Data field format – Grass Valley Switcher Products User Manual

Page 86

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86

Switcher Products — Protocols Manual

Section 2 — Editor Protocol

resents the first address, and bit 12 represents the DPM address. This
format is used with the FE Effects Address.

Data Field Format

All time data (field count) and speed data is specified to be binary data in
S15.16 format. The lower two bytes specify a fractional field value. The
topmost bit is the sign bit and the next 15 bits represent whole field values.
Note the following examples.

+1 field : 00 01 00 00

– 1 field : FF FF 00 00

+1 (unity) speed : 00 01 00 00

– 1/2 speed : FF FF 80 00

Setting the Run Time for a speed of zero is the same as sending a STOP com-
mand.

The editor is allowed to write a negative field count or to trim in a negative
direction which results in a negative field count. In either case the result is
to display a negative timecode in the menu and position the video at the 1st

Table 96. Zodiak Effects Addresses Byte Format

Bit

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

PGM-PST Mix

Mix/Effects 1

Mix/Effects 2

Mix/Effects 3

DSK

Miscellaneous (MISC) 1

Miscellaneous (MISC) 2

Miscellaneous (MISC) 3

DPM

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