Kramer Electronics Ltd.
Getting to Know Your VS-55YC Switcher
The Kramer VS-55YC is a high performance 5x1 vertical interval switcher designed for s-Video (Y/C)
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-55YC 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-55YC are described in Figure and Table .
: VS-55YC Front and Rear Panel Features
: VS-55YC 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 4P connectors that serve as the inputs to the machine.
4. OUT socket 1 4P 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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