Specifications

Basic Troubleshooting 9-5
SRS Residual Gas Analyzer
Basic Troubleshooting
A unique Error Code has been assigned to each one of the fault conditions that can be
internally detected by the RGA Head. The Error Codes are used only by the RGA
Windows program to report all internally detected errors.
This section lists causes and troubleshooting procedures for all the possible Error Code
values available in the SRS RGA.
Error Code:
DET1
Type of Error:
Electrometer
Error Message:
Electrometer Error: OP-AMP Input Offset Voltage out of range.
Error Cause:
A large offset input voltage is present in one or both of the I-V converter op-
amps. This problem results in electrometer calibration errors, and will cause
erroneous ion current readings.
Troubleshooting:
Contact SRS.
Error Code:
DET3
Type of Error:
Electrometer
Error Message:
Electrometer Error: COMPENSATE fails to read -5nA input current.
Error Cause:
The logarithmic output of the temperature-compensating picoammeter is not
within the levels expected for a -5 nA input current.
Troubleshooting:
Contact SRS.
Error Code:
DET4
Type of Error:
Electrometer
Error Message:
Electrometer Error: COMPENSATE fails to read +5nA input current.
Error Cause:
The logarithmic output of the temperature-compensating picoammeter is not
within the levels expected for a +5 nA input current.
Troubleshooting:
Contact SRS.
Error Code:
DET5
Type of Error:
Electrometer
Error Message:
Electrometer Error: DETECT fails to read -5nA input current.
Error Cause:
The logarithmic output of the picoammeter is not within the levels expected for a
-5 nA input current.
Troubleshooting:
Contact SRS.