QSC CM16a Hardware Manual - page 20
20
CONTROL ROOM FOLDBACK MONITORING
Signal monitoring buses (per CM16)
1
Number of Channels
4
Internal signal tap points
Pre-fader input signal
16
Post-fader input signal
16
Power amplifier output
16
Monitor input
Mixed with tap point signal at unity gain
Nominal level
+4 dBu
Maximum level
+21 dBu
Input impedance
10 kOhm balanced
Configuration
Electronically balanced, shield connected to chassis
Common-mode rejection
Typical, >50 dB, 20 Hz - 20 kHz, worst case, >40 dB, 20 Hz-20kHz
Output
Sum of Monitor input and signal from internal monitor tap point
Frequency response
25 Hz–20 kHz ±0.5 dB
Distortion
<0.05% THD @ +4 dBu out
Noise floor
-90.5 dB
Nominal level
+4 dBu
Maximum level
+21 dBu
Output impedance
75 Ohms balanced
Output load
600 Ohms minimum
Configuration
Active balanced
Level
Adjusts amplitude of signal from tap point
Monitor in to monitor out
0 dB, ±0.5 dB
Control range
-95.5 to 0 dB in 0.5 dB steps
CONTACT CLOSURE INPUTS AND OUTPUTS
Inputs
1 discrete input (RLY/TRG IN)
Configuration
Single-ended input
Resistance for closure detect
<1kOhm max
Resistance for open detect
>5 kOhm min
Input Voltage Limit
7.000 VDC maximum
NOTE!
“-” input terminal connected to chassis
Output
1 discrete output (RLY OUT)
Configuration
Electromechanical relay, dry contacts, floating, C, NC, NO
Steady-state current (max.)
0.5 A
Switched current (max.)
0.25 A
Ground isolation
70 volts maximum
Connector
“Phoenix-style” (a.k.a.“Euro-style”) detachable terminal block connectors
NETWORK INTERFACE, 10BASE-T
Physical network
Ethernet, IEEE 802.3 compliant
Raw data rate
10 megabits per second
Frame format
D.I.X. (Ethernet)
Connector
RJ-45 female
Ethernet type
10BASE-T
Cable type
CAT-3 (or better) twisted pair
Max cable length
100 m to hub
Grounding
Floating
Factory IP Address
Supplied on front-panel sticker as shipped from factory
Transport network
TCP/IP
Internetwork protocol
IP
Transport protocol
UDP
Application protocol
QSC24
Version
1
Revision
7
Network fail-safe
If network connection to the CM16a is lost, operation will continue uninterrupted
RS232 PORT
Cable Type
Null-Modem (such as “Laplink”)
Port Settings
Bits per Second 9600, Data Bits 8, Parity none, Stop Bits 1, Flow Control Xon/Xoff
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE