10 Kramer Protocol 2000
The
1st BYTE: | Bit 7 (MSB) | Defined as 0. | |
| Bit 6 | 0 | - for sending information to the switchers (from the PC) |
|
| 1 | - for sending to the PC (from the switcher). |
| Bits 5…0 | INSTRUCTION | |
The function that the switcher is to perform is defined in the INSTRUCTION table below. Similarly, if a function is performed via the machine’s front panel, then these bits are set according to the INSTRUCTION NO. that was performed.
2nd BYTE: | Bit 7 (MSB) | Defined as 1. |
| Bits 4…0 | Channel number |
| Bit 5 | Left (set to 1 when referring to the left channel) |
| Bit 6 | Right (set to 1 when referring to the right channel) |
| Note: To mute with regular attenuation use Bit 5 and 6 = 1 | |
| To mute immediately use Bit 5 and 6 = 0, however there may be a pop | |
| or click on the output of the muted channel. | |
3rd BYTE: | Bit 7 (MSB) | Defined as 1. |
| Bits 6…0 | 7 least significant bits of data |
4th BYTE: | Bit 7 (MSB) | Defined as 1. |
| Bit 5 | MSB of data (7 LSBs are in 3rd byte). |
| Bits 4…0 | MACHINE NUMBER. |
For
All the values in the table are decimal, unless otherwise stated
INSTRUCTION
# |
|
| DESCRIPTION | 3rd BYTE | |
22dec |
| SET AUDIO GAIN | Set 7 LSBs of gain value | ||
(16hex) |
|
|
| Gain (dB) = 31.5 – | |
24dec |
| INCREASE / DECREASE | 0 - increase gain | ||
(18hex) |
| AUDIO GAIN | 1 - decrease gain | ||
25dec |
| REQUEST AUDIO GAIN | As in Instruction 22dec above. | ||
(19hex) |
|
|
| When requesting both channels, the reply is: | |
|
|
|
|
| For equal left and right gain: bits 5 = bit 6 |
|
|
|
|
| For unequal left and right gain: bits 6 = 0; bit 5 = 1 for reply for left |
|
|
|
|
| channel |
|
| In addition to the above, instructions 15, 18, 19, 20, 61, 62 (decimal) of Kramer’s Protocol 2000 are also fully | |||
|
| implemented in the unit. For instructions 18 and 19, setups 01 to 15 (decimal) are valid. | |||
|
| See the following examples: |
| ||
|
|
| |||
EXAMPLES |
|
| |||
COMMAND | EXAMPLES (MACHINE # 1) | ||||
16h | E7h 90h 81h | Set channel 7 both left and right gain | |||
16h | AAh FFh 81h | Set channel 10 left gain | |||
16h | CAh COh A1h | Set channel 10 right gain 0dB | |||
16h | FOh DOh A1h | Set channel 16 both left and right gain +8dB | |||
18h | EFh 80h 81h | Increment (increase) gain on 0.5dB on left and right of channel 15 | |||
19h | CFh 80h 81h | Request gain of channel 15 right. If the gain is 0dB for both left and right channels, then the | |||
|
|
|
| reply would be: 59h EFh COh A1h | |
19h | EEh 80h 81h | Request gain of channel 14 both left and right. If the gain is different for the left and right | |||
|
|
|
| channels, then, for +3dB gain in the left channel the reply would be: 59h AEh C6h A1h | |
26 |
