Importer Plus Technical Instruction Manual Pre-installation tasks
Page 2-8 Issue 0.02 2010-03-29
Figure 2.5: Multiple SPS
Using an HD-4 audio card. Some Importers include a Prodif HD-4 audio card (Nautel Part #
UA100). This card has a single BNC type connector which is a word clock input. Applying the
44.1 kHz word clock to this input will synchronize the Importer Plus audio.
Additional equipment
You need the following additional equipment to synchronize the SPS audio sample rate:
• GPS receiver with a 10 MHz output (also part of GPS synchronization unit/card)
• Word clock generator that accepts a 10 MHz reference (also part of GPS synchronization
unit/card)
• Sample rate converter or suitable audio processor (one per channel) that accepts an external
sample rate word clock
Audio
Processor
IMPORTER PLUS
Note: Commercial sample rate converters are also
available which can be used instead of an audio
processor.
SPS2 Audio
SPS1 Audio
SPS1 Audio
(locked)
GPS SYNCH
SPS2 Audio
(locked)
Word Clock
44.1 kHz
Importer Plus and NE IBOC or Exporter not co-located
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