Polycom Vortex EF2280 User Manual

F01NC*2
Toggle NC state on all microphone input
channels (1-8) .
F01NC*abcdefgh , where the letters (a, b, etc.) are each
0 or 1 depending on the current state of NC for each of
the corresponding input.
F01NC*?
Query NC state on all microphone input
channels (1-8) .
F01NC*abcdefgh , where the letters (a, b, etc.) are each
0 or 1 depending on the current state of NC for each of
the corresponding input.
8.99. NCL -- Set Noise Cancellation Attenuation
This command sets or queries the attenuation level of the Noise Cancellation algorithm on input channels 1-8 .
For example, if NCL is set to 10, then the Noise Cancellation for that channel will cancel 10 dB of noise. Higher
numbers mean more cancellation will be applied, but may result in slight artifacts depending on the
characteristics of the noise. Typical settings are 10 dB for normal cancellation and 6 dB for light cancellation.
This command is a channel integer command. See
Section 6.3 and Section 6.2 for more information on this type
of command. The minimum and maximum values for this command are 0 and 20, respectively.
This command is saved to non-volatile memory only as part of a preset. The state of this command will be
restored after power-up only if a preset is saved and that preset is set to be the power-on preset.
Example Description Status Message
F01NCL13
Set NC attenuation level on input
channel 1 to 3 dB.
F01NCL13
F01NCL1?
Query the NC attenuation level on
input channel 1 .
F01NCL1x , where x is a number between 0 and 20,
depending on the current setting of the NC attenuation
level on input channel 1 .
F01NCL*6
Set NC attenuation level on all
microphone input channels (1-8)
to 6 dB.
F01NCL*èèèèèèèè
F01NCL*ääääìììì
Set NC attenuation level on input
channels 1-4 to 0 dB and NC
attenuation level on input
channels 5-8 to 9 dB.
F01NCL*ääääìììì
F01NCL*?
Query NC attenuation level on all
microphone input channels (1-8) .
F01NCL*abcdefgh, where a-h are each between ä
and ÿ, depending on the current setting of the NC
attenuation level for each of the eight input channels.
8.100. NVINIT -- Reinitialize Non-Volatile Memory
This command reinitializes (or formats) all non-volatile memory settings. This will effectively erase settings for
global settings, user presets, macros, labels, and logic I/O configurations. This will basically reset the unit to a
"fresh-out-of-the-box" state.
When this command is issued, it writes to non-volatile memory in order to format the contents back to the
factory default state. The writing process results in a short delay. After the non-volatile memory has been
reformatted, the Vortex will perform a software reset, which is equivalent to a power cycle.
Example Description Status Message

Polycom Vortex EF2280 Specifications

General

Rack capacity	1U
Frequency range	20 - 20000 Hz
Cancellation span	270 ms
Echo cancellation	65 dB
Phantom power	48 V
Nominal input level	0 dB
Output gain	-100 - 20 dB
Output impedance	33 Ω
Maximum output amplitude	23 dB
RS-232 ports	1
Audio connections	2 x 3.5mm
Parallel ports quantity	2
Input voltage	110 - 240 V
Output current	20 mA
Output voltage	5 V
Input frequency	47/63 Hz
Power consumption (typical)	30 W
Operating temperature (T-T)	0 - 40 °C

Weight and Dimensions

Weight	1800 g
Dimensions (WxDxH)	483 x 244 x 45 mm