Wavelength Electronics LFI-3751, User Manual

Page: 110 / 132

Chapter 4 - Remote Interface Reference
Calibration - Sensor Bias Current and AD590 Sense Resistance
Calibration - Sensor Bias Current and AD590
Sense Resistance
110
•
All sensor bias currents and the AD590 sense resistance are calibrated
at the factory. To change these calibrated values, you must fi rst send
the
[PASSWORD] command. You should not use these commands
without direct supervision from Wavelength Electronics Technical Support
Group.
Write
!101254????????(FCS)
( [PASSWORD] )
Calibrating the 10
µ
A Reference Current
•
If the instrument’s 10
µ
A reference current is actually 9.89
µ
A, send the
following Command Packet to properly calibrate the unit.
Write
!009.89029
( [10
µ
A BIAS CAL] in
µ
A )
Calibrating the 100
µ
A Reference Current
•
If the instrument’s 100
µ
A reference current is actually 99.5
µ
A, send the
following Command Packet to properly calibrate the unit.
Write
!099.50027
( [100
µ
A BIAS CAL] in
µ
A )
Calibrating the 1 mA Reference Current
•
If the instrument’s 1 mA reference current is actually 1.005 mA, send the
following Command Packet to properly calibrate the unit.
Write
!001.00527
( [1 mA BIAS CAL] in mA)
RS-232
Commands Discussed:
[PASSWORD]
[10
µ
A BIAS CAL]
[100
µ
A BIAS CAL]
[1 mA BIAS CAL]