Videoswitch VT - Manual (Page 22)

VT Series 2 User Manual Page 22
Videoswitch
VT601c.doc
11. Specifications
11.1 Telemetry
11.1.1 Coax Telemetry Output
500kHz on-off keying during vertical blanking interval, transmitted to camera currently selected on
monitor A.
11.1.2 Twisted Pair Telemetry Output
RS232 or 20mA Current Loop. 7.8kbaud or 2400 baud. Data format: 1 start bit, 8 data bits, 1 parity bit, 1
stop bit.
11.1.3 Twisted Pair Telemetry Slave Input
Connect to twisted pair telemetry output of slave transmitter. The same interface type (RS232 or 20mA)
must be used by master and slaves.
11.2 Switcher
11.2.1 Auto Dwell Times
1 second to 255 seconds (4 minutes approx.)
11.2.2 Alarm Hold, Cycle and Relay Hold Times
1 second to 255 seconds (4 minutes approx.)
11.3 Video Inputs & Outputs
11.3.1 Video Inputs & Outputs
1V pk-pk, terminated with 75 Ohms (termination may be removed on a per camera basis). PAL colour or
monochrome composite video signals.
11.3.2 DC Restoration
Outputs are DC restored to <100mV.
11.4 Alarms
11.4.1 Alarm Inputs/Outputs
Alarm inputs require normally open contacts to activate (internally pulled up to 5V via 10K
Ω
resistors).
Alarm output is change-over relay contacts, rated at 500mA, 24 Volts ac/dc.
11.5 Power Requirements
220/240Vac 50/60Hz 10W (110Vac available as an option)
11.6 Dimensions
11.6.1 VT-14A, VT-18A, VT-28A
310 mm (wide) x 145 mm (deep) x 60 mm (high)
11.6.2 VT-11
190 mm (wide) x 145 mm (deep) x 60 mm (high)
11.7 Environmental
Operating Temperature 0 to +40
°
C
Storage Temperature -20 to +70
°
C
Humidity 5% to 95% non-condensing