In Case Of Trouble - Agilent Technologies 66319B User Manual

Procedure
23. Connect a jumper wire
across the + and -
terminals of output 2.
24. Press Output On/Off.
25. Press Current,
Enter Number,
<1>, Enter.
26. Press Shift, OCP
27. Press Shift, OCP
28. Press Shift, Prot Clear
29. Turn the unit off and
remove the shorting wire
from the output terminals.

In Case of Trouble

Dc source failure may occur during power-on selftest or during operation. In either case, the display may
show an error message that indicates the reason for the failure.
Selftest Error Messages
Pressing the
Shift, Error
<n> where "n" is a number listed in the following table. If this occurs, turn the power off and then back
on to see if the error persists. If the error message persists, the dc source requires service.
Error No. Failed Test
Error 0 No error
Error 1 Non-volatile RAM RD0 section checksum failed
Error 2 Non-volatile RAM CONFIG section checksum failed
Error 3 Non-volatile RAM CAL section checksum failed
Error 4 Non-volatile RAM STATE section checksum failed
Error 5 Non-volatile RST section checksum failed
Error 10 RAM selftest
Error 11 to 14 VDAC/IDAC selftest 1 to 4
Error 15 OVDAC selftest
Error 80 Digital I/O selftest error
Display
2
0.004V 1.520A
2
CURR <1>
2
0.001V 0.0003A
2
0.001V 0.0003A
2
0.004V 0.998A
keys will show the error number. Selftest error messages appear as: ERROR
Table 4-1. Power-On Selftest Errors
Explanation
Shorts output 2 of the unit.
The CC annunciator is on, indicating that output 2 is in
constant current mode. Output 2 is sourcing current at
its maximum rating, which is the default current limit
setting.
Programs the output 2 current to 1 ampere.
You enabled the overcurrent protection circuit. The
circuit then tripped because output 2 was operating in
constant current mode. The CC annunciator turns off,
and the OCP and Prot annunciators turn on.
You have disabled the overcurrent protection circuit.
The OCP annunciator turns off.
Restores output 2. The Prot annunciator turns off. The
CC annunciator turns on.
The next time the unit turns on it will be restored to the
*RST or factory default state.
Turn-On Checkout - 4
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