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The camera's synchronised HD/SD-SDI video output is fed into the TDM-700C interface, together with
any return control data. The TDM-700C encodes them onto another 3G optical carrier for transmission
back to the base station using the second fibre. The TDM-700C card normally synchronises to the SDI
signal; if there is no camera output for any reason, it free-runs. The returned optical signal is received at
the base station, which synchronises to the incoming 3G data, thus ensuring that the extracted SDI feed
remains in sync with the original genlock.
All common SDI standards and line/frame rates are supported and auto-detected (see page 13), and
the system will assume the standard of the video signal applied at the camera end. If no SDI signal is
present on initial power-up, the TDM-700 defaults to 1080i/50. The video recovered at the base station
will always be of the same standard as that encoded at the camera end. In the event of loss of video, the
last-used standard will be stored as long as power is applied.
Connections for Installation
The TDM-700 system has been designed for rapid deployment; no set-up procedure is necessary.
Base end:
TDM-700B, TDM-710B, TDM-720B and TDM-730B: plug the card into a spare slot in a Bluebell BC100,
BC160 modular rack unit or a BC120 triple-slot enclosure. Power is provided by the rack in these cases.
If using a BC101 or BC102 enclosure, fit the card and connect an external source of DC power via the
XLR4 socket. TDM-700BE stand-alone units are self-contained and merely require external DC power
to be connected,
Input Connections:
• Genlock (TDM-700B, TDM-710B and TDM-710BE): this can be a standard Bi-level (Black Burst) or
Tri-level sync. The peak-to-peak input level must not exceed 1.8 V. Alternatively, the input can be
used as a monitoring feed back to the POV.
Output connections:
• Video (all versions): HD/SD-SDI output from the camera.
Bi-directional connections:
• Optical – on all plug-in card versions the optical port is a dual SFP port on a removable transceiver
cartridge. Use single-mode fibres to connect either directly to the POV location, or to a break-
out panel to convert to ruggedised fibre for outside deployment. The transmission wavelength is
1310 nm, unless the faceplate is marked to the contrary.
On stand-alone (BE) versions, the optical connector will be either a Lemo L3K or a Neutrik OpticalCOM
(specified at time of ordering).
• Ethernet (TDM-700B, TDM-720B and TDM-700BE): This passes Ethernet data transparently to/from
the POV device. The TDM-700 system does not appear to a network as a client. Use this connection
with a POV camera (or other device) which can be controlled via Ethernet. The port auto-negotiates
full or half duplex 10/100 BaseT working.
• Serial/GPI (TDM-700B, TDM-710B, TDM-730B and TDM-700BE): see the pinout table at
page 8 for wiring details. Use this connection with cameras requiring RS-232/422 serial control.
Connect pins 1, 2 and 6 if using RS-232, or pins 1, 3, 5, 8 and 9 if using RS-422; maximum data rates
are approximately 120 kbaud for RS-232 and 1 Mbaud for RS-422.
10
TDM-700 Series Operation Guide V1.2
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