Microtel Series 500 - Manual (Page 24)

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III.F.4. 4 Channel Digital Output Card
Each Digital Output Option card provides four SPDT 5 amp relays for controlling
external devices and loads. Using telephone tone commands discussed later in this
reference, each channel may be turned on or turned off. Additionally, the mode of each
relay may be set to a latched or momentary configuration. If a channel is configured as
a momentary mode, it will remain on for a programmable period of time when activated
with the tone command. Relays may also be controlled from the System front panel.
The output for each channel is comprised of the relay common and either the normally
open (N/O) or normally closed (N/C) relay terminal. The choice of normally open or
normally closed output is selectable using the jumper plugs provided for each channel.
III.F.5.
Printer Output Card
Although the Printer Output Card can reside in any of the I/O card slots in the MCS 500
Dialer, it is recommended that it be installed in the fifth, or right-most position. The card
has a 26 pin array of connector pins which must interface to a DB-25 jack on the outside
of the system enclosure. A printer cable assembly is used to connect to the pins on the
card to the DB-25 jack assembly, which is mounted over one of the conduit holes on the
bottom side of the dialer enclosure. When connecting the printer cable assembly to the
Printer Option Card, be sure to observe the correct pin 1 polarity of the plug and jack
combination.
The following diagram details the installation of the Printer Output Card: