Dolby Laboratories DP503 - Manual (Page 33)

4-3
4.3.3 Terminal Adapter Control
This connection is used only in a Dolby Fax installation. See Section 4.5 below.
4.3.4 Remote Control
If you wish to use a PC for remote control of the DP503, connect a standard 9-pin
RS-232 serial cable (not supplied) to J108 Rem/Download.
Remote control operation permits access to the setting of bitstream parameters in
Dolby Digital (AC-3).
Refer to the manual supplied with the remote control software for instructions on
its use.
4.3.5 Status
If required, make Status output connections to the 9-pin D-connector J109 Status.
This connector provides an external monitor for some of the front panel LED status
indicators. Signal levels are 5 volt CMOS (active high), with a 50 ohm output
impedance. The following status indications are available:
Fault Overload Ch A
Test Overload Ch B
Digital In Remote
Lock
Pinout information is provided in Appendix A.
4.4 Power
Read the safety information in Section 1. When you are confident that you have
observed its provisions, connect mains power to the unit at the power connector.
Upon power-up, the DP503 will go through a self-test sequence. Two screens
showing software revision levels will appear; then the default encoder
configuration screen will be displayed.
4.5 Level Calibration (Analog Inputs)
Note: Upon initial power-up, the DP503 is configured with the analog inputs active. If you see that the
Digital LED is illuminated (red or green), sequentially press the Shift and
nn keys. The Digital LED
should extinguish, meaning that the analog inputs are now active. Refer to the front panel figure
located at the end of Section 5 as needed.
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