Voltech DC1000A User manual

QUICK START GUIDE - USING MULTIPLE DC1000S WITH A LCR METER PAGE 1 OF 3 104-174/1
The hi h output impedance of the DC1000 allows it to be used with almost any manufacturer’s LCR meter.
The unique topolo y also allows you to parallel up to 20 units so that up to 500A can be enerated.
The followin document explains how to setup your environment to use multiple DC1000s with an LCR meter.
In the followin example we will connect 3 DC1000As to ether to provide 0-75Amps whilst measurin usin an LCR Meter.
A) Connect RS232 + Interlocks.
RS232.
Use the 77-046 strai ht throu h 9w-9w M-F leads provided with the
unit.
Connect RS232 OUT from the first unit to the RS232 IN on the second
unit.
Connect RS232 OUT from the second unit to the RS232 IN on the
third unit.
The first unit will automatically become the “Master” unit and will
control the other units in the chain.
Sa ety Interlocks.
Insert your interlock system or interlock override plu into the Interlock
IN on the first unit.
Connect Interlock OUT on the first unit to Interlock IN on the second
unit.
Connect Interlock OUT on the second unit to Interlock IN on the third
unit.
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Quick Start Guide
Using Multiple DC1000s with a LCR Meter

QUICK START GUIDE - USING MULTIPLE DC1000S WITH A LCR METER PAGE 2 OF 3 104-174/1
B Open circuit Compensation
1 Remove any UUT (unit under test).
2 Connect the DC1000 outputs in parallel usin the test leads
provided.
Make sure the leads common to ether at the point of contact with the
UUT. Try to keep all test leads in the same position as when the UUT
is present.
3 Turn the DC1000s and LCR meter ON and allow to warm up for 30
minutes.
4 Set DC1000 on the MASTER unit to 0.00 AMPS, usin rotary knob
if needed.
5 On the MASTER unit, set DC1000 output to ON, by pressin “output”
button. All 3 reen OUTPUT LEDs will li ht.
The 2 slave units oran e REMOTE LEDs will also li ht showin they
are bein controlled by the Master unit.
6 Perform Open Circuit Compensation on your LCR meter
(sometimes called “Open Correction”).
7 Remember to compensate at all requencies at which you want to
measure.
8. Press the Master OUTPUT button to turn all the DC1000s OFF.
C Short circuit Compensation
1 Fit a short between all leads. A Bus Bar or thick copper wire is ideal
for this, as it will ive ood contact to all 4 clips. Try to keep all test
leads in the same position as when the UUT is present.
2 Set DC1000 to 0.00 AMPS, usin rotary knob if needed.
3 On the MASTER unit, set DC1000 output to ON, by pressin “output”
button. All 3 reen OUTPUT LEDs will li ht.
The 2 slave units oran e REMOTE LEDs will also li ht showin they
are bein controlled by the Master unit.
4 Perform Open Circuit Compensation on your LCR meter
(sometimes called “Short Correction”).
5 Remember to compensate at all requencies at which you want to
measure.
6 Press the Master OUTPUT button to turn all the DC1000s OFF.

QUICK START GUIDE - USING MULTIPLE DC1000S WITH A LCR METER PAGE 3 OF 3 104-174/1
D Running 3 units in parallel
Once you have compensated the LCR for the leads and DC1000s you
can now make measurements under load.
1 Turn the DC1000 output OFF.
2 Add your UUT back into the circuit, attemptin to keep the test leads
in the same position as when compensatin .
3 Select the DC Bias Current you require usin the rotary knob on the
MASTER unit. The Slave units will adjust automatically. In the example
shown each unit is providin 15.00 AMPS to ive a total DC bias
current of 45.00 AMPS.
4 Enable the DC Bias Current by pressin OUTPUT on the MASTER
unit
5 Perform measurements on the LCR.
6 Adjustments can be made to the DC BIAS level while the output is
enabled (and the LCT is measurin ) usin the rotary knob.
E Best Practice / Warnings
1 DO NOT disconnect the UUT or LCR whilst the DC1000 is operatin .
2 Always remove the DC BIAS current by disabling the OUTPUT button before disconnectin
either the UUT or the LCR meter.
3 Always try to keep all leads in the same position to improve the accuracy of the
compensation, and hence the accuracy of your measurements.