Modular Telecom Router
Rev. 4
Status surveillance:
On each board with LED, and via system controller.
Synchronisation handled
by SysCon
1
:
Connector(s):
-
Analogue Black Burst, Looped. Both PAL and NTSC
supported.
-
Tri-Level, Looped. For HD signal formats only.
-
Distribution of synchronisation signals between several
routers.
BNC.
Configuration storage:
Removable compact flash card.
Other Features:
-
Monitoring output on channel 33 from each module. 32x1 switch.
(Same as EDH channel).
Optional Features:
Redundant control:
Redundant Matrix Control using 2x SysCon.
TCP/IP:
Web interface, with GYDA-VX.
SNMP agent:
With GYDA-VX.
Event log:
With GYDA-VX.
2.4
Signal specifications
Electrical signal inputs:
Standard:
ITU G.703 CMI.
Data rate:
140Mbps / 155Mbps.
Connector:
75 ohm BNC female.
Impedance:
75 ohm nominal.
Return loss:
> 15dB (5-540Mhz).
Cable equalisation:
0 to 300m, typical Belden 8281.
Electrical signal outputs:
Connector:
75 ohm BNC female.
Impedance:
75 ohm nominal.
Return loss:
> 15dB (5-540Mhz).
Signal level:
1000mVp-p ±10%.
Signal polarity:
Non-inverting with respect to inputs.
Signal transition (both video formats):
Jitter:
< 0.2 UI.
Reference inputs:
Number of inputs:
2 standard, both reference signals supplied to both
SysCon-SM when used in redundant mode.
Connector:
75 ohm BNC female, loop-thru.
Return loss:
> 40dB (100kHz – 5Mhz)
> 35dB (5-10MHz).
Signal format:
NTSC or PAL Black Burst or HD Tri-Level according to
SMPTE 274M, SMPTE 276M.
Signal level:
Nominal 1.0Vp-p.
Field selectivity:
Odd/Even field selectable.
1
Synchronisation of a telecom router is not necessary, but an available feature for users who intend to
switch this router synchronised to video, using video synchronisation signals.
10
