Transmille EA008 - Manual (Page 5)

EA003 OPTICAL TACHOMETER CALIBRATION ADAPTER
OPERATION MANUAL
Transmille Ltd. Page 5
Connections to the 3000 series Calibrator
The EA008 15 pin d-type connector connects to the ‘adaptor interface’ connector on the
front panel of the 3000 series calibrator using the 15 pin cable supplied. For resistance
measurement it is also required to connect the red & black 4mm sockets on the adaptor to
the voltage output sockets on the front panel of the 3000 series calibrator.
The calibrators RS232 serial interface must also be connected to a PC running the VFP
program.
Loading the VFP software onto PC.
Insert the CD supplied into the PC. The CD will auto run. (dependant on PC settings)
Follow on screen instructions.
Basic operation steps and Connection to UUT
Measure pA.
1: Connect to calibrator as above.
2: Connect the current to be measured into the BMC ‘Current input’
3: Start the VFP program, select com port as required.
4: Click on current range required.
5: With no input current ‘Null’ the EA008 by clicking the null button.
6: Connect current and turn on.
Note 1: EMC interference and pick up can make low current readings unstable. Great care must be
Taken to screen all leads and connections for stable readings.
Note 2: The BMC outer shell will be earthed if the calibrator is set ‘negative to ground’.
This may cause earth loop errors is the current source is also earthed.