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Adjustment – ATC-155 A/B
c
Turn the pre-set potentiometer R9 clockwise as far as
possible.
d
Switch the calibrator on using the power control switch.
e
Set the calibrator to –50°C.
f
Connect a voltmeter to CN8.
g
Adjust R9 until the voltage for CN8 reaches
a) 0.45V for PCB marked PCB 991025
b) 0.41V for PCB marked PCB 010125 or the latest PCB.
Adjustment – ATC-140/156/157 A/B
c
Turn the pre-set potentiometer R6/R16 counter clockwise as
far as possible.
d
Switch the calibrator on using the power control switch.
e
Set the calibrator to –50°C.
f
Connect a voltmeter to CN3.
g
Adjust R6 until the voltage for CN3 reaches 0.33V
h
Connect a voltmeter to CN6.
i
Adjust R16 until the voltage for CN6 reaches 0.33V
2.4.2 MVI Circuit for ATC-250/320/650 A/B
Necessary Equipment
Voltage stabilizer with output voltage 230V ±10V (or at 115V ±5V).
Set-up
PCB is adjusted when mounted in the calibrator.
Summary of Contents for JOFRA ATC-125
Page 2: ...2 18 09 2007 122770 06 ...
Page 74: ...74 18 09 2007 122770 06 3 3 Exploded View ATC 140 A B 0 35 1 JRL 03 01 2005 A3 ...
Page 75: ...122770 06 18 09 2007 75 3 4 Exploded View ATC 155 A B ...
Page 76: ...76 18 09 2007 122770 06 3 5 Exploded View ATC 156 A B ...
Page 77: ...122770 06 18 09 2007 77 3 6 Exploded View ATC 157 A B ...
Page 79: ...122770 06 18 09 2007 79 3 8 Exploded View ATC 320 650 A B ...