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Main check – HP 8360 User Manual

Page 456

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Main Check

2.

3.

4.

5.

6.

7.

8.

9.

Press [SERVICE).

Select

. Check that all tests performed pass.

Press

If the display indicates a user preset was

performed, select Factory Preset . Verify that the green

SWEEP LED is blinking, the amber RF ON/OFF LED is on, and

the red INSTR CHECK LED is off.

P r e s s ( U S E R C A L ) .

Select Tracking

.

a. If the synthesizer has Option 001, step attenuator, select

Auto Track. Wait for the synthesizer to finish peaking before

continuing.

b. If the synthesizer has no step attenuator installed, provide a

good source match on the output connector (a power sensor or

10

attenuator will do). Select Auto Track. Wait for the

synthesizer to finish peaking before continuing.

Press

Select Freq Cal

Menu.

Select

Span Cal Once. Verify that status problems do not

exist (UNLOCK, UNLVLED, or FAULT). An OVEN status message
will appear on the message line if the synthesizer has been
disconnected from ac power. This message will turn off within

10 minutes, if it does not, there may be a problem. If a FAULT

message is displayed, refer to menu map 6, Service to access fault
information.

Terminate the RF output with a good source match (either a
load or power sensor). Press

(

POWER LEVEL

).

Increase the power

level until the unleveled message is displayed on the message line.

Decrease the power level until the unleveled message turns off.
Note the power level reading. Verify that the synthesizer can

produce maximum specified power without becoming unleveled.

This completes the operator’s check. If the synthesizer does not
perform as expected, have a qualified service technician isolate and
repair the fault. See “Service Information.”

Specifications Operator’s Check/Routine Maintenance 4-3