ND-20292
CHAPTER 2
APRIL, 1990
240.6 OPTIONAL INTERFACE ETUs
A. CNF-E ETU
The CNF-E ETU contains a switch (SW11 and an LED
(LEDl).
SW1 is used to busy out the ETU when the ETU is
removed or inserted without powering down the CCU.
SW1 is used to busy out the ETU when the ETU is
removed or inserted without powering down the CCU.
LED1 (Green) lit, indicates the CNF-E ETU is
receiving power.
LED1 (Green) lit, indicates that the VMI-E ETU is
receiving power.
LEDs 101-401 (Red) lit, indicate the status of the four
circuits. Each LED ON indicates its associated circuit
is in use.
A maximum of four CNF-E ETUs can be installed in a
system, into any interface slots.
B. ECR-E ETU
The ECR-E ETU contains two switches (SW1 and
SW21, an LED, a volume control (VOLl), three RCA
phono plugs (JKl, JK2, JK3) and two screw terminal
blocks (CNl and CN2).
One VMI-E ETU can be installed in a system, into any
interface slot. The VMI-E ETU requires the support of
an RSG-E Unit and may also require the support of an
MFR-EA ETU.
SW1 is used to busy out the ETU when the ETU is
removed or inserted without powering down the CCU.
NOTE:
If the Electra Mark11 System is installed with
a CPU-EC4 (or higher revision level) ETU,
two VMI-E ETUs may be installed in the
system.
SW2 is used to select the ring pattern of the external
tone ring output.
240.7 SMDR-E ETU
The SMDR-E ETU contains three switches, an LED
and an RS-232C connector ended cable.
LED1 (Green) lit, indicates the ECR-E ETU is 1. Switch 2, designated SW2 RESET, is a slide
receiving power. Phono plug JK2 is an input jack for a switch used to reset the SMDR-E ETU, with
BGM source, and JK3 is for input of a second BGM interruption of all ongoing operation. This switch
source, or as an input for a Delay Announcement Unit is also used to busy out the ETU when it is
when the system is installed with a CPU-EB3 ETU or removed or inserted without powering down the
CPU-EC3 ETU. ecu.
If the Electra Mark11 System is installed with a CPU-
EC4 (or higher revision level) ETU, JK2 is used for an
input jack for a BGM source or as an input for a Delay
Announcement unit (First Announcement). JK3 is
used for an input of a second BGM source, or as an
input for a (Second Announcement) Delay
Announcement unit.
NOTE:
If only one Delay Announcement is assigned,
JK2 is used as the input jack.
VOLl is used to adjust the audible level of the external
tone ringer output. JKl provides an uninterrupted
ring tone.
ON
OFF II
od
DI 1
LPO
;rF*i On Off
1\7/[
RS232C
For installing options, see Section 270, Optional
Equipment Connection.
One ECR-E ETU can be installed in a system, into any
interface slot.
C. VMI-E ETU
The VMI-E ETU contains a switch (SW11 and five
LEDs (LEDl, LEDlOl-401).
Figure 200-24 SMDR-E ETU Switch Layout
Switch 1, designated SW1 ON-OFF, is used to
connect the backup battery to the SMDR-E ETUs
memory. This switch should be set to the ON
position to allow memory retention, during power
failure or brownouts, for approximately seven
days.
Switch DIP1 is a 5 position DIP switch which is
used to select a baud rate (300 - 4800).
,,
3
200 - 28