D21m System
D21m Modules 6-27Date printed: 30.08.07
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 doesn’t 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 frequency of 47.952 kHz instead of 48 kHz. The output, however,
always runs at 48 kHz.
S2.6
S2.6 Module 1 Con guration Download
OFF
Standard operation (factory default)
ON
Con guration download via RS232
If rmware download to decoder module 1 is required, plug the short at
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 (9-pin D-type, female)
in this case is as follows:
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 1.949.443)
ON
Yes (factory default if installed, i.e., for 1.949.444)
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
Same as S2.1 ... S2.3 above, but for module 2 (if installed).
1
5
9
6
Solder/Crimp View
(or Socket View)
