Tascam MMR-8 User Manual download pdf (Page 97)

MMR-8 TASCAM MMR-8 Owner’s Manual • Chapter 6 • File Format Support

Serial Transport

This mode allows the MMP-16 to control an external audio or video transport connected to the 9-pin

serial Transport connector. Video and audio decks using the P2 protocol can be controlled (including

models from Accom, Alesis, Ampex, Fostex, JVC, Otari, Panasonic, Sony, and TASCAM). When in

Serial Tran mode, the MM series unit will output transport commands to external serial devices through

the 9-pin serial Transport output using Sony P-2 protocol. The unit will then lock to the external serial

device via linear timecode coming from the device through the MM unit’s timecode input (not through

serial timecode).

Editor

Using the Editor connector (and Sony P2 protocol) a video editor or other non-Lynx synchronizer can

control the MMP-16 transport functions when the MMP-16 Control Mode is set to Editor. When in Editor

mode, the MM series unit will respond to transport and track arming commands coming in to the 9-pin

serial Editor port. This setting is typically used with traditional video edit controllers.

Varispeed

Varispeed mode allows for setting playback speed within a range of 87.5% to 112.5% of nominal play

speed. This range varies according to the sample rate selected. Varispeed varies the playback frequency as

well as the digital sample clock on the digital output.

Serial Editor Port Details

There are a number of important details to note about the Serial Editor port as noted below.

Record Ready Tallies

Record ready tallies issued over the 9-pin serial Editor port now include tracks armed at the MMR-8 front

panel or MM-RC, and not just those tracks armed by serial command. This allows an external Serial

device to know when a track has been armed for recording, regardless of the source of the track arm

command.

Sony P2 Chase and Offset Commands

Sony P-2 protocol Chase and Offset commands are accepted by the MMR/MMP. Setup Menu 404 allows

for setting the chase source to either Timecode, Biphase, or Disabled.

Serial Editor Port Active When Not ONLINE

The MMR/MMP unit will follow transport, track arm, and record commands given on the 9-pin serial

Editor port even when the unit is not ONLINE.

Automatic ONLINE

The MMR/MMP unit will automatically be placed in the ONLINE state when placed in Chase via the

serial 9-pin Editor port.

Local Machine Response to Serial Record Commands

Serial record arm and punch in/out commands are honored locally on each machine, regardless of whether

it is acting as an MMR Bus slave or master machine. These commands are not propagated across the

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Tascam MMR-8 User Manual Page 97