Power And Control Connections - Thermo Scientific V.22/212A User Manual

2.2.1 Power and Control Connections

The V.22/212A Modem requires 5 to 15 Vdc for operation. Power can be wired to the power
connector J5 or through the RS-232 connector J4. Refer to Exhibit 2-2.
When using the power connector J5, wire the positive lead to J5-1 and the negative lead to J5-2.
Configuration Jumper J7, located between the power connector and the RS-232 connector, is not
necessary and can be removed.
When routing power through the RS-232 connector J4, wire the positive lead to J4-9 (PTV) and the
negative lead to J4-7 (SG). Configuration Jumper J7 must be installed for this mode of operation.
Exhibit 2-2: Power Connection Options
WARNING:
CONNECT THE MODEM GROUND TERMINAL (E1) TO
THE CLOSEST COMMON EARTH GROUND
CONNECTION OF THE INSTALLATION BEFORE
MAKING ANY OTHER CONNECTIONS TO THE
MODEM.
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