Source ids – Grass Valley Switcher Products User Manual

Page 31

Switcher Products — Protocols Manual31

Kayenne Contribution Tally Protocol

All messages are of fixed length. Each message type has its own character-
istic length (see

). Note that a complete contribution tally now con-

sists of 303 bytes instead of 223 for Kalypso. Because the bandwidth of a
serial connection is limited to approximately 128 bytes per field, the tally
information is broken into smaller messages summarized in the table
below. Even with prioritized updates, there is no guarantee that all changes
will be communicated within one field.

The message structure for Kayenne differs from the Kalypso/Zodiak pro-
tocol in the following ways:

•

Different message sync mechanism.

•

Different length for most messages with corresponding different length
for total contribution tally information.

Source IDs

Valid source IDs used in this protocol for Kayenne range from 1-146. A
source value of 0 indicates the input or bus is not in use. Source IDs in the
range 1-96 represent external sources. Source IDs in the range 97-146 origi-
nate within the switcher and are fixed.

Table 11. Kayenne Contribution Tally Messages

Command Code

Instance Number

Message length

per instance

Message length

all instances

Running
Subtotal

0x8 (ME contribution)

1 = ME 1

205

2 = ME 2

3 = ME 3

4 = ME 4

5 = ME 5

0x9 (DPM contribution)

1 = eDPM

219

0xA (SS contribution)

1 = Image Store

229

0xB (Output status)

1 = Outputs 1-8

301

2 = Outputs 9-16

3 = Outputs 17-24

4 = Outputs 25-32

5 = Outputs 33-40

6 = Outputs 41-48

0xC (Source Name)

1 = Name & Nickname (1-146)

N/A

0xD (Update)

1 = Initialize Kalypso protocol

2 2

303

2 = Data Consistent

3 = Initialize Kayenne protocol

0xE (unused)

0xF (unused)