Specifications – QSC Audio S series User Manual
Page 31
31
AUDIO BUFFERING
256 samples (5.333 microseconds)
NETWORK
Protocol:
100 Mbps FAST Ethernet (FE)
Configuration:
Network repeaters OR switches
Audio Channel Capability:
64 channels maximum PER repeater LAN, scalable for network switches
Management Protocol:
SNMP (Simple Network Management Protocol)
Auxiliary Feature Support:
Serial data support of RS-232 bridged onto Ethernet
Device upgrade via TFTP
Device configuration via hardware interface OR software interface
Cable Type:
CAT-5 UTP (unshielded twisted pair)
Network Device Delay:
Class II repeater (network hub) <460 nanoseconds
CAT-5 UTP cable ~ 11 nanoseconds per linear meter (round trip)
Multimode fiber optic cable ~ 10 nanoseconds per linear meter (round trip)
Network switch : refer to CobraNet “store & forward” delay specification
SYNCHRONIZATION
Master/Sync Output:
5 volts peak-to peak from 50 ohm BNC connector
Slave/Sync Input:
Use to synchronize network to an external clock source or Slave input for redundant operation
50 ohm BNC connecter
15 kHz. to 49.5 kHz. valid range of input frequency
To enable Sync: front panel hexadecimal switches must be set between 80 and FE hex or
configure via SNMP.
To use as Slave: connect to Master via coax cable Sync, then duplicate hexadecimal switch
settings (see pages 16 and 17).
MISC.
Chassis Power Connector Type:
IEC, fully filtered for RFI and EMI
Fuse:
2 ampere, 250 VAC, 20mm long X 5mm diameter, 2 required
Specifications Subject To Change Without Notice
Specifications
Peak Audio and QSC provide support for audio networks built with repeaters, switches and media converters only.
(QSC support is only available if the network uses QSC CobraNet products such as RAVE.)
Network products distributing CobraNet audio must meet specific timing requirements. Audio distribution via
routers, gateways, protocol bridges, ATM, wireless transceivers, telecom or other WAN products is sometimes
possible, but may prove unreliable and may require custom (contracted) support and some trial and error
experimentation. Further information is available on the Peak Audio website: http://www.peakaudio.com