NEC nd-20292 manual SMDR-E ETU Switch Layout

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.

LED1 (Green) lit, indicates the CNF-E ETU is receiving power.

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).

SW1 is used to busy out the ETU when the ETU is removed or inserted without powering down the CCU.

SW2 is used to select the ring pattern of the external tone ring output.

LED1 (Green) lit, indicates the ECR-E ETU is receiving power. Phono plug JK2 is an input jack for a BGM source, and JK3 is for input of a second BGM source, or as an input for a Delay Announcement Unit when the system is installed with a CPU-EB3 ETU or CPU-EC3 ETU.

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.

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).

SW1 is used to busy out the ETU when the ETU is removed or inserted without powering down the CCU.

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.

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.

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.

240.7SMDR-E ETU

The SMDR-E ETU contains three switches, an LED and an RS-232C connector ended cable.

1.Switch 2, designated SW2 RESET, is a slide switch used to reset the SMDR-E ETU, with interruption of all ongoing operation. This switch is also used to busy out the ETU when it is removed or inserted without powering down the ecu.

ON

OFF II

DI 1

LPO

od

;rF*i On Off

1\7/[

RS232C

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).

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