Martel Electronics MasterCAL - Manual (Page 92)

MasterCAL
Users Manual
82
Transmitter Mode
You can set up the calibrator so that a varying input
(MEASURE) controls the output (SOURCE), like a
transmitter. This is called “Transmitter mode.” In
Transmitter mode, the calibrator can be temporarily
used as a substitute for a defective or suspect
transmitter.
w Warning
Do not use Transmitter mode in any
environment that requires intrinsic safe
equipment and practices.
Caution
Transmitter mode is for diagnostic
purposes only. Use a fresh battery. Do
not use the calibrator in place of a
transmitter for extended periods.
To set up the calibrator to emulate a transmitter,
proceed as follows:
1. Disconnect the control bus wires from the
transmitter output (loop current or dc V control
signal).
2. Connect test leads from the appropriate
calibrator SOURCE jacks to the control wires in
place of the transmitter.
3. Disconnect the process input (e.g.,
thermocouple) from the transmitter.
4. Connect the process input to the appropriate
calibrator MEASURE jacks or input connector.
5. If necessary, press M for MEASURE mode.
6. Press the appropriate function key for the
process input.