Agilent Technologies 6621A Operating Manual page 81

Front Panel
Response
CAL LOCKED
SKIP SLF TST
Code
0 This is the response to the TEST? query when there are no errors.
20 The timer has failed self-test. Refer to the troubleshooting section in the Service Manual.
21 The RAM has failed self-test. Refer to the troubleshooting section in the Service Manual.
27 The ROM has failed the checksum test. Refer to the troubleshooting section in the Service Manual.
Table 5-8. Error Messages (continued)
GP-IB
Code
18 Calibration was attempted with the Calibration Jumper on the GP-IB board in
the lockout position. Reposition jumper if desired. See Service Manual.
22 The self test jumper on the GP-IB board is in the Skip Self Test position. No
self-test was done. This is for diagnostics only. See Service Manual.
Table 5-9. TEST? Responses
Explanation
Explanation
Remote Operation 81