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ManualsBrandsAgilent Technologies ManualsPower Supply669xA
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42 Troubleshooting
Firmware Revisions
Firmware revision labels are located on the Front panel ROM, AlU3, and on the Secondary microprocessor, A5U504. You
can obtain the revisions with the GPIB *IDN? query command. The following sample Agilent BASIC program does this:
10 ALLOCATE L$[52]
20 OUTPUT 705;"*IDN?"
30 ENTER 705;L$
40 DISP L$
50 END
For a typical Model 6691A, the controller will return a string with four comma-separated fields, as follows:
"Hewlett-Packard ,6691A,O,fA.01.05sA.01.04pA.0l.02"
The first three fields are the manufacturer, model number and 0. The last field gives the firmware information as follows:
f= front panel firmware revision (A.01.05).
s= secondary interface firmware revision (A.01.04).
p= primary interface firmware revision (A.01.02).
Note The firmware revisions numbers shown here may not match the firmware revision of your instrument.
Firmware revision numbers are subject to change whenever the firmware is updated.
Test Headers
The power supply has two test headers as shown in Figure 3-12, each with a jumper that can be moved to different
positions for various functions. To gain access to the headers, remove the power supply top cover.
Pins Description
Primary Interface Test Connector A2J106
7 and 8 (FLT/INH) Normal operating (and storage) position. DIG CNTL port** is configured for
fault indicator (FLT) output and remote inhibit (RI) input .
1 and 2 (SA Mode) NOT AVAILABLE
3 and 4 (DIG I/O) Install jumper here to configure DIG CNTL port** for digital I/O operation .
5 and 6 (RELAY LINK) Install jumper here to configure DIG CNTL port** for control of external relay
accessories.
** See Appendix D in power supply Operating Manual for information about the
digital control port.
Front Panel Test Connector A1J3
7 and 8 (NORM) Normal operating (and storage) position of jumper.
1 and 2 (SA Mode) NOT AVAILABLE
3 and 4 (INHIBIT CAL) Install jumper here to disable calibration commands and prohibit calibration.
5 and 6 (FACTORY PRESET CAL) Install jumper here to restore original factory calibration constants.