Alpha Communications TekTone Tek-View VM104 Installationsanleitung Handbuch - Seite 5

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Video Monitor (VM104):

A. Connect all necessary wires as shown in the connecting

diagram (Figure 5). Refer to Figure 6 for dual entrance

wiring. IH357 and IH358 housings include four knock-

out holes for cable inlet.

B. Mount the VM104 to the IH357 and IH358 ring housing

using the adapter plate.

Transformer (SS250):

A. Connect transformer 16 volt terminals to PK314A, termi-

nals T1 and T2. Connect transformer primary to 117

VAC observing all applicable electrical codes.

SYSTEM CHECK-OUT

Check entire system according to the operating instructions,

turning each monitor on individually so that if a problem

exists it may be easily identified. If the system does not

operate as indicated, refer to Troubleshooting section.

OPERATING INSTRUCTIONS

Entrance Panel (VM320B, VM600B):

1. Momentarily press button corresponding to desired suite.

2. Reply in a normal voice when spoken to. Reply is hands-

free.

3. When door release buzzes, enter through door.

Suite Station (VM104):

1. When call tone is heard, pick up intercom handset.

2. Adjust picture brightness and contrast as necessary using

the slide control switches located just below the lower

right corner of the video screen.

3. Identify caller on the video screen and converse with

them.

4. The door may be opened by pressing the door release

button marked

DOOR

A monitor will stay on for approximately 1 minute when

called. Picture is delayed by approximately 3 to 5 seconds.

When the door release is activated, or when a second caller

rings another suite, the monitor will shut off.

Calls may also be initiated from the VM104 by pressing the

video monitor button marked

camera and may be used to re-initiate a call that has been

canceled, or to monitor the entrance panel. The monitor will

stay on for approximately 1 minute. Only 1 monitor at a

time should be on using video monitor button.

If standby control is switched

the monitor will remain on standby, ready to operate when

another call is placed from the entrance panel. NOTE:

Performance may vary with large or small installations. If

no video contact with the entrance is desired, or if a tenant is

leaving the suite, the standby switch may be turned

Audio communication will still operate normally.

. This activates the

MONITOR

, the red LED will light and

SYSTEM MAINTENANCE

Entrance Panel (VM320B):

Directory panels are accessible by removing the self-tapping

metal screw(s) located in the top L-channel just above each

panel. After removing screws, lift L-channel away from

frame. Panel can then be removed. Apply directory listings

as desired, and replace panels by reversing the above

procedure.

Control Unit (PK314A):

Each PK314A has a 5 amp, 3AG fuse for overload protection.

Replace this fuse only with the same type and rating. If this

fuse continually opens, check for incorrect wiring or

equipment failure.

TROUBLESHOOTING

System:

Check for 15–18 VDC on PK314A terminals P and N. This

voltage should also appear between the + and - terminals of

all video monitors. NOTE: The PK314A has an electronic

current limiter that will shut the unit off in the presence of a

short circuit on the output terminals. When the short is

removed, the output should appear again. The current limiter

will also act in case of an overload (too many monitors),

which will cause the output to switch on and off rapidly.

This may be noticed only if all monitors are turned on.

If power supply function is satisfactory and monitors turn

on (screen lights up) but no picture is displayed, check the

camera by connecting a monitor directly. If the camera does

not turn on, check for 12 VDC on camera terminals CP and

CN, then check for 10 VDC on PK314A terminal CT

(terminal N is negative). Terminal CT voltage comes from

the video distribution system (PK320).

Problems with the video distribution system are usually due

to incorrect wiring. Check that CT terminal on each video

monitor connects directly to the distribution amplifier

(PK320) that is feeding the video signal to it. This is

necessary because the PK320 is turned on by the connection

from the CT terminal on the active monitor to PK320

terminal A. Terminal B on the PK320 connects to PK314A

terminal CT to turn on the camera.

Intercom:

Incorrect wiring is the cause of most intercom problems.

Check the PK314A by disconnecting the common wires,

connecting a monitor directly, and then checking

communication. The telephone operation is independent of

the video section and should operate even if the video does

not. The use of twisted pair wiring as shown on the

connecting diagram (Figure 5) is essential for operation.

Video Monitors:

Video monitors are best checked by substitution. If the red

OFF

standby LED is not illuminated when the unit is turned on,

verify that +17 VDC is present. If present, replace the

monitor; if not, troubleshoot wiring for +17 VDC.

IL498 Tek-VIEW

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