AMETEK Compact i/iX Series - Manual (Page 44)

User Manual Compact i/iX Series
AMETEK Programmable Power California Instruments 44
3.8 Basic Initial Functional Test
CAUTION: Work carefully when performing these tests; hazardous voltages are
present on the input and output during this test.
Refer to Figure 3-5 for the required functional test set up. Proceed as follows to perform a basic
function check of the power system:
1. Verify the correct AC line input rating on the nameplate and the AC line input selector switch at the
rear panel. Make sure the correct line voltage is selected before applying input power.
2. Connect a suitable resistive or other type load to the output of the unit. Suggested load values for
both voltage ranges are shown in Table 3-10. Make sure the power resistor has sufficient power
dissipation capability for full load test and that the load used does not exceed the maximum power
rating of the AC source.
3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC mode.
4. Turn on the power source using the On/Off switch on the front panel. Allow the power source to
initialize.
5. Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button.
There should be little or no output although the DMM may show a noise level, especially if the
DMM is in auto ranging mode.
6. Select the Set screen and use the keypad to program a small voltage (20 VAC). Observe the DMM
reading. The reading should track the programmed voltage.
7. Also monitor the scope display. The output signal should be a sinusoidal voltage waveform.
8. If the output tracks, increase the voltage until you reach 115V on the low voltage range or 230V on
the high voltage range. Check the output voltage reading and waveform.
9. Select the measurement screen by pressing the Meas button. The output voltage, current and
power will be displayed.
In the unlikely event the power source does not pass the functional test, refer to the calibration
procedure in Section 6
or call California Instrument’s customer satisfaction department for further
assistance.
Model 115V on 150 V range 230V on 300 V range
751i/iX 20 Ohm 80 Ohm
1501i/iX 10 Ohm 40 Ohm
Table 3-10: Load Resistance