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Chapter 7
7.3.4
Local Operation AD590 Sensor Calibration
7.3.5
Remote Operation AD590 Sensor Calibration
Calibration
a.
With the TEC output off, connect a precision 16 kΩ metal film resistor
and a precision ammeter in series at the sensor input of the TEC
Module.
b.
Go to the single module display by first pressing the MENU button,
then the Modules soft key, then the TEC module soft key.
c.
Press the Setup soft key and select the AD590 as the Sensor Type.
d.
Go to the calibration display by first pressing the MENU button, then
the Config soft key, then the Cal soft key, then the channel to be
calibrated. At the calibration screen, press the Sensor soft key. Follow
the on-screen instructions to complete the calibration. The calibration
can be terminated without affecting the stored constants if the Term
soft key is pressed at any point prior to completing the calibration.
a.
With the TEC output off, connect a precision 16 kΩ metal film resistor
and a precision ammeter in series at the sensor input of the TEC
Module.
b.
Enter the TEC:CHAN command to select the channel to be calibrated.
Enter the TEC:SEN 4 and TEC:CAL:SEN to select the AD590 sensor
and enter sensor calibration mode.
The 6000 will be ready to receive the current value when, after a
TEC:CAL:SEN? query is sent, the response from the 6000 is "1".
c.
Input the actual current measured, in µA, by the external ammeter (as
an <nrf value>) via the TEC:R <nrf value> command.
If, at any time prior to TEC:R, a command other than TEC:R or
TEC:R? is sent to the 6000, the 6000 will cancel the calibration mode
and then process the command(s).
Once the TEC:R value is sent, the OPC? query may be used to
determine when the calibration is completed. The operation complete
flag (bit 0 of the Standard Event Status Register) may be used to trigger
an interrupt. This type of interrupt is enabled by setting bit 0 of the
Service Request Enable register and using the *OPC command.
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