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Troubleshooting the Analyzer
To troubleshoot trigger failures
3 Check channel trigger circuits.
a Set synthesizer as follows:
Frequency 1 MHz
Amplitude 724 mVp-p
Function Sine Wave
b Using a BNC(m)-to-SMB(f) cable, connect the synthesizer to A36
J2 to check channel 1 trigger or A36 J5 to check channel 2 trigger.
c Press the following keys:
[Tr ig ge r]
[
trigger type]
[
channel 1] or [channel 2]
[
Return]
[chan level]
0
[V]
d If the analyzer now triggers, the A10 Analog Input assembly is
probably faulty.
e If the analyzer does not trigger and channel trigger is the only
function failing, the A36 Trigger is probably faulty.
f Reconnect channel 1 A10 J3 to A36 J2 and channel 2 A10 J3 to
A36 J5.
4 Check trigger control lines.
a Place the analyzer on the side closest to the display.
b Set the synthesizer to 2 Vp-p and connect to the front panel
CHANNEL 1 input using a BNC cable.
c Press the following keys:
[
Range]
1
[V]
[
Trigger]
[
trigger type]
[
channel 1]
d For each TTL signal listed in the following table, check that the
signal is toggling using a logic probe.
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