Grass Valley Switcher Products User Manual

Page 69

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Switcher Products — Protocols Manual69

Editor Commands

The command specifies the auto transition rate in terms of frames ranging
from 000 to 999. Specify the auto transition rate in the command by sup-
plying three data bytes:

HD — The hundreds digit in BCD. The MSB is the “execute” bit.

TN — The tens digit in BCD.

UN — The units digit in BCD. The four MSBs are control bits to select
Key 1, 2, 3 and Key 4 rates in addition to the auto transition rate.

The format of the HD byte is provided in

Table 61

.

The format of the TN byte is provided in

Table 62

.

Table 61. HD Byte Format

Bit

7

6

5

4

3

2

1

0

X

0

0

0

X

X

X

X

Combination of 4 bits makes Hundreds digits

Rate value of 0 through 9 in BCD (0000 to 1001)

0 = Set rate only, do not perform the transition
1 = Set rate and perform the auto transition

Table 62. TN Byte Format

Bit

7

6

5

4

3

2

1

0

0

0

0

0

X

X

X

X

Combination of 4 bits makes Tens digits

Rate value of 0 through 9 in BCD (0000 to 1001)

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