Crown IQ-PIP-USP3, Справочное руководство

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IQ-PIP-USP3/CN
page 18
Reference Manual
4.2.3 Input Signal Level Monitor
The input signal level of each channel can be monitored. The measurement range is from
+20dBu to -40dBu with 0.5dBu resolution. Each audio channel has the following monitors:
• CobraNet Audio Input: The audio input level of the selected CobraNet audio channel.
• Analog Audio Input: The audio input at the Balanced Audio Inputs of the USP3/CN's
front panel.
• Switched Audio Input: The audio input after the Input Audio Router.
4.2.4 Output Signal Level Monitor
The output signal level of each channel can be monitored. The measurement range is from
0 dB to –40 dB with 0.5 dB resolution. The monitors are scaled so that 0 dB is referenced to
the full rated output voltage of the amplifier. In Com-Tech
®
amplifiers the scaling can be
changed between the rated 70V output and the rated 8-ohm level. For all other amplifier
models, the scale is set to the rated output level.
4.2.5 Thermal Headroom Level Monitor
The thermal headroom level of each channel can be monitored with the IQ software. This
level represents the percent of available power/thermal capacity that is currently being used
within the output section of the amplifier. When the thermal headroom level reaches 100%,
the amplifier cannot produce any more power and it will begin to protect the output devices
by limiting their drive level. The thermal limiter feature of the IQ-PIP-USP3/CN can be set
to engage at a pre-selected thermal level. (See Section 4.2.17.)
4.2.6 Power/Standby Control
Each channel can be independently turned on and off.
4.2.7 Signal Mute
The output signal of each channel can be independently muted. This function produces 60
dB or more of attenuation.
4.2.8 Polarity Inverter
The input signal polarity of each channel can be independently inverted.
4.2.9 Input Signal Fader
Each input signal can be adjusted under software control. The gain range is +20dB to
–80dB in 0.5dB steps. In addition to adjustment of the post input router signal, each Ana-
log Audio Input has a separate Fader that allows the trim of the Analog Audio Input before
the Input Router.
4.2.10 Input Signal Router
Each channel of the USP3/CN's signal processing has an Input Signal Router that allows
the choice of audio signal that will be used by the channel. The choices are:
• CobraNet Audio: The assigned CobraNet audio as setup in the CobraNet Input sec-
tion of the software. See section 4.1.3 for more details. Choices for the CobraNet Input are
Channel 1, Channel 2, or a sum of Channels 1 and 2.
• Analog Audio: The audio input from the 5 pin barrier block on the front panel of the
USP3/CN. Choices for the Analog Audio input are Channel 1, Channel 2, or a sum of
Channels 1 and 2.