termination (two required) ::: :::: ::::: :::: ::::: ::
HP 909C Opt. 012 or part of HP 85032B
Procedure
1. Connect the test equipment as shown in Figure 2-10.
Figure 2-10. Input Crosstalk Test Setup
2.
Press 4
Meas
5 ,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ANALYZER TYPE ,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NETWORK ANALYZER , 4
Preset
5 to initialize the HP 4395A. Then
set the controls as follows:
Control Settings Key Strokes
Dual Channel: On
4
Display
5 ,
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL CHAN on OFF (Then the softkey label
changes to
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL CHAN ON off .
Performance Tests 2-23