SPM723
Programmable
Stereo Preamp/Mixer
RS-232 Control Manual
®
Released: 14 Aug 2001
Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. (503) 641-7287
an affiliate of Rauland-Borg Corp.
Manual Structure
This Computer control manual is structured so that the programmer only needs to ID a few Perameters for each
command string. All commands are laid out in a table format, and all possible variables are defined in tables at
the end of this manual. As an example you may see a command string of:
Set Main Level
Left
In this case the aaaa, ii, and dd variables need to be defined in order for the command to work. The
aaaa variable is what value you want the Main level Left to be set to in the example above. The ii variable
defines which channel the main level left will be set. The dd variable is the device number being addressed by
the command.
• aaaa, bbbb, cccc, eeee, ffff, gggg, hhhh , kkkk = value to be set to. (always 4 pseudo hex bytes
• ii = object instance number (e.g. Stereo Input #4, ii = “04”)
• dd = device number / address (ranges from 0 to 63 or “00” to “3?”)
To set main level left of channel 1 to +10dB, on device number 3 the command string should read:
000:0101018003(
Response Data Packets are formatted (using pseudo hex) as where:
• vvvv = value of the requested attribute in pseudo hex
• [CR] = carriage return
Response Data Packets will be returned for Request Protocol commands only.
aaaa01ii0180dd(
regardless of data type)
None
See table for aaaa
definitions
1
Set Protocol
Command Request Data
Packet (ASCII)
Stereo
Response
Data Packet
Data Range Comments
Inputs (1-7)
Set input ii to
Main Left Level
Set input ii to
Main Right Level
Set input ii to
Zone Left Level
Set input ii to
Zone Right Level
Mute channel
fader to Main
Unmute channel
fader to Main
Mute Zone 000101ii0680dd( None
Unmute Zone 000001ii0680dd( None
Gang main input
St. Fader
Ungang main
input St. fader
Gang Zone input
St. Fader
Ungang zone
input St. fader
Channel 7 input
Unbalanced
(Stereo)
Channel 7 input
Balanced (Mono)
Enable channel
7 override
functions
Disable channel
7 override
functions
Hold Time
(applies when
Override is
enabled)
Button Close eeee01070<80dd( None See table for eeee
Button Open eeee01070=80dd( None See table for eeee
Enable
Surround Sound
Disable
Surround Sound
aaaa01ii0180dd( None See table for aaaa
definitions
aaaa01ii0280dd( None See table for aaaa
definitions
aaaa01ii0380dd( None See table for aaaa
definitions
aaaa01ii0480dd( None See table for aaaa
definitions
000101ii0580dd( None
000001ii0580dd( None
000101ii0>80dd( None
000001ii0>80dd( None
000101ii0?80dd( None
000001ii0?80dd( None
000001070780dd( None
000101070780dd( None
000101070:80dd( None
000001070:80dd( None
cccc01070;80dd(
000101061080dd( None
000001061080dd( None
None Set in .25 Second
increments from 0
to 63.75 Second
definitions
definitions
ii = “01”Æ Input1
to
ii = “07”Æ Input7
Channel 7 Only
Channel 7 Only
Channel 7 Only
Channel 7 Only
See table for cccc
definitions
Channel 7 Only
button to be
executed when
override input is
grounded (when
Override disabled)
Channel 7 Only
button to be
executed when
override input is
opened (when
Override disabled)
Channel 7 Only
Channel 6 only
Channel 6 only
2
Mic Inputs
ii = “01”Æ Mic1 or
ii = “02”Æ Mic2
(1-2)
Left Main Level
Fader
Right Main Level
Fader
Left Zone Level
Fader
Right Zone Level
Fader
Gang Mic to
Main Faders
Ungang Mic to
Main Faders
Gang Mic to
Zone Faders
Ungang Mic to
Zone Faders
Trim bbbb03ii0580dd( None See table for bbbb
Bass 00bg03ii0680dd( None b = BOOST:
aaaa03ii0180dd( None See table for aaaa
definitions
aaaa03ii0280dd( None See table for aaaa
definitions
aaaa03ii0380dd( None See table for aaaa
definitions
aaaa03ii0480dd( None See table for aaaa
definitions
000103ii1580dd( None
000003ii1580dd( None
000103ii1680dd( None
000003ii1680dd( None
definitions
0=cut
8=boost
<=cut 1 step
>=boost 1 step
g = GAIN (dB):
0 = Flat
1 = 1.023
2 = 1.938
3 = 2.766
4 = 3.522
5 = 4.217
6 = 4.861
7 = 5.460
8 = 6.021
9 = 6.547
: = 7.044
; = 7.513
< = 7.959
= = 8.383
> = 8.787
? = 9.173
This value is set in
3dB increments
The Bass Tone
Control is a LPF with
a fixed corner
frequency of 169 Hz
3
Treble 00bg03ii0780dd( None b = BOOST:
0=cut
8=boost
<=cut 1 step
>=boost 1 step
g = GAIN (dB):
0 = Flat
1 = 1.023
2 = 1.938
3 = 2.766
4 = 3.522
5 = 4.217
6 = 4.861
7 = 5.460
8 = 6.021
9 = 6.547
: = 7.044
; = 7.513
< = 7.959
= = 8.383
> = 8.787
? = 9.173
Mute mic fader
to Main
Unmu te mic
fader to Main
Mute channel
fader to Zone
Unmute channel
fader to Zone
Enable
Phantom Power
Disable
Phantom Power
Enable High
Pass Filter
Disable High
Pass Filter
Enable Mic Main 000103ii0<80dd( None
Disable Mic Main 000003ii0<8 0d d( None
Enable Page
Over Ducking
Disable Page
Over Ducking
Enable Main
Page Over
Ducking
Disable Main
Page Over
Ducking
Enable Zone
Page Over
Ducking
Disable Zone
Page Over
Ducking
000103ii0880dd( None
000003ii0880dd( None
000103ii0980dd( None
000003ii0980dd( None
000103ii0:80dd( None
000003ii0:80dd( None
000103ii0;80dd( None Enable 112 Hz high
000003ii0;80dd( None Disable 112 Hz high
000103ii0>80dd( None Makes Mic Mute
000003ii0>80dd( None Makes Mic Mute
000103ii0?80dd( None Enables Page Over
000003ii0?80dd( None Disables Page Over
000103ii1080dd( None Enables Page Over
000003ii1080dd( None Disables Page Over
The Treble Tone
Control is a HPF
with a fixed corner
frequency of 6.025
KHz
pass filter
pass filter
input trigger page
over ducking
input behave like a
logic input
Ducking of the Main
program
Ducking of the Main
program
Ducking of the Zone
program
Ducking of the Zone
program
4
Enable Gated
Mic Operation
Disable Gated
Mic Operation
Mute Hold Time cccc03ii1280dd(
Mute Button
Close
Mute Button
Open
Enable EQ 000003ii1780dd( None
Bypass EQ 000103ii1780dd( None
Enable Mic Zone 000103ii1880dd( None
Disable Mic
Zone
Stereo
000103ii1180dd( None Enables gated
000003ii1180dd( None Disables gated
None Set in .25 Second
eeee03ii1380dd( None See table for eeee
eeee03ii1480dd( None See table for eeee
000003ii1880dd( None
increments from 0
to 63.75 Seconds
definitions
definitions
Outputs
Left Output
Fader Level
Right Output
Fader Level
Stereo Output
Mono-off
Stereo Output
Mono-on
Mute Stereo
Output fader
Unmute Stereo
Output fader
Gang Output
Faders
Ungang Output
faders
EQ Bypass 000104ii0580dd( None
Enable EQ 000004ii0580dd( None
No Mic Priority 000004ii0680dd( None
Mic 1 Priority 000104ii0680dd( None
Mic 2 Priority 000204ii0680dd( None
aaaa04ii0180dd( None See table for aaaa
aaaa04ii0280dd( None See table for aaaa
000004ii0380dd( None
000104ii0380dd( None
000104ii0480dd( None
000004ii0480dd( None
000104ii1180dd( None
000004ii1180dd( None
operation of the Mic
when Page Over
Ducking is enabled
operation of the Mic
when Page Over
Ducking is enabled
See Table for cccc
definitions.
Macro executed
upon Mic Mute input
grounding
Macro executed
upon Mic Mute input
opening
ii = “01”Æ Main or
ii = “02”Æ Zone
ii = “03”Æ Aux
definitions
definitions
5
Bass 00bg04ii0780dd( None b = BOOST:
0=cut
8=boost
<=cut 1 step
>=boost 1 step
g = GAIN (dB):
0 = Flat
1 = 1.023
2 = 1.938
3 = 2.766
4 = 3.522
5 = 4.217
6 = 4.861
7 = 5.460
8 = 6.021
9 = 6.547
: = 7.044
; = 7.513
< = 7.959
= = 8.383
> = 8.787
? = 9.173
Mid Range 00bg04ii0880dd( None b = BOOST:
0=cut
8=boost
<=cut 1 step
>=boost 1 step
g = GAIN (dB):
0 = Flat
1 = 1.023
2 = 1.938
3 = 2.766
4 = 3.522
5 = 4.217
6 = 4.861
7 = 5.460
8 = 6.021
9 = 6.547
: = 7.044
; = 7.513
< = 7.959
= = 8.383
> = 8.787
? = 9.173
The Bass Tone
Control is a LPF with
a fixed corner
frequency of 113 Hz
Note: When using
Boost or Cut in 1dB
steps, set ‘g’ or gain
to 0.
The Mid Range
Tone Control is a
BPF with a variable
center frequency
(See “Mid Range
Frequency”)
Note: When using
Boost or Cut in 1dB
steps, set ‘g’ or gain
to 0.
6
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