Kramer Electronics Ltd.
Getting to Know Your VS-55V switcher
The Kramer VS-55V is a high performance 5x1 vertical interval switcher designed for composite video
signals. One of up to five sources can be routed to one monitor, projector, or other receiving device.
Since it switches during the vertical interval, transitions are glitch-free when sources share common
reference sync. The LINK connector is designed to allow the use of a VS-55A to form “audio-follow-
video” systems. The VS-55V also provides an EXT connector, which allows
units to be
combined to form larger switching systems. For example, two units will form a 10x1, three will form a
15x1, etc. A 12VDC power supply is included for typical operation but the optional model VA-50P can
power up to six Kramer devices requiring 12VDC. All Kramer VM-50 and VS-55 series products can be
rack-mounted using the model RK-50R kit that holds two units in one or two vertical rack spaces.
Panel features of the VS-55V are described in Figure and Table .
: VS-55V Front and Rear Panel Features
: VS-55V Front and Rear Panel Features
No. Feature Function
1. POWER Switch Supplies power to the machine
2. INPUT Selector switches Illuminated touch-button switches for selecting the desired input.
3. INPUTS sockets 5 BNC connectors that serve as the inputs to the machine.
4. OUT socket 1 BNC connector that serves as the output of the machine.
5. EXT socket A single RCA socket that is used for switcher extension
6. 12VDC socket For connecting a DC power supply to the machine
7. LINK socket A DB-9 female socket for parallel operation of several machines or
for contact closure remote control.
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