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APPENDIX 1

LED Indications (continued)

The Communication LEDs are Red and Yellow. See Fig 1.

These give an indication of Power-up, Input Learning, NVM Faults, Communi-

cation Progress and Communication Faults.

NVM Fault Indications:

Immediately after power-up or after a Reset, NVM Fault indications may be

given.

LEDS alternate flash - slow. NVM is faulty, or fitted incorrectly.

(Red, yellow, red, yellow ...)

LEDS alternate flash - fast. NVM is the correct type and is working,

(Red, yellow, red, yellow ...) but has been incorrectly programmed, or is

(On & Off 5 times per sec) not programmed at all.

Input Learning Indication:

When the Dualcom is ‘learning’ the quiescent (non-active) state of its inputs,

the Red & Yellow LEDs will flash, 4 Red...4 Yellow...4 Red...etc.

Up/Downloading indications:

LED On + 3 short off-blinks. VDN remote programming of NVM in progress.

Alarm Communication indications:

After being triggered and throughout the communication process the

callprogress may be seen.

LED Off PSTN or VDN path not activated.

LED On solid. Path activated or dialling numbers.

LED On + short off-blinks. Dialling completed, waiting for ‘handshake’

(3 off-blinks per sec) from receiving equipment.

LED rapid flash. Handshake received, sending data to

(On & Off 12 times per sec) receiving equipment.

LED 15 medium flashes. Communications successful. Data

(On & Off 5 times per sec) received correctly at receiving equipment.

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Connect Systems CS1001 Installationshandbuch Seite 38