Date printed: 24.01.12
55
D21m System
S2.4
S2.4
PCM Latency (Module 1 only)
OFF
PCM signal is delayed by 1 video frame
(factory default)
ON
PCM signal is minimally delayed
Decoding a Dolby
®
E stream always causes a delay of one video frame. In
case a regular PCM signal is fed to the card, this can be delayed by one video
frame, too. If required, this delay may be de-activated in order to pass through
a PCM signal with a minimal delay. The front panel VIDEO IN sync input
is used to detect video frames in order to delay the PCM signal accordingly.
The video sync input does not necessarily have to be connected in case of
Dolby
®
E , since the sync is indicated within the Dolby
®
E stream.
S2.5
S2.5
Module 1 Pulldown Mode
OFF
Pulldown mode is off
(factory default)
ON
Pulldown mode is on
Pulldown mode ON allows the input of audio signals with a ‘drop frame’
sampling rate of 47.952 kHz instead of 48 kHz. The output, however, always
runs at 48 kHz.
S2.6
S2.6
Module 1 Configuration Download
OFF
Standard operation
(factory default)
ON
Configuration download via RS232
If firmware download to decoder module 1 is required, plug the short flat
cable (W1) coming from the
METADATA OUT
front-panel socket to the
PCB socket P5 (labeled UPDATE1).
The pin assignment of the
METADATA OUT
socket
(9pin D-type, female, UNC
4-40 thread)
in this case is as follows:
1
5
9
6
Solder/Crimp View
(or Socket View)
Pin Signal
Pin Signal
1 n.c.
6 n.c.
2 DOUT_1
7 n.c.
3 DIN_1
8 n.c.
4 n.c.
9 n.c.
5 n.c.
S2.7
S2.7
Module 2 Installed
OFF
No
(factory default if not installed, i.e., for A949.0443)
ON
Yes
(factory default if installed, i.e., for A949.0444)
S2.8
S2.8
Video Termination
OFF
Hi-Z
(factory default)
ON
75
Ω
S1.1 - S1.3
S1.1
S1.2
S1.3
Module 2* Input Select
x
x
OFF
Automatic source selection
(factory default: All OFF)
OFF
OFF
ON
Front port main
OFF
ON
ON
Front port PCM delay
ON
OFF
ON
Rear (backplane) main
ON
ON
ON
Rear (backplane) PCM delay
*
if installed
