3overview – Kramer Electronics VM-24HD User Manual
Page 5

Overview
3
3
Overview
The
VM-24HD 2 x 1:4 HD/SD – SDI DA is a high performance 2 x 1:4
distributor for all SDI video signals.
In particular, the
VM-24HD features:
Two inputs that distribute each signal to four identical outputs
using BNC connectors
1.485Gbps bit rate for compatibility with standard definition and
high definition serial digital video signals (SD
1
/HD
2
-SDI)
SMPTE 292M, 259M, 344M, and 372M (dual link application)
compliance and data rates of 143, 177, 270, 360, 540, 1483.5, and
1485Mbps
Automatic, multi-rate, equalization and reclocking for losses
typical to long runs of 75 co-axial cable
LOCK, HD, and SD output indication LEDs
Achieving the best performance means:
Connecting 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)
Avoiding interference from neighboring electrical appliances that
may adversely influence signal quality and positioning your
Kramer
VM-24HD away from moisture, excessive sunlight and
dust
Caution
– No operator-serviceable parts inside unit.
Warning
– Use only the Kramer Electronics input power
wall adapter that is provided with this unit
3
.
Warning
– Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.
1 Standard Definition (SD) means an NTSC or PAL compatible video format, consisting of 480 (for NTSC) or 576 (for PAL)
lines of interlaced video; and progressive scan 480p or 576p video
2 High Definition (HD) means a video format, consisting of either 720 active lines of progressive video or 1080 lines of either
progressive or interlaced video
3 For example: model number AD2512C, part number 2535-000251