Offset/Gain Setting Of The G4F-Ad2A - LG G3F-AD4A User Manual

Chapter 2. SPECIFICATIONS

(2) Offset/Gain Setting of the G4F-AD2A

a) Offset/gain Setting Procedure
Set offset / gain values for each channel.
Set the channel select switch for test mode to channel 0.
: RUN LED flickering per 1sec
Write a program for the A/D conversion module to the memory of the
CPU module. Operate the CPU module.
Apply offset voltage (or current) to input terminal of channel 0.
Adjust the offset switch to the upward direction so that an offset value
: Adjustment of the offset trimmer upward makes RUN LED on.
Apply gain voltage (or current) to input terminal of channel 0.
Adjust the gain switch to the upward direction so that a gain value
: Adjustment of the gain trimmer upward makes RUN LED on
: Set the channel selects switch to one of channels 4 to F.
REMARK
(1) Set offset/gain value within practical input range.
(2) Offset/gain value is stored in the G4F-AD2A and remains after power-off.
(3) Set offset/gain value to the range of from-10 to 10 volts DC or from –20 to 20 mA.
However, if this range is exceeded, the resolution and accuracy will be impaired.
(4) At the change of grounding position in the *5 of 3.2.2, be sure to restart offset/gain value from the beginning
corresponding to the channel 0 can be set.
corresponding to the channel 0 can be set.
Setting has completed for all used channels 0 to 3.
Offset/gain micro adjustment has completed
(Normal Mode state)
2 - 23
Test mode
After making used
channel program,
operate the CPU module.
Offset value adjustment
Gain value adjustment