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19
JUN 2020
USER GUIDE
3 INTEGRATED MAIL OPERATING SYSTEM (IMOS) DS-200iQ / DS-600iQ
REV 00
3.2.3.1 DIAGNOSTICS
Diagnostics allows the Supervisor to access analog sensor calibration.
Analog sensors are those that respond over a graduated range, unlike digital sensors
which are read as either On or Off.
1. To adjust the analog sensors, select ‘ Diagnostics ’ from the list of services, then
select the ‘ Analog sensors ’ tab at the top of the diagnostics screen.
2. Select the required unit needing sensor calibration, and press ‘ Ok ’ once
complete as shown in Figure 3.14.
QTL-RND-SCR-00000114-A-00
Figure 3.14 – Selecting a unit for sensor calibration
3. Analog sensors can be calibrated individually or together by pressing the ‘ Cal
All (Paper sensors) ’ button in the bottom right corner of the screen.
4. Press ‘ Exit ’ once the desired settings have been made.
TYPICAL SENSOR VALUES
Generally, readings are best used as a comparison guide for like sensors from one
machine to another, however, if a sensor has failed, the readings are likely to be very
low or zero.
Figure 3.15 shows an example of a typical analog sensor value, and translates as
follows:
▪ ‘ T ’ = Threshold voltage, generally over 2.5V (this is the switching voltage
between blocked and clear)
▪ ‘ I ’ = Effort of current required to read across the sensor halves (typically
between 10% and 60%)
▪ ‘ R ’ = Percentage of pot value on PCB (‘ C ’ = clear, ‘ B ’ = blocked) and sensor
voltage (typically <0.5V for clear, >4.5V for blocked)
QTL-RND-SCR-00000174-A-00
Figure 3.15 – Example of a typical analog sensor value