Crestron cnoxm User Manual
CRESTRON CNOXM
Oxmoor DCA-2 Interface Module
R E M O T E C O N T R O L S Y S T E M S
1
Doc. 8084
Specifications subject to change without notice.
7.95
SYNTAX:
NET.ID < 03 to FE > : CTP-3000
\ CNOXM is represented as a Touchpanel
i1,o1 = <signal name>
\ Up_A Channel A Count Up Input
i2,o2 = <signal name>
\ DOWN_A Channel A Count Down Input
i3,o3 = <signal name>
\ PRE_A Channel A Preset Input
i4,o4 = <signal name>
\ PRI_A Channel A Priority Input
i5,o5 = <signal name>
\ UP_B Channel Count Up Input
i6,o6 = <signal name>
\ DOWN_B Channel B Count Down Input
i7,o7 = <signal name>
\ PRE_B Channel B Preset Input
i8,o8 = <signal name>
\ PRI_B Channel B Priority Input
AI1 = <signal name>
\ VOL_A Channel A analog volume setting to DCA-2
AI2 = <signal name>
\ VOL_B Channel analog volume setting to DCA-2
AN1 = <signal name>
\ VOL_A_FB Ch A analog feedback volume from DCA-2
AN2 = <signal name>
\ VOL_B_FB Ch B analog feedback volume from DCA-2
DESCRIPTION:
The Crestron CNOXM is designed to control the Oxmoor DCA-2 Digital Control Attenuator via CRESNET II. The CNOXM
displays the volume of both DCA-2 channels on Cresnet-II Touchpanels and bargraph displays. The CNOXM may be thought
of as two Oxmoor RC-16 Remote Control Units.
displays the volume of both DCA-2 channels on Cresnet-II Touchpanels and bargraph displays. The CNOXM may be thought
of as two Oxmoor RC-16 Remote Control Units.
The Oxmoor DCA-2 controls two discrete audio channels, A and B. Volume is controlled in 29 steps of 1.5 dB attenuation
from 0 dB to -43.5 dB, with the 30th step for -90 dB "full kill" attenuation. The remote inputs can be "daisy-chained" with
multiple RC-16 Remote Control Units.
from 0 dB to -43.5 dB, with the 30th step for -90 dB "full kill" attenuation. The remote inputs can be "daisy-chained" with
multiple RC-16 Remote Control Units.
The Crestron CNOXM has been designed to take advantage of the unique features of the Oxmoor DCA-2 while remaining
compatible with the standard SIMPL programming conventions used for the CNVCP-3(2) cards. The SIMPL RAMP and
PRESETV analog output signals can drive the CNOXM directly. Note that AV applications may benefit from the standard
MXB scaling of 0 to -30 dB as used with the CNVCP-3(2) cards to limit the volume control range in Presentation settings.
compatible with the standard SIMPL programming conventions used for the CNVCP-3(2) cards. The SIMPL RAMP and
PRESETV analog output signals can drive the CNOXM directly. Note that AV applications may benefit from the standard
MXB scaling of 0 to -30 dB as used with the CNVCP-3(2) cards to limit the volume control range in Presentation settings.
The most eye-catching feature of the CNOXM is the perfect tracking of the DCA-2 volume. The CNOXM reads the volume
feedback signals directly from the DCA-2. Touchpanels and/or bargraphs always indicate the correct volume. Spinning the
knob on an RC-16 connected the CNOXM/DCA-2 ramps the CRESNET II bargraphs in perfect synchronization with the RC-
16 LED's. Changing the volume on one unit updates the displays on all units, be it RC-16's or CNOXM's.
feedback signals directly from the DCA-2. Touchpanels and/or bargraphs always indicate the correct volume. Spinning the
knob on an RC-16 connected the CNOXM/DCA-2 ramps the CRESNET II bargraphs in perfect synchronization with the RC-
16 LED's. Changing the volume on one unit updates the displays on all units, be it RC-16's or CNOXM's.
Additional features are the "Preset" and "Priority" attenuation levels. The levels for both channels are set on the rear panel.
"Preset" is the volume the DCA-2 is set to when it is powered-up and can be recalled at any time. Either or both channels
may be recalled to the "Preset" level by momentarily asserting the "Preset" signal inputs. "Priority" is a temporary setting
that can be used for paging functions. The volume will return to the previous level after the "Priority" signal input is de-
asserted.
"Preset" is the volume the DCA-2 is set to when it is powered-up and can be recalled at any time. Either or both channels
may be recalled to the "Preset" level by momentarily asserting the "Preset" signal inputs. "Priority" is a temporary setting
that can be used for paging functions. The volume will return to the previous level after the "Priority" signal input is de-
asserted.