Honeywell Thor VM2 User Manual page 86

User-Supplied Cable
A user-supplied cable can be used as well. Pins 7 and 8 must be connected as detailed below. No other pins
are to be connected.
PIN 5
PIN 8
DB9 Female
1 -6, 9
7 (RTS)
8 (CTS)
The user-supplied cable is installed as follows:
1. Connect the wire from Pin 8 of the cable to the switched side of the Screen Blanking Box or to a user-sup-
plied switch.
2. Connect the wire from Pin 7 of the cable to the unswitched side of the Screen Blanking Box or to a user-
supplied switch.
3. Connect the D9 serial connector to either COM1 or COM2 serial port on the Thor VM2 dock.
Screen Blanking Box
Screen Blanking
Box Terminal
12-xxV
GND
Unswitched
It is assumed that the motion sensing circuitry in the illustrations below is powered by internal vehicle circuitry.
Please refer to the appropriate illustration below for Screen Blanking Box wiring diagrams.
CAUTION - Do not exceed the maximum input voltage, either 60 or 72VDC, specified on the Screen Blanking
Box label when using this configuration.
4 - 36
PIN 1
PIN 7
Function with Screen Blanking Box
Not Used
Connected to Screen Blanking Box, unswitched side
Connected to Screen Blanking Box, switched side
Connection
Input from vehicle motion sensing circuitry.
Please refer to label on Screen Blanking Box for allowable voltage input range.
DC -
These two terminals are for connecting a serial cable:
• If using an optional Honeywell screen blanking cable, VM1080CABLE, connect the
gray wire to the switched side of the connection and connect the black wire to the
unswitched side.
Switched
• If using a user-supplied cable, the cable must be constructed so that Pin 7 (RTS)
connects to switched side of the connection and Pin 8 (CTS) connects to the
unswitched side.
Function with Switch
Not Used
Connected to Switch
Connected to Switch