SIGNAL PATH
Digital Input
One parallel digital composite input via 25 way DB connector in accordance
with SMPTE 244M (110 Ohm
±
10 Ohms)
Two serial inputs for 143 Mbs/177Mbs composite digital video data in
accordance with SMPTE 259M-A via passive loop-through BNC connectors for
75 Ohms.
Return loss better than -15 dB to 270 MHz at all times (active or inactive)
Reference Input
One input via passive loop-through BNC connectors for 75 Ohms. Nominal input
level 1 V p-p composite video, black burst at standard level or mixed syncs at
2 V p-p.
Return loss better than -35 dB to 5.75 MHz.
RollCall
Input
One input via BNC connector for 75 Ohms. For connection to RollCall
network
Rate Conversion
All digital rate conversion is performed operating on a data path with a minimum
of 10 bits resolution.
The rate conversion method used is the subject of a Snell & Wilcox patent.
Synchroniser
A full 10-bit digital frame synchroniser is incorporated into the main signal
processing path.
The output of the synchroniser may be locked to the input video, the reference
video or allowed to free run.
Control
Limited control functions are available from card edge switches with modes of
operation indicated by LED’s.
Full control is via the optional front panel or by using RollCall
which can control
the unit from a P.C. or a remote front panel.
Digital Output
Four serial digital outputs are provided via BNC connectors for 75 Ohms.
The serial component digital output is in accordance with SMPTE 259M-C
Return loss is better than -15 dB to 270 MHz.
Power Requirements
90 V to 250 V 50/60Hz A.C. IEC Socket Fused 1A(T)
(Note that EN60950 clause 1.4.5 requires safe operation taking into account
a tolerance of +6% to -10% on this voltage range)
Power Consumption 50VA maximum
Temperature Range
0 to 40°C operating (Unit incorporates a cooling fan)
Mechanical
The unit is ruggedly constructed in a 19" 1U steel rack mount case.
Dimensions
483mm x 457mm x 45mm (W, D, H.)
Weight
7 kg
SECTION 2
Specifications
MDD550050398
Software Version 1.3.1 onwards 2.2
