Lectrosonics AM16/12 Operating Instructions Manual page 31

Set Input Gain - Sets the input gain of 1 or more input channels.
Host sends command - 30 (1E hex)
Host sends 5 bytes:
Bytes 1-4: 16 bit mask, where each bit position represents one of the 16 inputs. For example, the
lowest bit of the mask represents input 1, the next lowest bit input 2, and so on. The 16 bit mask is
broken into 4 bytes as follows:
Byte 1: Bits 0 - 6 of the mask (in the low 7 bits of the byte)
Byte 2: Bit 7 of the mask (positioned in the LSB of the byte)
Byte 3: Bits 8 - 14 of the mask (in the low 7 bits of the byte)
Byte 4: Bit 15 of the mask (positioned in the LSB of the byte)
A "1" in a bit position will apply the gain in byte 5 to the associated channel, while a "0" in a
bit position will not apply the gain to the associated channel.
Byte 5: Input gain value, 0 - 78 (0-4E hex), which represents +15dB to -63dB, 79 (4F hex) for off, 80
(50 hex) to increment the current gain by 1dB, 81 (51 hex) to decrement the current gain by 1dB, 82
(52 hex) to mute the input, and 83 (53 hex) to unmute it to its pre-mute gain value.
Get NOM Bus Association - Gets the number of the NOM bus to which any one or all of the inputs are associated.
Host sends command - 47 (2F hex)
Host sends 1 byte: input number to get NOM bus association for, 0 - 15 (0-F hex) (representing inputs 1 ­
16) to return the NOM bus associated with that input, or 16 (10 hex) to return all 16 NOM bus associations,
starting with input 1.
Host receives 1 or 16 bytes: NOM bus association for one input or all inputs, depending on the value of the
previous byte sent. NOM bus values are 0 - 7 (for NOM busses 1 - 8) or 8 if the input is not associated with
any NOM bus.
Set NOM Bus Association - Sets the number of the NOM bus to which any one or all of the inputs are associated.
Host sends command - 46 (1E hex)
Host sends 2 or 17 bytes:
Byte 1: Input number, 0 - 15 or 16
Bytes 2-17: If byte 1 is 0 - 15 (0-F hex), only byte 2 should be sent. If byte 2 is 16 (10 hex), all 16
NOM values should
be sent. NOM values are 0 - 7 (for NOM busses 1 - 8) or 8 if the input is not associated with any
NOM bus.
Get Input Activity Status - Gets the current status (i.e. active or inactive) of the 16 inputs. Active means that the
attenuation applied to the input by the automix algorithm is less than or equal to 6dB. Note that the input
activity status is conditioned by the input qualification time and the output hold time, which may be set in the
Miscellaneous Settings tab of the AM16/12 control panel application.
Host sends command - 20 (14 hex)
Host receives 2 bytes:
Byte 1: Input activity for channel 1 - 8, packed in one byte such that the LSB of the byte corresponds
to input 1 and the MSB corresponds to input 8.
Byte 2: Input activity for channel 9 - 17, packed in one byte such that the LSB of the byte corre­
sponds to input 9 and the MSB corresponds to input 16.
Rio Rancho, NM – USA
16 Channel Automatic Matrix Mixer
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