80235A (OBMS), M1370A (ODIS), and OB TraceVue
Chapter 10 Peripherals 117
80235A (OBMS), M1370A (ODIS), and OB TraceVue

Table 10-6 lists the signals at each pin.

Figure 10-9OBMS and ODIS Pin Connections

Table 10-6OBMS a nd ODIS Pin Connections

Pin Signal Details

1 HR2 Output 1V/100bpm ±40mV (0V if not valid).
Rout: 100Ω.
2Not connected.
3 RS422 Output + Digital Serial Output.
1200 baud, 8 bit, no parity.
4 Toco Status Output Toco External Mode or No Toco Mode (L).
IUP Mode (H).
Rout: 1.1kΩ, 100nF.
5HR1
valid Output When heart rate is valid, output is high.
Rout:1.1kΩ, 100nF.
6Not connected.
7Not connected.
8RS232 RxD Digital Serial Input.
RS232, 1200 Bd., 8 bit. no parity.
9 RS232 TxD Digital Serial Output.
RS232, 1200 Bd., 8 bit, no parity.
10 Not connected.
11 HR1 Mode Output US: 0.6V, AECG: 5V, DECG: 6.7V, INOP: 8.5V.
Rout: 38KΩ.
12 Ground Analog Signal Ground.
13 Toco Output 1V/10 Toco units ±100mV.
Rout: 100Ω.
14 HR2 Mode Output US: 0.6V, AECG: 5V, DECG: 6.7V, INOP: 8.5V.
Rout: 38KΩ.