Kramer Electronics VS-41HD - Manual (Page 6)

Overview
3
3
3 Overview
The Kramer VS-41HD is a true 4x1 switcher
1
for standard definition
2
/ high
definition
3
• Input and output signals on BNC connectors and selector buttons
that automatically light up in different colors—red, when the
VS-41HD detects a ‘standard definition’ signal, or blue, when it
detects a ‘high definition’ signal
SDI signals that lets you distribute any one of the four inputs to
two identical outputs. The VS-41HD features:
• Reclocking and equalization on each input
• Distribution of digital information (embedded audio, Teletext, time code
and so on) during the vertical interval period
• The ability to switch genlocked video signals according to timing of the
GENLOCK reference input. Switching according to the Bi-level or
Tri-level Genlock input according to SMPTE RP-168
4
• Front panel locking, and an OFF button to disconnect the output
The VS-41HD is housed in a 19" 1U rack mountable enclosure and is fed
from a 100-240 VAC universal switching power supply. It can be controlled
via the front panel buttons, infrared remote control transmitter, remotely, by
RS-232 or RS-485 serial commands transmitted by a touch screen system, PC,
or other serial controller, as well as via the ETHERNET and/or remote contact
closure for forced operation.
To achieve the best performance:
• Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
• Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your Kramer VS-41HD
away from moisture, excessive sunlight and dust
4 Your VS-41HD 4x1 HD/SD-SDI Switcher / DA
Figure 1 , Table 1 , and Table 2 define the VS-41HD 4x1 HD/SD-SDI Switcher / DA.
1 Switching is implemented during the vertical interval period according to the SMPTE RP-168 standard, when using
synchronized SDI sources
2 Standard Definition (SD) means an NTSC or PAL compatible video format, consisting of 480 (for NTSC) or 576 (for PAL)
lines of interlaced video
3 High Definition (HD) in this case includes 480p, 576p, 720p and 1080i (all @ 50/60Hz); 1080p @ 24/25Hz; as well as the
1/1.0001 refresh rates
4 The sources must be genlocked to the GENLOCK input in order to switch cleanly