Panasonic WJ-SQ508 - Manual (Page 8)

43. Quick Scan Input Terminal (QUICK SCAN IN)
An alarm sensor unit which has an open collector circuit
can be used for this input connector.
When this connector is activated (grounded), the alarm
buzzer sounds and the Alarm Indicator (7) blinks. At the
same time, all cameras connected to the WJ-SQ508
will be scanned quickly in sequence. The scanning
picture is provided to the Alarm/Sequence Video
Output Connector (
22 ).
Note;
The switching interval can be preadjusted with the
programming function. Refer to the programming
procedure on page
10 .
44. Cable-loss Compensation Switches
(CABLE COMP, 1/2-/8, L/M/S)
These switches are used to set the most suitable
position of the cable-loss compensator for each
camera input signal. The video output signals at
the Alarm/Sequence Video Output Connector (22) and
the Spot/Sequence Video Output Connector (23) are
compensated. The suitable switch position and its
approximate cable length are as follows:
S: up to 1.300ft (394m)
M: 1.300ft (394m) to 2.300ft (697m)
L; 2.300ft (697m) to 3.000ft (909m)
(with RG-59U, BELDEN 9259 or. equivalent)
Note:
When this switch is set improperly, the camera
may not be controlled properly.
FUNCTIONAL BLOCK DIAGRAM
45. Video Output Connectors (VIDEO OUT)
The video input signals connected to the Video
Input Connectors (21) are looped through to these
connectors.
The following diagram shows a simplified signal flow of the
WJ-SQ508.
• When the WJ-SQ508 is in the sequence mode, the
output signals from ALARM/SEQ VIDEO OUT and
SPOT/SEQ VIDEO OUT are sequential video signals.
• When the ALARM IN/QUICK SCAN IN is activated, the
alarmed video signal is provided to the ALARM /SEQ
VIDEO OUT.
However, the sequential video signal is still provided to
the SPOT/SEQ video out.
When the spot switch is selected, the corresponding
video signal is provided to the SPOT/SEQ VIDEO OUT.
The
audio signal will be eliminated when the
SPOT/SEQ AUDIO switch is turned to the OFF position.
When
the PROGRAM switch is pressed, the
programmed command signal is supplied to the matrix
circuit to provide the programmed sequential video
signal to the ALARM/SEQ and SPOT/SEQ video output.
VIDEO INPUT
1-8
SPOT/SEQ
VIDEO SLAVE IN
ALARM/SEQ
VIDEO SLAVE IN
____ L
SWITCHES ON
FRONT PANEL
Audio
Switch
Video
Switch
(Spot)
Video
Switch
(Alarm)
Character Character
Generator Generator
Microprocessor
VIDEO OUTPUT
1-8
AUDIO
ON/OFF
SPOT/SEQ
VIDEO OUT ALARM/SEQ
VIDEO OUT M/S DATA EXT SPOT
IN/OUT IN/OUT TIMING CH
IN/OUT
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