Newport 8000 - Remote Operation ITE Current Calibration, Single Channel TEC Modules

84 Chapter 6 Calibration
a. With the output off, connect a 1 Ω, 50 W resistor and a calibrated
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:
I = V / R
where V is the measured voltage across the resistor, and R is the
measured load resistance. For dual and combination modules, also
connect a 10 kΩ resister across the sensor input.
b.
Go to the single module display by first pressing the
MENU
button,
then the
Modules
soft key, then the slot soft key that corresponds to the
module to be calibrated.
c.
Go to the Calibration Screen. This is done by pressing the
Menu
button,
Config
soft key,
Calibrate
soft key; then the soft key(s) that
correspond to the module to be calibrated.
c. Enter the TEC I
TE
calibration mode by pushing the
I
TE
soft key.
Follow the on-screen instructions to complete the calibration. The
calibration can be canceled without affecting the stored constants if the
Cancel
soft key is pressed at any point prior to completing the
calibration.
6.3.12 Remote Operation I
TE
Current Calibration, Single Channel
TEC Modules
a. With the output off, connect a 1 Ω, 50 W resistor and a calibrated
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:
I = V / R
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 [,suchannel] to
be calibrated. Send
TEC:CAL:ITE
to enter I
TE
calibration mode.
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