Technical Specification
Reference Frequency Output
A reference frequency output is provided via the L-BAND OUT MAIN connector,
intended for use by an external frequency up-converter.
Table B.28 Reference Frequency Output Specification
Item Specification
Output power 0 dBm ±3 dB sine-wave into 50 Ω load
Switchable on/off
Frequency 10 MHz
Frequency stability < ±0.02 ppm versus temperature
< ±0.0002 ppm/day ageing after 30 days continuous operation
< ±0.05 ppm/year ageing after 30 days continuous operation
Initial frequency setting
accuracy (ex factory)
±0.1 ppm max
Phase noise −120 dBc/Hz at 10 Hz offset
−140 dBc/Hz at 100 Hz offset
−150 dBc/Hz at 1 kHz offset
DC Power Output
A DC power output is provided via the L-BAND OUT MAIN connector, intended for
powering an external frequency up-converter.
Table B.29 DC Power Output Specification
Item Specification
Voltage (open circuit) Off, +15 V, +24 V (switchable)
Output resistance <1 Ω
Ripple <20 mV pk-pk
Rated current 500 mA max
Short-circuit current 800 mA max (protected by electronic circuit-breaker)
B.3.14 ASI I/O Option Card
The ASI I/O option card provides a means of outputting an MPEG-2 Transport
Stream over an ASI connection. Two outputs are provided which can be configured
as "mirrored", such that the same TS is output from each connection, or
independent, such that a different TS is output from each.
Two input BNC connectors and associated "lock" LED's are available for feeding the
unit with external Transport Streams.
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