42 Troubleshooting
Front Panel Test Connector A3J3 Pins Description
1 and 2 (SA MODE) With these pins jumpered, the front panel is placed in the SA mode.
Removing the jumper takes the front panel out of the SA mode.
3 and 4 (INHIBIT CAL) With these pins jumpered, the power supply will ignore calibration
commands, thus providing security against unauthorized calibration. With
the jumper removed, the power supply will respond to calibration
commands.
5 and 6 (FACTORY PRESET CAL) With these pins jumpered, the power supply’s calibration constants are set to
their factory preset values. This can be useful if you have trouble calibrating
the unit or if you forget the calibration password. See the "POST REPAIR
CALIBRATION" discussion later in this chapter.
7 and 8 (NORM) This is the normal operating/storage position for the jumper.
Primary Interface Test Connector
A2J106 Pins, For Agilent Models 664xA
& 665xA Only
Description
1 and 2 (SA MODE) With these pins jumpered, the primary interface is placed in the SA mode.
Removing this jumper takes the primary interface out of the SA mode.
3 and 4 (DIG I/O) *With these pins jumpered, the supply’s Digital Control (DIG CNTL) port is
configured to be used with custom digital interface circuits.
5 and 6 (RELAY LINK) *With these pins jumpered, the DIG CNTL port is configured to provide
relay control outputs for relay accessories.
7 and 8 (FLT/INH) *With these pins jumpered (as shipped from the factory), the DIG CNTL
port is configured to provide a fault indicator (FLT) output and a remote
inhibit (RI) input.
*See Appendix D in the Operating Manual for more information.