Ag Leader Yield Monitor 2000 Operators Manual - Manual (Page 190)

System Wiring
Yield Monitor 2000
Ag Leader Technology
June 1997
7-10
System Wiring Refer to the last page to see a table of all the yield monitor cables and pin-
outs.
Checking Flow
Sensor
Connections To check the flow sensor for electrical connection, use an ohmmeter and
check for the following resistance’s (readings can be 1-3 ohms off and still
be good readings):
Check at: Pins Ohms
Cab Cable (rectangular 25 pin conn.) 9 + 21 350
Cab Cable (rectangular 25 pin conn.) 8 + 22 375
Distribution Cable (large round 24 pin conn.) 8 + 19 350
Distribution Cable (large round 24 pin conn.) 7 + 20 375
Flow Sensor Ext. Cable (round 9 pin conn.) 2 + 3 350
Flow Sensor Ext. Cable (round 9 pin conn.) 1 + 4 375
Flow Sensor Cable (round 9 pin conn.) 2 + 3 350
Flow Sensor Cable (round 9 pin conn.) 1 + 4 375
Pin-Out of 9-pin Pin Signal
Serial Port on 2 RS-232 Transmit (from monitor)
bottom of Monitor 3 RS-232 Receive (into monitor)
5 RS-232 Ground
The following connections exist only on Monitors with S.N.’s above 941000
1 Regulated 5 volts (limit current draw to 50 ma)
4 12 Volt Power (unswitched, reverse polarity
protected, limit current draw to 1
amp)
6 Ground
7 Second RS-232 Transmit (not in use)
8 Second RS-232 Receive (not in use)
9 Auxiliary A/D Input (keep input voltage between
ground and 5 volts)