California Instruments 801RP Series User And Programming Manual
Also see for 801RP Series: Training manual
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Contents
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User and Programming Manual – Rev P California Instruments6.3. Non-Routine Calibration6.3.1. Current Limit Calibration1. Connect the test equipment to the power source as shown in Figure 6-2.2. Locate R31 on the A4 assembly board. Turn R31 clockwise several turns.3. Connect the load to the output. Use the 100 milliohm current shunt in series with theload to measure the AC load current. Refer to Table 2 for the proper full load.4. Set the Current limit with the right shuttle to 95% of the current measured with the shuntand AC Multimeter.5. Turn R31 counterclockwise slowly until the output faults.6.3.2. Voltage Measurement Calibration1. This calibration requires the use of P/RP GUI and a PC communicating with the ACsource via the RS232 interface. The IEEE interface can be used as well, but requiresthat the PC is equipped with a National Instrument GPIB controller card.2. Refer to Section 9 for Installing and starting the GUI to monitor the voltagemeasurements.3. Program the output voltage to 170 volts and 200 Hz. The output must not be loaded.4. Monitor the output voltage with an external voltmeter.5. Locate R128 on the A3 assembly board. Adjust R128 so that the measured valuereported by the GUI measurements agrees with the external voltmeter.6.3.3. DC Offset Adjustments1. Program the output voltage to 230 volts and 60 Hz.2. Measure the DC offset at the output using a Fluke 8840 or equivalent. Verify that offsetis less than ± 0.025V. Measure the DC voltage across a 22 μf capacitor connected tothe output through a 215K resistor. Refer to Figure 6-2.3. Locate R46 on the A3 assembly board. Adjust R46 if required to maintain the DC offsetwithin 0 ±0.025 VDC.RP Series October 2005 27 |
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