Remote Operation Ite Current Calibration, Single Channel Tec - Newport 6000 Operation And Maintenance Manual

86 Chapter 7
7.3.12 Remote Operation I
TEC
Calibration
TE
With the output off, connect a 1 Ω, 50 W resistor and a calibrated
a.
ammeter in series across the laser output terminals. If an ammeter with
the appropriate current ratings is unavailable, connect a 1 Ω, 50 W
resistor across the laser output terminals and use a calibrated DMM to
measure the voltage across the resistor. Calculate the current in the
following steps by using Ohm's Law:
where V is the measured voltage across the resistor, and R is the
measured load resistance.
b.
Enter the TEC:CHAN command to select the channel to be calibrated.
Send TEC:CAL:ITE to enter I
The module will be placed in I
plus 100 mA, and the I
The 6000 will be ready to receive the first measured current value
when, after a TEC:CAL:ITE? query is sent, a "1" is returned.
c. Input the actual current (as an <nrf value>) via the TEC:ITE <nrf
value> command. The 6000 will then drive the current to 25% of the
initial set point.
The 6000 will be ready to receive the second measured current value
when, after a TEC:CAL:ITE? query is sent, a "1" is returned.
d. Input the second actual current (as an <nrf value>) via the TEC:ITE
<nrf value> command. The 6000 will then drive the current to the
negative current value of the initial set point.
The 6000 will be ready to receive the third measured current value
when, after a TEC:CAL:ITE? query is sent, a "1" is returned.
e. Input the third actual current (as an <nrf value>) via the TEC:ITE <nrf
value> command. The 6000 will then drive the current to 25% of the
negative current value of the initial set point.
The 6000 will be ready to receive the fourth measured current value
when, after a TEC:CAL:ITE? query is sent, a "1" is returned.
Current Calibration, Single Channel
I = V / R
calibration mode.
TE
mode, limit set to 50% of full scale
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set point set to 50% of full scale.
TE