Bio-Rad Econo Gradient Pump Kits - Manual (Page 45)

APPENDIX B
CONNECTION TO OTHER INSTRUMENTS
The I/O connector on the rear panel of the pump is for the operation
of the fraction collectors and chart recorder (see Figure 3-2). Output
signals are TTL compatible. To use these signals for non-Bio-Rad
devices, you must insure that the circuit external to the Econo
Gradient Pump does not draw more than 15 milliamperes of current.
The following table describes the rear panel mini-DIN connector
pinouts for this I/O connector.
Table B-1. I/O mini-DIN Connector Pinouts
Selected Fraction Collector
Pin# Name None 2110 2128
1 PS held HIGH held HIGH held HIGH
starts 1327 starts 1327 starts 1327
2 RUN --- 2.5 s held LOW
LOW PULSE starts 2128
resets 2110
3 FCNTRL1 held LOW held LOW held LOW
starts EGP starts EGP starts EGP
program program program
4 START --- 120 ms LOW held LOW
PULSE starts 2128
toggles between
start and stop
Other Instruments
41
PIN #7
PIN #8
PIN #5
PIN #2
PIN #4
PIN #6
PIN #3
PIN #1
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