Polycom SoundStructure C16 Design Manual page 523

the ambient temperature and airflow in the system should be checked. Red indicates an over-temperature
event that must be corrected for proper operation of the SoundStructure device.
Operating Temperature Ranges for Thermal Sensors on SoundStructure Devices
Sensor Normal (Green)
° C
1 50
° C
2 69
° C
3 53
Inputs
● Phantom power: 48 V DC through 6.8 kOhm series resistor per leg, 7.5 mA per channel, software
selectable
● Analog input gain: -20 to 64 dB on all inputs in 0.5 dB steps, software adjustable
● Maximum input amplitude: +20.4 dBu, 1% THD + N
● Nominal level: 0 dBu (0.775 Vrms)
● Equivalent input noise: <-122 dBu, 20-20,000 Hz, Rs=150 Ohms (1%)
● Input impedance: 10 kOhms
● Input EMI Filter: Pi filter on all audio inputs
Outputs
● Output gain: -100 to 20 dB in 1 dB steps, software adjustable
● Maximum output amplitude: +23 dBu, 1% THD + N
● Nominal output level: 0 dBu (0.775 Vrms)
● Output impedance: 50 Ohm, each leg to ground, designed to drive loads > 600 Ohms
● Output EMI filter: Pi filter on all audio outputs
System
Note: All Values Valid for All Channels
Unless noted, all values are valid for all channels at 0 dB input gain.
● Frequency response: 20-22,000 Hz, + 0.1 /- 0.3 dB
● Idle channel noise: <-109 dB FS no weighting, 20-20,000 Hz, -60 dB FS, 997 Hz input signal, 0 dB
gain
● Dynamic range: >109 dB FS no weighting, 20 - 20,000 Hz, -60 dB FS, 997 Hz input signal, 0 dB gain
● Linearity: 0 dB FS to -122 dB FS +/- 1 dB
● THD+N: < 0.005%, -20 dB FS input signal
● Common mode rejection ratio: <-61 dB, 20-20,000 Hz, no weighting
● Cross talk: <-110 dB, 20-20,000 Hz, 1 kHz, channel-to-channel
Polycom, Inc.
Warning (Yellow) Error (Red)
° C
59 60+
° C
79 80+
° C
58 59+
° C
° C
° C
523