Signal Board Diagnostics - Agilent Technologies 7820A Service Manual

Signal board diagnostics

Agilent 7820 GC Service
277
Scroll to <Front, or Back detector> and press [Enter].
The list of diagnostics that are available vary with your
configuration. Here is an example of an FID detector.
FRONT FID DIAGNOSTICS
Detector Signal
Pneumatics module
Hydrogen gas
Air gas
Makeup gas
Detector body SN:
Service mode is a series of tables that include information that
can help with diagnosing problems. For example, the detector
signal board diagnostic includes information to verify a short in
an FID ignitor. It also contains a measurement of the Noise in the
signal output.
To access the detector signal board diagnostics:
1 Press [Service Mode].
Scroll to Diagnostics and press [Enter].
Scroll to <Front, or Back detector> and press [Enter].
Scroll to Detector Signal and press [Enter].
The list of diagnostics that are available vary with your detector.
Here is an example of an FID detector.
FRONT SIGNAL (FID)
Signal Value
Noise
High Voltage
(On)
Ignitor (Off)
ADC Offset:
Input disable
Mode:
Mfr date:
8xxxxxx
0.0
0
12.9V
1.14V 2.7A
60.1m Ref: 2.48V
V
Off
Normal
8/15/08