Sonifex Reference Monitors RM Series, User Handbook Manual, Page: 55 / 80

Reference Monitors User Handbook
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RM-HD1 Reference Monitor 3G/HD/SD-SDI Expansion Card
This expansion board allows the monitoring of embedded non-encoded linear PCM audio
channels within an 3G/HD/SD-SDI video signal.
The RM-HD1 card can be used with the RM-2S4, RM-2S10 and RM-4C8 monitors.
The expansion board can extract any selected AES/EBU audio group (4 channels) from the
video signal and pass them to the main Reference Monitor unit for monitoring. Any group
can be selected and can also be optionally delayed by up to ~300ms by using the Sonifex
SCi remote control software. All channels in the selected group can be monitored visually
and 2 channels can be selected to be monitored on the speakers (for the RM-2S4 and
RM-2S10, stereo pairs are selected; the RM-4C8 allows any 2 channels to be monitored).
The input is auto-sensing for either SD, HD or 3G input formats and the extraction of
embedded audio complies with SMPTE-272 (SD) and SMPTE-299 (HD/3G).
The SDI input is equalized, internally re-clocked and re-transmitted to provide a re-clocked
output to pass to external equipment such as another reference monitor.
Fig 3-1: RM-HD1 Expansion Card
Fig 3-2: RM-HD1 Block Diagram
Maximum Audio Delay Through RM-HD1
Samples 14300
Milliseconds 297.9
NTSC PAL 720/60p 720/50p 1080/50i 1080/60i 1080/60p
Frames 8.9 7.4 17.9 14.9 7.4 8.9 17.9
Fields 17.9 14.9 17.9 14.9 14.9 17.9 17.9
Lines 4687 4655 13406 11172 8379 10055 20109
REFERENCE MONIT
ORS RM-HD(E)1, RM-E1X & RM-E1B
3
REFERENCE MONITORS RM-HD(E)1,
RM-E1X & RM-E1B
SDI
Input
4 Channels
To Reference
Monitor
Bank/Source
Select
Audio
De-embedder
Reclocker
SDI
Receiver
Audio
PLL
Audio
Delay
EQ
1 Group
HVF
SDI
Output
CD