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4 - Turn-On Checkout
42
Procedure Display Explanation
7. Plug the output connector
back into the unit.
Restores the output sense connections. The Prot
annunciator is still on.
8.
Press Shift, Prot Clear
NO FAULT
Clears the protection condition. Prot is off; CV is on.
9.
Press Voltage
VOLT 0.000 Display shows the output voltage setting of the unit.
10.
Press Enter Number,
<15>, Enter
VOLT <15>
15.003V 0.0001A
Programs the main output to 15 volts. After the value
is entered, the display returns to Meter mode.
Because the output is enabled, the meter will indicate
the actual output voltage.
11.
Press Output On/Off
0.000V 0.0000A Turn the output off.
12. Connect a jumper wire
across the + and - output
terminals.
Shorts the output of the unit.
13.
Press Output On/Off.
0.004V 3.0712A
The CC annunciator is on, indicating that the unit is
in constant current mode. The unit is sourcing output
current at the maximum rating, which is the default
output current limit setting.
14.
Press Current,
Enter Number,
<1>, Enter.
CURR <1> Programs the output current to 1 ampere.
15.
Press Shift, OCP
0.001V 0.0003A You enabled the overcurrent protection circuit. The
circuit then tripped because the unit was operating in
constant current mode. The CC annunciator turns off,
and the OCP and Prot annunciators turn on.
16.
Press Shift, OCP
0.001V 0.0003A You have disabled the overcurrent protection circuit.
The OCP annunciator turns off.
17.
Press Shift, Prot Clear
0.004V 0.998A
Restores the output. The Prot annunciator turns off.
The CC annunciator turns on.
18. 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.
Only perform steps 19 to 29 if you are verifying an Agilent 66319B or 66319D unit.
Procedure Display Explanation
19. Turn the unit on. Wait for
selftest to complete and
press Shift, Channel.
2
0.025V 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.
20.
Press Voltage,
Enter Number,
<12>, Enter.
2
VOLT <12> Programs the output 2 voltage to 12 volts.
21.
Press Output On/Off
2
12.005V 0.0002A
Turns the main output and output 2 on. The Dis
annunciator is off, but the CV annunciator is on.
22.
Press Output On/Off
2
0.000V 0.0000A Turn all outputs off.