5.4.9 The Private\Display A/D Status Screen
Private..Display A/D
+12V ddddd
+3.3V ddddd
+5V ddddd
CARSPR: ddddd
CRTPRS: ddddd
I/O CLEAR: ddddd
I/O FULL: ddddd
Internal 0: ddddd
Internal Mid:ddddd
InternalFull:ddddd
TPWR: ddddd
YCLEAR: ddddd
YCLEARM: ddddd
The Display A/D Status screen displays the current analog to digital converter output
values. There are up to fourteen A/D channels (depending on the revision of the Ex-
ecutive PCBA) that constantly measure the Handler power supplies, Opto-Sensors
and other signals. The signal names generally correspond to those found on the Ex-
ecutive PCBA schematic diagram (drawing no. 501388). The signals for the various
Executive PCBA revisions are shown in Table 5-2 below.
The A/D converter is an 8-bit unit. Output values range from 0 to 255. These output
values correspond to input voltages ranging from 0 to 5.000 VDC, which equates to an
input voltage at U1 on the Executive PCBA of 19.61 millivolts per count.
Input Signals
Description
+12V
The Handler Power 12V Output
+3.3V
The Executive PCBA +3.3V Regulator Output
+5V
The Executive PCBA +5V Regulator Output
CARSPR
Not used on this model library.
CRTPRS
Cartridge Presence Opto-Sensor Output
Lower readings indicate a cartridge is present
in Millivolts
I/O CLEAR
I/O Port M-Clear Opto-Sensor
in Millivolts
I/O FULL
I/O Port M-Full Opto-Sensor
in Millivolts
Internal 0
A/D Converter Internal Check Channel
Should always indicate a value of 2502
Internal Mid
A/D Converter Internal Check Channel
Should indicate a value of 2502
InternalFull
A/D Converter Internal Check Channel
Should indicate a value of 5000
TPWR
Term Power voltage
YCLEAR
Y-Clear (Inventory Sentry Beam) Opto-Sensor
in Millivolts
YCLEARM
Y-Clear m (Inventory Sentry Beam) Opto-Sensor
in Millivolts
5-16
The Private Menu
501380 Rev. B
