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Page 28
,
WARNING
Before you connect a voltage source, observe the
following power supply voltage guidelines.
Otherwise, you will void your warranty if the wrong
voltage is applied.
Be sure the voltage source is within the permitted
ranges shown above. Otherwise, your modem and
any attached devices may be damaged.
Customer-supplied cables must be suitable for the
site environmental conditions.
Screw terminals on the power interface accept 24 to
16 AWG. However, surge protection is guaranteed
only if the ground wire is greater than 18 AWG and
if there is a solidly earthed ground connection.
Be sure the power source is not controlled by a wall
switch, which can be inadvertently turned off,
shutting off power to the modem.
Connecting an RS-232 Device
The modem back panel provides a female, 25-pin RS-232 connector
that accepts an attached RS-232 device (see Figure 2-1 on page 10).
This connector accepts a standard connection to a DTE (RTU) that
conforms to the pin assignments shown under “RS-232 (DTE)
Interface” on page 38.