Turn-On Checkout - 4
47
Only perform steps 23 to 33 if you are verifying an Agilent 66309B or 66309D unit.
Procedure Display Explanation
23. Turn the unit on. Wait for
selftest to complete and
press Shift, Channel.
20.025V 0.0002A Shift Channel toggles between channel 1 and channel
2. The left-most digit of the display identifies the
output channel that is presently being controlled. It will
indicate a "1" for channel 1, or "2" for channel 2.
24. Press Voltage,
Enter Number,
<12>, Enter.
2VOLT <12> Programs the output 2 voltage to 12 volts.
25. Press Output On/Off 212.005V 0.0002A Turns the main output and output 2 on. The Dis
annunciator is off, but the CV annunciator is on.
26. Press Output On/Off 20.000V 0.0000A Turn all outputs off.
27. Connect a jumper wire
across the + and -
terminals of output 2.
Shorts output 2 of the unit.
28. Press Output On/Off.20.004V 1.520A 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.
29. Press Current,
Enter Number,
<1>, Enter.
2CURR <1> Programs the output 2 current to 1 ampere.
30. Press Shift, OCP 20.001V 0.0003A 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.
31. Press Shift, OCP 20.001V 0.0003A You have disabled the overcurrent protection circuit.
The OCP annunciator turns off.
32. Press Shift, Prot Clear 20.004V 0.998A Restores output 2. The Prot annunciator turns off. The
CC annunciator turns on.
33. Turn the unit off and
remove the shorting wire
from the output terminals.
The next time the unit turns on it will be restored to the
*RST or factory default state.
In Case of Trouble