MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
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4-10. Commands
GAIN
SET GAIN: This command sets the gain of a channel.
Setting
:
The amplifier gain can be set directly by sending a Gain command:
1:0:GAIN=100.2\r\n
(unit 1,all channels gain set to 100.2)
When a channels gain is set directly the unit will adjust the FSI parameter of the gain equation using the
following equation; FSI = (((FSO*1000)/Gain)/Sens) to ensure it remains valid.
Setting Response: 1:GAIN:ok
Query
:
The Gain query returns all of the parameters used to determine it in a single response
Query Format: Unit#:Ch#:CMD?
Response format: Unit#:Cmd:Ch#:=Gain:SENS:FSO:FSI;
Query: 1:5:GAIN?
Response: 1:GAIN:5= 5.0: 10.0: 10.0: 200.0;
Global Query: 1:0:GAIN?
Global Response:
1:GAIN:1
= 5.0: 10.0: 10.0: 200.0;
2
= 5.0: 10.0: 10.0: 200.0;
3
= 5.0: 10.0:
10.0: 200.0;
4
= 5.0: 10.0: 10.0: 200.0;
SENS
The SENS command provides a mechanism to have the transducer Sensitivity influence the Gain setting of the channel.
Channel Gain is calculated using the equation;
Gain = FSO*1000/(FSI*SENS). If a Sensitivity is entered that caused the gain to exceed the amplifiers capability the
FSI component will be adjusted to keep the equation valid.
Setting
:
1:0:SENS=20.2\r\n
(unit 1,all channels transducer sensitivity set to 20.2)
Setting Response: 1:SENS:ok
Query
:
The Sens query returns the channels transducer sensitivity
Query Format: Unit#:Ch#:CMD?
Response format: Unit#:Cmd:Ch#:= SENS;
Query: 1:1:SENS?
Response: 1:SENS:1= 6.0;
Global Query: 1:0:SENS?
Global Response: 1:SENS:
1
= 6.0;
2
= 10.0;
3
= 10.0;
4
= 10.0;
FSCI
The FSCI command provides a scaling mechanism to automatically set the gain based on a known input level (in EU)
and what output level (in Volts) you would like that Full Scale input level to be represented by. For instance 1000g’s =
