Videx VX2200 Troubleshooting Guide download pdf (Page 40)

PAGE 40 of 68 VX2200 TECHNICAL MANUAL VER1.5

Video monitor (3678)

The 3678 is a wall mount colour

videophone with 3.5” TFT OSD monitor.

Both handset and handsfree (Half duplex)

speech are available along with the facility

to switch into simplex speech mode by

holding the talk/answer button down for

more than 3 seconds. Additional features

include timed privacy, an auxillary outout and LED’s to indicate call

answer, privacy active and door release. An Art.5980 mounting

plate is required for this monitor.

PUSH BUTTONS

Answer button - On an incoming call, operation of this button allows the user to answer and converse with the visitor without

lifting the handset. The LED next to the button will illuminate.

Switch off button - With the system switched on (Call in progress), momentary operation of the button will end the call

(Alternatively, replacing the handset will also end the call). The apartment station will also automatically switch off after a time

delay if the button is not pressed. The LED next to the button will switch off.

Simplex button - Pressing and holding the button for more than 3 seconds will switch the apartment station into SIMPLEX

speech mode. Press and hold the button to speak to the caller (The LED next to the button will flash rapidly), release the

button to listen (The LED will flash slowly). If the button is not pressed for 10 seconds the apartment station will switch off.

The apartment station will revert to duplex speech when another call is made.

Privacy on-off button - Enable/disable the service. The LED next to the button will illuminate when the privacy service is

enabled. Pressing this button while the unit is ringing will reject a call.

During a call, this button acts as a menu button to enter programming mode if pressed momentarily or if pressing until a beep

is omitted, activates the auxiliary output (SB)

Concierge call button – While in standby, press this button to call the concierge (If service is available).

Door open button - During a call, operation of this button will activate the door.

Terminal Signal Description

1 & 2 +20V Video power supply input 17-20Vdc

3 & 4 GND Video power ground connection

5 V2/V Balanced video V2 input or coax centre core (Set by 4 way dip-switches)

6 V1 Balanced video V1 input

7 L Data/speech bus input

8 GND Bus ground

9 LB Local door bell input (Switched to ground to trigger)

10 AL Alarm button input (Switch to ground to trigger)

11 Not Used

12 SB S1 push button (Shorts to Ground when pressed)

13 & 14 Not Used

15 +VD +12Vdc output to power video distribution unit (Art. 894)

16 GND Ground

17 12VO Regulated 12Vdc output

18 12VI +12Vdc power supply input

19 LD Auxiliary LED +12V input (LED next to door open button)

20 GND Ground

PROGRAMMING

Address programming is carried out by setting the internal 8 way dip-switch to the positions shown on the

decimal/binary conversion table of this manual.

The four way dip-switch sets the video signal type accepted by the monitor as shown in the table below:-

4 WAY DIPSWITCH

1 2 3 4 Video Mode

ON OFF ON ON Coaxial video (V2 = V, - = M)

OFF ON ON ON Balance video (V1 & V2)

Note: Switches 3 & 4 are video end of line termination (Both on for end of line termination or both off for no end of line termination

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Videx VX2200 Troubleshooting Guide Page 40

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