4

Turn-On Checkout

Checkout Procedure

Successful tests in this chapter provide a high degree of confidence that your unit is operating properly. For verification tests, see appendix B. Complete performance tests are given in the Service Guide.

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 8. Note that the values shown in the Display column may not exactly match the values that appear on the front panel of the unit.

If you have not already done so, connect the power cord to the unit and plug it in. Connect the output connector to the back of the unit with the sense jumpers installed.

 

Procedure

Display

Explanation

1.

Turn the unit on. The dc

**********

During selftest, all display segments are briefly lit,

 

source undergoes a self-test

ADDRESS 5

followed by the GPIB Address.

 

when you first turn it on.

0.000V 0.0001A

The display then goes into meter mode with the Dis

 

 

annunciator on, and all others off. In Meter mode the n.nnnV digits indicate the output voltage and the

.nnnnA 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 ∪ and ⊃ 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 4-1 at the end of this chapter.

2.Check that the fan is on.

You should be able to hear the fan and feel the air coming from the back of the unit.

3.

Unplug the output connector

-0.224V

0.0000A

The output voltage indicates approximately -0.2 volts

 

from the back of the unit.

 

 

because the output sense connections have opened.

4

Press Output, scroll to

SENSE:PROT ON

Enables the open sense detect circuit.

 

SENSE:PROT and select

 

 

 

 

ON. Press Enter

 

 

 

5.

Press Output On/Off

-0.224V

0.0000A

The open sense detect circuit disables the output. The

 

 

 

 

Dis annunciator is off, but the Prot annunciator is on.

6.

Press Protect

+/- SENSE OPEN

Display indicates the protection condition.

45

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Agilent Technologies 66311B, 66309B Checkout Procedure, Procedure Display Explanation, Press Output On/Off, Press Protect
Page 44 Page 46

66111A, 66309B, 66311B, D specifications

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