Slow-Control Hardware
There are 2 National Instruments MIO-PCI-6034E DAQ-Cards
currently installed on PC620.
( Full National Instruments Manual for the 6034E DAQ-Card ).
With the Measurement and Automatization Explorer Program they can be configured
and tested.
DAQ-Card1 which reads in the SC-2042 RTD Port is configured in differential
mode (DIFF).
DAQ-Card2 which reads in the wire-terminal port is configured in ground referenced
single-ended mode (RSE).
These DAQ Cards are connected via 2 flatband 64 pin cables to the MuCAP Slow-Box
The slow box contains two terminal ports;
1) The NI SC-2042 RTD port:
National Instruments Manual for the SC-2042 RTD card.
This card is ment to drive temperature dependent resisistors with a 1 micro-amp
current for temperature measurements.
Presently 6 of the differential inputs are selected for temperature measurements
(2-5), input ch0 and ch1 are used for the magnetic field measurement with
Hall-probes. The +5V to drive the Hall-probes are taken from the PC voltage
supply.
2 of the RTD and the 2 Hallprobes are connected via the 3 outside plugs.
There is one spot left for an additional RTD. The way it plugs in is
for a RTD with 3 wires (1 sense wire):
Put the 2 opposite wires from the RTD into IX7+, and IX7- , which is
the current source, put the sense wire in the ch7+ and connect the ch7- with
the IX7-
2) The NI wire-terminal port
The wire terminal port directly connects the input voltage to the DAQ card.
It can read voltages between +- 10 V with the other side connected to the
ground. The mapping of the ports is given as following:
Presently connected are:
ch0: The outpur of the piezo-pressure meter to measure the pressure
/ gas flow in the ePC gas line
ch1: The output of the hydrogen pressure gauge which is taken from
the backside of the digital display. It supplies a pressure related current
which is monitored via a 500 Ohm resistor.
The digital pressure display which serves as power supply and current
monitor for the pressure gauge.
There are 14 channels more to be used.