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Chapter 7
7.3.3
Remote Operation Thermistor Calibration
Calibration
10µA setting. With the TEC output off, connect the metal film resistor
to 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 appropriate thermistor (10µA or
100µA) 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.
Measure and record the exact resistance of your metal film resistor. Use
nominal values of 20 kΩ for the 100µA setting, and 200 kΩ for the
10µA setting. With the TEC output off, connect the metal film resistor
to the sensor input of the TEC Module.
b.
Enter the TEC:CHAN command to select the channel to be calibrated.
Send TEC:SENS 1 100µA thermistor, or TEC:SENS 2 for the 10µA
thermistor, followed by the TEC:CAL:SEN to enter sensor calibration
mode.
The 6000 will be ready to receive the resistance when, after a
TEC:CAL:SEN? query is sent, a "1" is returned.
c.
Input the actual resistance of the metal film resistor, in kΩ, (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.
81
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