ELECTRONIC STATION CONTROLS AND INDICATORS (cont)
TEMPERATURE CONTROLLER UNIT 1A1 (cont)
Control or Indicator
DATA ENTRY Switch
INTERNAL TEMP POLARITY
Two-position illuminated switch changes position each
A clear plastic switch guard prevents
Lower PANEL section lit (green) - allows operator
access to controller by use of front panel switches.
Upper COMPUTER section lit (red) - computer has control.
Both sections lit - computer has control and is waiting
for operator action.
Enters data from other switches into controller.
in setting will not be entered until switch is pressed.
Indicates emitter A is stabilized to within 0.02°C of
its final temperature.
ABSOLUTE - selects absolute temperature as set by
TEMPERATURE SET switch.
DIFFERENTIAL - emitter
between temperature of
entered by EMITTER A
LED lights to indicate
front panel DATA ENTRY
A temperature is an offset
external sensor and temperature
TEMPERATURE SET switches.
temperature selection entered by
switch or computer command.
Up (+) position - emitter A is hotter than ambient sen-
sor by temperature entered in EMITTER A
Down (-) position - emitter A cooler than ambient sensor
by temperature entered in EMITTER A
LED lights to indicate TEMP POLARITY entered by front
panel DATA ENTRY switch or computer command.