Fairbanks H90-5200-A Digital Instrument - Manual (Page 40)

6. Install the four hex spacers on the four weld-studs in the bottom of the
instrument.
7. Place the accessory PC Board on the weld-studs. The 24 pin connector
should be toward the center of the instrument.
8. Install the four nuts on top of the weld-studs to hold the PC Board in place.
9. Connect the 24 pin ribbon cable from the accessory PC Board to J4 on
the main PC Board.
NOTE: Pin 1 on the cable must go to pin 1 on the accessory board and on the
instrument or damage will result. Make sure the cable exits towards
the center of the main PCB.
10. Connect the Accessory output cable from the 9 pin connector to J1 on the
I/O Accessory.
11. On the I/O Output board, set the slide switches at SW1 for the output
desired. If the I/O Accessory is installed,the following switch settings on SW1
must be made to operate various pieces of equipment.
ACC 146 Settings ( channel 2 )
Switch
Device 1 2 3 4 5 6 7 8 Remarks
Printer1 1 0 1 0 1 0 0 1 50-3925, PTR-3950, 50-3921
RS-232 1 0 1 0 0 1 0 1 Citizens, 50-3960, 50-3715
Computer
RS-232
1 0 1 0 0 1 0 1
ACC 146 Settings ( channel 2 )
Remote Display or
Computer 0 0 1 1 0 0 0 1
Current Loop
Computer
RS-485
0 0 1 0 0 0 0 1
ACC 147
0=OFF 1=ON
Accessory Switch Configuration Chart
50515 40 Issue #2 4/04