Dolby Laboratories CP750, Руководство пользователя

Страница: 19 / 85

CP750 Rear Panel
Dolby
®
CP750 Digital Cinema Processor Manual 7
•
H/I OUT
: RCA jack for hearing impaired output. This is a center ‐ weighted sum of
L ‐ C ‐ R.
•
MIC. GAIN
: For adjusting the gain of the microphone preamp.
•
MIC. INPUT
: 3 ‐ pin female XLR connector for a PA or auditorium equalization
microphone. Phantom power can be applied using the setup software.
•
MAIN AUDIO OUTPUT
: 25 ‐ pin female D ‐ connector balanced audio output to the
auditorium sound system. See Section 8.2.7 for pinout details.
•
MULTI-CHANNEL ANALOG INPUT
: 25 ‐ pin female D ‐ connector carrying eight balanced
analog channels. See Section 8.2.7 for pinout details.
1.3.1 AC Input
This is a simple unswitched IEC power inlet module.
1.3.2 Backup Power Port
This is a four ‐ pin female XLR connector for use with the Cat. No. 994 External Power
Supply.
1.3.3 Ethernet Port
This is an illuminated RJ ‐ 45 10/100 Base ‐ T Ethernet port with activity LEDs, which
provides an interface to a Dolby Digital Cinema network and also ASCII string commands
over TCP to port 61408. You can also use this port for setup software and firmware
upgrades.
1.3.4 RS-232 Serial Port
You can use this port for serial control using ASCII string commands.
The equipment connected to this port should have its serial port set to 9600 baud, no parity,
1 stop bit. Use a pin ‐ to ‐ pin serial cable.
The same control functions are available through the Ethernet port.
1.3.5 Remote Connector
This is not an Ethernet connection, but an Ethernet cable is used to connect to the Cat. No.
868 Remote Fader.
1.3.6 4xAES IN Connector
This 25 ‐ pin female D ‐ connector, linked to the
Digital 1
button, receives four AES/EBU
streams. The four AES input signals must be time aligned with each other. Typically, this
input connects to a Dolby Digital cinema server. It accommodates PCM audio at 96, 48, and
44.1 kHz, and 32 kHz (16, 20, and 24 bits) and Dolby Digital at all data rates and sample
rates. The decoding of Dolby Digital is restricted to the first AES3 channel pair. This
connector has a floating ground.