Kepco Power Supply ATE 75-1.5M

Connect power supply to 115V a-c source or refer to par. 2-4 for other input voltages, if required.

Turn CURRENT CONTROL fully clockwise.

Turn VOLTAGE CONTROL fully counterclockwise.

Turn A-C POWER SWITCH/CIRCUIT BREAKER 'on'.

Is the VOLTAGE VIX indicator energized?

Observe and record the gradual increase of the output voltage as VOLTAGE CONTROL is turned clockwise.

Does the VOLTMETER read full scale?

Check the PRECISION VOLTMETER (M1) for 'zero' reading and correct, if necessary, with the PREAMP 'B' ZERO CONTROL.

Calibration of EXT. CURRENT CONTROL

Set EXT. CURRENT CONTROL to its maximum resistance.

Observe M1 and calibrate the ATE output current to the exact maximum rated value by adjusting the EXT. I₀ CAL. control.

Set EXT. CURRENT CONTROL to zero ohms again.

Re-check the previously calibrated zero point on M1 and correct with the PREAMP 'B' ZERO control if required.

Check the PRECISION VOLTMETER (M1) 'zero' reading and correct, if necessary, with the ATE I₀ ZERO control.

Model SN-488 Output Calibration

Set the Model SN-488 output to 1 volt.

Observe M1 and calibrate the ATE output current to the exact maximum rated output current by means of the SN-488 calibration control.

Set the Model SN-488 output to 'zero' again.

Check the previously calibrated zero point on M1. Correct with the ATE I₀ ZERO control if required.

Check the PRECISION VOLTMETER (M1) for 'zero' reading and correct if necessary with the PREAMP 'A' ZERO control.

Set EXT. VOLTAGE CONTROL to its maximum resistance.

Observe M1 and calibrate the ATE output voltage to the exact maximum rated value by adjusting the EXT. I₀ CAL. control.

Set EXT. VOLTAGE CONTROL to zero ohms again.

Re-check the previously calibrated zero point on M1 and correct with the PREAMP 'A' ZERO control if required.

Refer to Section II, FIG. 2-1 for the location of all internal power supply controls

Refer to SN-488 system manual for the location of the system calibration controls

Set VOLTAGE CONTROL SIGNAL to zero

Check the PRECISION VOLTMETER (M1) for 'zero' reading

Correct the 'zero' reading with the 'E₀ ZERO' control if necessary

Set VOLTAGE CONTROL SIGNAL to its maximum value