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L4451A and L4452A Calibration Procedures A
L4400 User’s Guide 261
L4452A Multifunction Module
Verification and calibration of the L4452A Multifunction Module is
limited to channels 6 and 7 which are the DAC (voltage) output channels.
L4452A Verification
The test connection for verifying the DAC output voltage on channels 6
and 7 of the L4452A are shown in Figure A- 3.
Figure A-3. L4452A DAC Output Connections (Channels 6 and 7).
DAC Output Verification Test
This procedure is used to check the calibration of the DAC outputs on
channels 6 and 7 of the L4452A. Verification checks are performed only
for those output values with unique calibration constants.
1 With the DMM disconnected from the L4452A, set the DMM to the
100V range or the lowest range that can measure 16V (do not use
autorange).
2 Short the inputs to the DMM. The DMM reading is the offset voltage
for the selected range. If the DMM has “null” capability, turn it on at
HI
I
DMM
L4452A Terminal Block
LO
twist wires
HI
LO