Agilent Technologies 89410A Service Manual page 102

Troubleshooting the Analyzer
To troubleshoot trigger failures
2
Check trigger modes.
a
Press the following keys:
]
[
Preset
[ System Utility]
[more cal setup]
[
auto zero off ]
]
[ Return
[
]
Range
4
[
dBm]
[ Source]
[source on ]
]
[
source type
[ ]
periodic chirp
[ ]
Return
]
[level
0
[ ]
dBm
[ ]
Frequency
[
]
time data zoom
If the analyzer has two channels, press [
] 4 [ ].
range dBm
b
Connect the SOURCE output to the front panel CHANNEL 1 input
and EXT TRIGGER connectors using a BNC tee and BNC cables.
c Press the following keys while monitoring the display. Note which
trigger types are functioning:
]
[ Trigger
[ ]
trigger type
[ ]
IF channel 1
[ ]
internal source
[ ]
external
[ ]
channel 1
[ ]
Return
[ ]
chan level
200
[ ]
mV
[ ]
chan slope
[ −]
[ ]
+
The message ''WAITING FOR TRIGGER'' is displayed when the
analyzer is not triggering.
d
If the analyzer has the optional second channel, move the source
output to the front panel CHANNEL 2 input and press the
1-84
] [
], then [
Range channel both ch*