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4-45
Performance Tests
12. Test Port Input Impedance
Required
Equipment
For 50Ω Analyzers
Cable, APC-7, 24-inch . . . . . . . . . . . . . . . . . . . . . . . . . Agilent P/N 8120-4779
Calibration Kit, 7 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Agilent 85031B
For 75Ω Analyzers
Cable, 75
Ω
, Type-N, 24-inch . . . . . . . . . . . . . . . . . . . . Agilent P/N 8120-2408
Calibration Kit, 75
Ω
, Type-N . . . . . . . . . . . . . . . . . . . . . . . . . . Agilent 85036B
Procedure
1
Connect the equipment as shown in Figure 4-26.
Figure 4-26. S11 1-Port Cal Test Setup
2
Press
PRESET
,
MENU
,
NUMBER of POINTS
,
1601
,
x1
.
3 Only for analyzers without Option 006:
Press
START
,
50
,
k/m
.
4
Press
CAL
,
CAL KIT & STDS
,
SELECT CAL KIT
and select the appropriate calibration
kit:
• If your analyzer is 50
Ω
, press
CAL KIT: 7mm
.
• If your analyzer is 75
Ω
, press
CAL KIT: N 75W
.
5
Press
RETURN
,
RETURN
,
CALIBRATE MENU
,
S11 1-PORT
.
6
Connect an open to reference test port 1, as shown in Figure 4-26.
7
Press
FORWARD: OPEN
.