4 - Turn-On Checkout

Checkout Procedure

The test in this section checks for output voltage and current on the dc source.

NOTE: To perform the checkout procedure, you will need a wire for shorting the output terminals together.

The following procedure assumes that the unit turns on in the factory-default state. If you need more information about the factory default state, refer to the *RST command in chapter 4 of the Programming Guide. Note that the values shown in the Display column may not exactly match the values that appear on the front panel of your unit.

If you have not already done so, connect the power cord to the unit and plug it in.

Table 4-1. Checkout Programming Values

Model

Voltage

OV Prot

Current

Note:

6631B

8

8.8

10

This checkout procedure is written for

 

 

 

 

models

6632B/66332A

20

22

5

6632B and 66332A. If you have another

6633B

50

55

2

model, enter the correct values from the table

6634B

100

110

1

Where the procedure calls for an <input>.

 

Procedure

Display

Explanation

1.

Turn the unit on. The dc

**********

During selftest, all display segments are briefly

 

source undergoes a self-

 

lit, followed by the HP-IB Address. The display

 

test when you first turn it

 

then goes into meter mode with the Dis

 

on.

ADDRESS 5

annunciator on, and all others off. In Meter

 

 

0.2410V .0006A

mode the *****V digits indicate the output

 

 

 

voltage and the *****A digits indicate the

output current. The flashing digit on the display indicates the digit that will be affected if changes are made to the displayed values using the rotary control or the ã and ä keys. You will only see the changes if the output is ON.

NOTE: Press the Meter key to exit a menu at any time and return to meter mode. If the Err annunciator on the display is on, press the Shift key followed by the Error key to see the error number. See table 4-2 at the end of this chapter.

2.

Check that the dc source

 

You should be able to hear the fan and feel the

 

fan is on

 

air coming from the back of the unit.

3.

Press Voltage,

VOLT 0.000

Programs the output to the selected voltage.

 

<2, 0>, Enter

VOLT <20>

After the value is entered, the display returns to

 

 

 

Meter mode. Because the output has not been

 

 

 

enabled, the meter still indicates 0 volts.

4.

Press Output On/Off

<20.003V>

Turns the output on. The Dis annunciator should

 

 

0.0006A

be off and CV should be on.

5.

Press Shift, OV

VOLT:PROT

Display shows the overvoltage protection trip

 

 

<22.00>

voltage for your unit.

32