MKS Baratron 121A, Instruction Manual, Page: 40 / 62

Electrical Connections Chapter Three: Overview
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Electrical Connections
For use of a Type 121 Absolute Pressure Transducer with any equipment other than
complimentary MKS power supply/readout units, consult the manufacturers’ specifications for
connection, and for proper electrical and power characteristics. Refer to Appendix A: Product
Specifications, page 43, for electrical requirements of the Type 121 pressure transducer.
Table 7 lists the pinout of the micro-ribbon connector located on the electronics unit.
Micro-Ribbon Connector Pinout
Pin Number Assignment
1 Chassis Ground
2 DC Common
3 No Connection
4 No Connection
5 +15 VDC
6 -15 VDC
7 DC Output Signal
8 Chassis Ground
9 DC Common
10 No Connection
11 No Connection
12 No Connection
13 No Connection
14 No Connection
Table 7: Micro-Ribbon Connector Pinout
Note
A “No Connection” pin assignment refers to a pin with no internal
connection.