user manual

ET1 NUMBER: MK-012
DATE: DECEMBER 1988
4.
REFERENCES
4.1 AEC’s, model 212 Plus, owner’s manual.
4.2 Electra MarkII Installation Service Manual.
5.
OPERATION
The first DIT/ANA caller who encounters a busy or no answer condition within a pre-
programmed amount of time will receive a prerecorded message from the beginning. This
announcement will repeat until the call is answered or abandoned.
Subsequent callers
may be connected to the Delay Announcer at any time while the message is in progress
and may not get the complete message until it repeats again. Therefore, keeping the
message short will minimize confusion.
6.
PROCEDURE
3.7 Length of a-pair station cable long enough to reach from the ECR-E ETU card to the
RJ-31X modular jack, located near the AEC, model 212 Plus.
NOTE
Ensure that antistatic handlin
observed when handling the E
8
precautions are
R-E ETU.
6.1 Wiring connections to the ECR-E ETU. (Refer to Figure 1)
6.1.1 Remove approximately 3 inches of outer insulation from both ends of the 4
conductor cable and strip off + inch of insulation from each of the four
wires.
6.1.2
Choose a relay to be used (4 - 10) for Delay Announce. Use of relay 10 is
recommended. Figure 1 shows the use of relay 10.
6.1.3
Connect one lead from the 4-conductor cable to the A side of the relay
chosen. (Connections for relays 04 - 06 are found on the MDF and
connections for relays 07 - 10 are found on the CNl terminal strip on the
ECR-E ETU.)
6.1.4 Connect a second lead from the 4-conductor cable to the B side of the relay
chosen.
6.15
Connect a third lead from the 4-conductor cable to the center terminal of
an RCA plug.
6.1.6
Connect the fourth lead from the 4-conductor cable to the ground side of the
RCA plug.
6.1.7 Insert the RCA plug into JK3 of the ECR-E ETU.
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