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Performance Tests – Option 011
11. Receiver Input Impedance
2
Press
PRESET
,
MENU
,
NUMBER of POINTS
,
1601
,
x1
.
3
Press
CAL
,
CAL KIT & STDS
,
SELECT CAL KIT
,
N 50
Ω
,
RETURN
,
RETURN
,
CALIBRATE
MENU
,
S11 1-PORT
.
4
Connect an open to the test port cable adapter, by pressing
FORWARD: OPENS
,
OPEN (M)
,
DONE: OPENS
.
5
Connect a short to the test port cable adapter, by pressing
FORWARD: SHORTS
,
SHORT (M)
,
DONE: SHORTS
.
6
Connect a 50
Ω
termination to the adapted test port cable, by pressing
FORWARD: LOAD
,
DONE 1-PORT CAL
.
7
Remove the 50
Ω
termination from the test port cable adapter. Connect the
adapted test port cable to the analyzer Input B. Press
SCALE REF
,
AUTO SCALE
.
8
Press
MARKER
,
300
,
k/m
to set the marker 1 to 300 kHz. Write the marker value,
which appears on the analyzer display, on the “Performance Test Record.”
9
Press
MARKER 1
,
2
,
M/
µ
,
MARKER 2
,
1.3
,
G/n
to set marker 1 and marker 2 to 2 MHz
and 1.3 GHz respectively.
10
Use the analyzer front panel knob to move marker 2 to the peak value between
2 MHz and 1.3 GHz. Write the marker 2 reading on the “Performance Test
Record.”
11
Press
MARKER 1
,
1.3
,
G/n
,
MARKER 2
,
3
,
G/n
to set marker 1 and marker 2 to
1.3 GHz and 3 GHz respectively.
12
Use the analyzer front panel knob to move marker 2 to the peak value between
1.3 GHz and 3 GHz. Write the marker 2 reading on the “Performance Test
Record.”
13
Connect the equipment as shown in Figure 6-18.
NOTE
The marker 2 reading represents the worst case return loss of the receiver input in the
frequency range of 2 MHz to 1.3 GHz.