RDL RACK-UP Series User manual

RACK-UP®SERIES
Model RU-VSX4
4-Input Video Switcher
Loop-Through Output from each Input
Vertical Interval Switching
Local or Remote Control
10 MHz Bandwidth, NTSC or PAL
Open-Collector Outputs
All Solid-State Switching
APPLICATION: The RU-VSX4 is the ideal choice in most applications where four video signals need to
be switched to a single output. The RU-VSX4 has two rear-panel jacks for each of the four video bridging
input stages. One jack is for the input signal; the other is a loop-through output of the source signal. If
75-termination of the input signal is required, the terminator (provided) is plugged onto the LOOP OUT
jack. The output video signal is 75 back-terminated to provide unity gain into a 75 terminated input.
The front panel features 4 high-reliability, keyboard-style pushbuttons with LED indicators corresponding
to each video input. The LED indicators show which video source is active. If the button for an active
source is pushed, all video sources are turned off until the next source selection.
A front panel LOCAL/REMOTE toggle switch activates either the front-panel buttons or a rear-panel
connected remote control. In the REMOTE mode, the inputs are selected by an external momentary
switch or open-collector closure to ground. Five remote input terminals are provided; one for each video
source, and one to shut off all video inputs. Installing a jumper from the CTRL OFF terminal to ground
permits the RU-VSX4 to be controlled by equipment providing a continuous closure only when a source is
to be switched on. In this mode, the RU-VSX4 may be controlled by an RDL D SERIES-RC4RU wall-
mount 4-button remote control, or OEM equipment. When a video source is selected, the RU-VSX4
provides an open-collector 50 mA output to control other equipment or modules.
When a video source is requested, either from the front panel or by remote, the RU-VSX4 waits until the
next vertical interval to switch to the requested video source. If no video is present then the switch occurs
instantly. This feature avoids the screen roll typically associated with unsynced video switchers.
Wherever a video switcher is needed to provide wide-band video source selection, local or remote control,
reliability, compactness and unsurpassed versatility, the RU-VSX4 is the ideal choice. Use the RU-RA3
rack-mount adapter to mount multiple RU-VSX4s, or to combine related products (such as audio mixing,
audio distribution, or audio metering) into a single rack unit!
RDL 659 6th St. Prescott, AZ., USA 86301 [phone] FAX [phone] www.rdlnet.com

RACK-UP®SERIES
Model RU-VSX4
4-Input Video Switcher
TYPICAL PERFORMANCE
Input Impedance: 5 kBridging 75 Line
Gain: Unity, 75 terminated Input; 75 terminated Output
Load Impedance: 75 
Outputs (5): 4 Loop Out from Input Signals; 1 Amplified OUTPUT
Operating Signal Level: 0.5 to 1 V p-p
Frequency Response: 10 Hz to 10 MHz (+/- 0.35 dB)
Noise: < -70 dB below 1 V p-p
Crosstalk: < -55 dB
Off Attenuation: > 65 dB
Differential Gain: 0.1%
Differential Phase: 0.3 degree
Connector Type: BNC, gold plated
External Control Inputs: Electronic or mechanical closure to ground, 1 mA
External Control Outputs (4): 50 mA, Open-collector to Ground
Power Requirement: 24 Vdc @ 110 mA, Ground-referenced
Installation/Operation
EN55103-1 E1-E5; EN55103-2 E1-E4
Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.
891-3060J
Radio Design Labs Technical Support Centers
U.S.A. [phone], [phone]; Fax: [phone]
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
NOTE: This equipment has been tested and found to
comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rule. These limits are designed to
provide reasonable protection against harmful interference
in a residential installation. The equipment generates,
uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions,
may cause harmful interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception,
which can be determined by turning the equipment off an
on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment
and receiver
Connect the equipment into an outlet on a circuit
different from that which the receiver is
connected.
Consult the dealer or an experienced radio/TV
technician for hel
p
.