Adjustment Procedures; Reference Temperature Adjustments; Preliminary Procedure; Figure 5-1. A1 Connector Board, Test-Norm Switch And Adjustment Locations - HP 5501B Operating And Service Manual

Laser head

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5-9.

Adjustment Procedures

5-10.

The following paragraphs contain the adjustment procedures for the HP5501B Laser Head. A

performance test is given in

5-12.

This adjustment sets the laser preheat temperature to 105°C (221°F). The adjustment must be

performed when the laser tube is at room temperature, 21 to 25°C (69.8 to 77.0°F).

5-13.

Test Equipment Required. The reference temperature adjustment requires the following test

equipment: Digital Voltmeter, HP Model 3435A

5-15.

This adjustment must be made with the laser tube at room temperature. If the laser High Voltage

Power Supply (A2) or heater has been on, allow at least two hours with ±15 Volts off before

performing this procedure. Regardless of whether power is on or off, observe the safety

precautions in paragraph 5-4 and proceed as follows:

Remove the HP5501B Laser Head covers by following the procedure outlined in paragraph 8-55.

Check that the TEST-NORM switch (A1S2) located on the A1 Connector Board is set to

NORM. See Figure 5-1.

5-2

Section

HP5501B

Adjustments

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