BARTINGTON INSTRUMENTS
Page 7 of 21 OM3224/4
6. CU1 Control Unit Installation
6.1. Test Assembly Location and Ventilation Requirements
The CU1 has no forced ventilation requirements and can be sited typically on top of the PA1. The
CU1 and PA1 should be located at least 3m from the Helmholtz Coils to avoid interferences.
Note:
For optimum results, the ambient temperature should not exceed the maximum
specified in the data sheet.
6.2. CU1 Control Unit Connection to the PA1 Power Amplifier
6.2.1. Current Control Output
Connect the CU1 Current Control Output [1] to the PA1 Current Control Input using the cable
provided. Labels on the cable identify each end of the cable.
6.2.2. Current Monitor Input
Connect the Current Monitor Input [4] to the PA1 Current Monitor Output using the cable
provided. Labels on the cable identify each end of the cable.
The Current Monitor signal is sent to the National Instruments card for digitisation and is
available in the Helmholtz Coil Control Software.
6.3. Sensor Connection to CU1 Control Unit Device Under Test Input
Both single-ended and differential output sensors can be connected to the Device Under Test
input. The supply voltage to the sensor can be set by the user. Both the selection of the sensor
output type and the supply voltage can be set through the software and is controlled via one of
the digital I/O line on the National Instruments card.
The Device Under Test output is sent to the National Instruments card for digitisation and is
available in the Helmholtz Coil Control Software.
Refer to the datasheet DS2613 for details of the supply voltage limits, and the analogue input
range.
Ensure to not apply a supply voltage exceeding the connected sensor’s rating.
An extension cable to connect to the sensor’s cable to the CU1 Device Under Test port is supplied
with the CU1. This is to be used in case the sensor cable is not long enough.
Note:
Bartington Instruments can supply suitable cables for all Bartington Instruments
compatible magnetic field sensors.
