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rear panel. Make sure the correct line voltage is selected before applying input power.
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 fu
rating of the AC source.
3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC mode.
Turn on th
initialize.
Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button.
There should be little or no outp
DMM is in auto ranging mode.
Select the Set screen and use the keypad to program a small volta
DMM reading. The reading should track the programmed voltage.
7. Also monitor the scope display. The output signal should be a sinusoidal voltage waveform.
If the output tracks, increase the voltage until you reach 115V on the low v
the high voltage range. Check the output voltage reading and waveform.
Select the measurement
power will be displayed.
In the unlikely event the power source does not pass the functional test, refer to the calibration
procedure in
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
California Instruments 41
User Manual Compact i/iX Series
R
LOAD
Sense
High
Sense
Low
Output AC
Figure 3-5: Functional Test Setup
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User Manual Compact i/iX Series
3.9 Multi-box Configurations
Multi-box configurations consist of two identical i/iX power source models operating in a
master/auxiliary mode. The master unit is used to program the output for both units. The auxiliary
controller will display a message indicating it is operating as an auxiliary unit1.
The operate two units in a master/auxiliary mode, proceed as follows:
1. Turn off both units.
2. Reconfigure the unit, which will be the auxiliary to operate as an auxiliary unit. This requires
removal of the top cover to adjust the 4-pole DIP switch S2 on the master amplifier (A9) of the
auxiliary unit. The master amplifier is positioned on the right hand side when facing the front of
the unit. The auxiliary amplifier (1501i/iX models only) is located in the middle and requires no
changes in setting. See Table 3-11 for details.
Note that on some compact i/iX models, S2 is a four-position dip switch. On newer models, a
two-position dip switch is used. For either version of the amplifier control board, the S2 dip
switch is located towards the rear of the amplifier. See Figure 3-6 for location.
3. Connect the system interface cable between the two units using the DB15 system connecters
on the rear panel. Use the TO AUX connector on the master unit and the TO MASTER
connector on the auxiliary unit.
4. Connect the output terminals (HI to HI and LO to LO) of each unit’s output together using a
suitable terminal block. Make sure the output wires from each unit to this common point of
connection are equal length.
5. Verify that the master unit is correctly configured. See CONFIGURATION menu, section 4.2.9.
Amplifier, A9 Amplifier, A10 if installed (1501i/iX)
6005-701-1 Rev H or lower 6005-701-1 Rev H or lower
S1 S2 (4 position) S3 S1 S2 (4 position) S3
All-OFF 1&2-ON
3&4-OFF
1-OFF
2-ON
All-OFF 1&2-ON
3&4-OFF
1-OFF
2-ON
6005-701-1 Rev J or higher 6005-701-1 Rev J or higher
S1 S2 (2 position) S3 S1 S2 (2 position) S3
All-OFF 1-OFF
2-OFF
1-OFF
2-ON
All-OFF 1-OFF
2-OFF
1-OFF
2-ON
Table 3-11: Multi box system DIP settings
Note: To reconfigure and auxiliary 751/1501 power source to stand alone operation, set S2 on the A9
module back to to ALL-ON and disconnect the outputs and system interface cable. The auxiliary unit
can now be used stand alone. On the master unit, set the system field back to 751 or 1501 depending
on the model of the unit.
1 This message will disappear when the controls on the auxiliary unit are operated. However, changing settings on the
auxiliary unit controller will not affect the output. Use the master unit controller and or remote control interface to operate
the system.
California Instruments 43
User Manual Compact i/iX Series
Figure 3-6: Location of amplifier configuration switch S2 when facing front of power source.
California Instruments 44
User Manual Compact i/iX Series
Multi-chassis Output Wiring Diagram
Figure 3-7 shows the required output connections for a two chassis system (rear-view perspective).
Always turn off both the Master and Auxiliary power source before making or changing output
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