Rs422 Control; Dd1500 As An Rs422 Master - Akai DD1500 User Manual

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DD1500 AS AN RS422 MASTER

The DD1500 can be used as an RS422 master using the Sony™ P2 protocol. This means
that all play, jog, shuttle and locate commands are issued from the DD1500 allowing you
to control a VTR equipped with RS422 and the DD1500 together. Connections should be
made as shown in the CONNECTIONS section with the DD1500m's RS422 output
connected to the VTR and the timecode output from the VTR connected to the
DD1500m's timecode input.
Switching on the EXT M/C key engages the RS422 function. Because it is necessary for
the external VTR to 'report back' its timecode position to the DD1500 via the SMPTE IN
and EXT. TIME key, when you switch EXT M/C on, the EXT. TIME key automatically
switches on to ensure correct lock up of both the DD1500 and the VTR.
However, because of the frame accuracy limit imposed on the DD1500 by the VTR over
RS422, it is sometimes necessary to 'isolate' the DD1500 for greater editing accuracy, To
do this, simply switch off EXT M/C and EXT. TIME - this will allow the DD1500 to be used
'stand alone'.
As a practical example, let's say you are trying to sync a door slam sound effect in the
DD's project with the picture on video. You could, of course, do everything referenced to
frame accurate picture but, you just cannot get the door slam precisely in sync. By
switching off EXT M/C and EXT. TIME, you can momentarily disengage the VTR,
'isolating' the DD1500 and you can place the sound effect, nudging it backwards or
forwards in sub-frame increments on the DD1500 until you think it's at the right position.
You can then re-engage the VTR by switching on EXT M/C and EXT. TIME again and
trying it out against picture. You can repeat this process until it's perfectly in sync.
For those few occasions where it may be necessary to control only the VTR, it is also
possible to disengage the DD1500 by only switching off the EXT. TIME key when the EXT
M/C key is on. In this case, the DD1500 is effectively disabled and you can control just the
VTR from the DL1500.
Version 2.00 - March, 1996
AUTOLOCATOR
AUTO REHEARSE F1 F2
SET
CYCLE PRE-ROLL EXIT
SET SET
EXT. TIME COPY CUT ERASE
OFFSET > CUT DISCARD
GRAB TIME EDIT CUE IN
GOTO
JOG
SPOOL
STORE
OVER FRO FROM
REC
REVERSE
UTILITIES - RS422 - MASTER - 18
EDIT NUMERIC ENTRY
F3 F4 F5 F6
7
4
UNDO EXECUTE
1
REDO
PASTE INSERT TRIM
0
IN > NOW SET
-/<
SYNC OUT SELECT CUE
NUDGE DATA ENTRY/NUDGE
SET
JOG/SPOOL
ZOOM OUT
PAN LINE OUT
PLAYSHEET
8 9
L R MIN
5 6 HEADPHONE
LEVEL LEVEL
+12dB
2 3
MI
0 0
0dB
+/>
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