General Purpose I/O - Honeywell SAT-IDP Series User Manual

OD_OUT A single open drain output (250mA max sink current). Suitable for driving relays,
indicators etc.
I/On Five general purpose inputs/outputs individually configurable as:

High voltage digital input (15-32V maximum) with optional falling edge interrupt capability

Switch input (internal pull up used with external switch to ground) with optional falling edge
interrupt capability

Digital input (0-15V maximum) with optional falling edge interrupt capability

Analogue input (12 bit ADC, 0 to 3.3V)

Low voltage digital output (3.3V)
Note on USB to RS-232 Converters
Honeywell Global Tracking recommends the FTDI chipset USB to serial converters for use with the SAT-IDP
terminal and the terminal programming utility software.

7.3 General Purpose I/O

Figure 8 shows a conceptual drawing of one of the general purpose I/O's.
Switch input pull up
High voltage Digital in
Digital in falling edge interrupt
High voltage Digital in falling edge interrupt
Note that the pull up is only available if the multi way switch is in positions 1 or 4.
MAN-0077
Digital in
Digital out
Analogue in
Figure 8 – SAT-IDP general purpose Input block diagram
Honeywell Global Tracking Ltd
3k9 Ohms
10k Ohms
I/On
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