Teledyne API Model 401 O
3
Photometric Calibrator Instruction Manual, 01124, Rev. J1
2.2.3 Status LEDs
The three status LEDs to the right of the display indicate the general status of the Model 401
Photometric Calibrator. The green SAMPLE LED indicates the sampling status. The yellow
CAL LED indicates the calibration status. The red FAULT LED indicates the fault status. Table
2-5 summarizes the meanings of the status LEDs.
Table 2-5:
Status LEDs
LED
State
Meaning
Green
Off
On
Not monitoring (should never be off)
Monitoring normally
(STBY/ZERO/O
3
GN/ASEQ MODE)
Yellow
Off
On
Blinking
Auto cal. disabled
Auto cal. enabled
Calibrating
Red Off
Blinking
No warnings exist
Warnings exist
2-9
