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•
If the measured voltage is not > 2.5 Vp–p on ALC J1-E3, replace the A3 RF assembly.
•
If the measured voltage is > 2.5 Vp–p on ALC J1-E3, replace the A7 Micro Deck.
4. Go to
Chapter 4, "Post-Repair Procedures and Performance
Pulse Modulation Problems (N5183A)
1. Remove the external cover and the top inside cover. Refer to
instrument covers.
2. Set up the signal generator:
a. Press
.
Preset
b. Press
>
>
FREQ
5
GHz
c. Press
to On.
RF On/Off
d. Press
>
>
AMPTD
0
dBm
e. Press
>
Pulse
Pulse Off On
f.
Press
>
Pulse Period
4
g. Press
>
Pulse Width
2
3. Using a spectrum analyzer, verify that pulse modulation is present on the RF output.
4. Press
>
>
.
FREQ
2
GHz
5. Using a spectrum analyzer, verify that pulse modulation is present on the RF output.
6. If no pulse modulation is present at either frequency, replace the A3 RF Assembly and go to
7. If pulse modulation is present at 5 GHz, but is not present at 2 GHz, replace the A3 RF Assembly and go to
Figure 1-21 ALC J1-A7
Agilent N5161A/62A/81A/82A/83A MXG Signal Generators Service Guide
.
.
to On.
>
.
usec
>
.
usec
J1-A7
Verification".
Chapter 3, "Assembly Replacement"
Troubleshooting
Pulse Modulation Problems (N5183A)
for instructions on removing the
step
11.
step
11.
1-51
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Troubleshooting
