To Troubleshoot Trigger Failures - Agilent Technologies 35670A Service Manual

Troubleshooting the Analyzer

To troubleshoot trigger failures

To troubleshoot trigger failures
Use this test when the trigger mode is suspected of failing or the Input Trigger self test
fails on all channels.
Step 1. Check trigger modes.
G
• Set the power switch to on (
• Press the following keys:
[ ]
System Utility
[
CALIBRATN
[
AUTO CAL OFF
[ ]
Input
[
ALL CHANNELS
[
CH* FIXED RANGE
1
[ ]
Vpk
[ ]
Source
[ ON ]
SOURCE
[ ]
LEVEL
1
[ ]
Vpk
[
FIXED SINE
[ ]
1
[ ]
kHz
[ ]
Inst Mode
[
4 CHANNEL
[
ACTIVE TRACE
[ ] or [
A B C D
[ ]
Meas Data
[
ALL CHANNELS
[
TIME CHANNEL
[
System Utility
[ ]
MORE
[
SERVICE TESTS
[
SPCL TEST MODES
[
SOURCE LEVEL
[ ]
Trigger
[
SOURCE TRIGGER
• If the analyzer is not triggering and the message
is displayed, the A6 Digital assembly is probably faulty.
TRIGGER
Fixed sine wave source triggering occurs at a consistent (but not predictable) point
within the time record.
• Set the frequency synthesizer as follows:
Frequency
Amplitude
Function
4-62
).
l
]
]
]
]
]
] or [ ]
2 CHANNEL
]
]
A B
]
]
]
]
]
]
]
1 kHz
6 Vp-p
Square Wave
Agilent 35670A
WAITING FOR SOURCE