Metrohm 762 IC Interface Instructions For Use Manual page 34

4 Appendix
FIFO
Pin assignment
Remote interface (Events)
Output lines
Input lines
Analog signal interface
Function
Connector
Input voltage range
Input amplification
Sampling rate
Resolution
Noise
30
0...16 Bytes (for Dev. 8 not available)
Pin 2: RxD (Received Data) for Dev. 1...4
Pin 3: TxD (Transmitted Data) for Dev. 1...4
Pin 5: GND (Signal Ground) for Dev. 1...4
Pin 7: TxD (Transmitted Data) for Dev. 5...8
Pin 8: RxD (Received Data) for Dev. 5...8
Pin 9: GND (Signal Ground) for Dev. 5...8
7 potential-free relay contacts per system for
controlling external instruments.
RUN
Maximum contact load:
30 V / 1 A DC
COM
1 digital input per system for external method
start.
+5V
470k
Maximum load for external contact:
approx. 0.1 mA at max. cut-off voltage of approx.
5 V
2 potential-free analog signal inputs per system.
Dsub connector 9 pin (female)
5 1
9 6
± 2.5 V
1, 2, 4, 8, 16, 32, 64 (selectable)
10, 20, 30, 50, 60 measuring points/s
24 bit (1 LSP = 0.298 µV at amplification 1)
< 20 µVpp
< 3 µVrms (at 0 V input voltage, amplification 1
and sampling rate 10 Hz)
47k
RUN
Ext. Start
COM
762 IC Interface