12. MAGNITUDE RATIO/PHASE FREQUENCY RESPONSE TEST
(NA)
Description
This test applies the RF OUT signal to the HP 4395A R input and either the A or B input
through a power splitter. It then measures the magnitude ratio and phase of the A/R and B/R
measurements. The magnitude ratio frequency response is measured as the deviation from the
ideal magnitude ratio value of 0 dB. The phase frequency response is measured as the deviation
from linear phase.
Specication
Magnitude ratio accuracy (A/R, B/R)
@
0
10 dBm input,input att.= 10 dB,Freq.
100 Hz,IF BW
3 kHz, 23
6
5
C
:::::::<
6
2dB
Phase frequency response (Deviation from Linear Phase) (A/R, B/R)
@
0
10 dBm input,input att.= 10 dB,Freq.
100 Hz,IF BW
3 kHz, 23
6
5
C
:::: ::: <
6
12
Test Equipment
Two-Way Power Splitter
:::: :::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::
HP 11667A
Type-N Cable, 61 cm (two required)
:::: :::: ::::: :::: ::::: ::::
HP 11500B or part of HP 11851B
N(m)-N(m) adapter
:::: ::::: :::: ::::: :::: ::::: :::: :::: ::::: :::: ::::: :::: ::::: :::: ::
PN 1250-1475
Procedure
1.
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
Statistics: ON
4
Utility
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
STATISTICS on OFF
(Then the softkey label
changes to
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
STATISTICS ON off
.)
Dual Channel: On
4
Display
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL CHAN on OFF
(Then the softkey label
changes to
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUAL CHAN ON off
.
Source Power:
0
4 dBm
4
Source
5
,
NNNNNNNNNNNNNNNNN
POWER
,
4
-
5
,
4
4
5
,
4
x1
5
IF BW: 1 kHz
4
Bw/Avg
5
,
NNNNNNNNNNNNNNNNN
IF BW
,
4
1
5
,
4
k/m
5
Input Attenuator R: 10 dB
4
Scale Ref
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ATTENUATOR MENU
,
NNNNNNNNNNNNNNNNNNNNNNN
ATTEN R
4
1
5
,
4
0
5
,
4
x1
5
Input Attenuator A: 10 dB
4
Scale Ref
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ATTENUATOR MENU
,
NNNNNNNNNNNNNNNNNNNNNNN
ATTEN A
4
1
5
,
4
0
5
,
4
x1
5
Input Attenuator B: 10 dB
4
Scale Ref
5
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
ATTENUATOR MENU
,
NNNNNNNNNNNNNNNNNNNNNNN
ATTEN B
4
1
5
,
4
0
5
,
4
x1
5
2.
|A/R Magnitude Ratio/Phase Frequency Response Test|
a. Connect the test equipment as shown in setup 1 of Figure 2-18.
2-42 Performance Tests
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