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MPD has three status indicators and analog A/V output interfaces on the front panel, and various
interfaces on the rear panel. There are power switch, power/standby, TS and Lock indication LEDs and
analog A/V output interfaces of channel 1 on the front panel. There is a pair of DVB ASI interfaces on the
rear panel for receiving MPEG-2 TS and loop back. The rear panel provides analog A/V output interfaces of
channel 2 and digital A/V interface. RS232 interface on the rear panel is for upgrading micro-code and
sending out test signal comprised 27 MHz clock and h/v sync. . All kinds of local control and operation can
be executed through RS232 or USB interface.
3.2 Operating Instructions – local
For single-program Transport Streams (TSs), like those that are typically output from GMS’ Wireless
Audio/Video Links, the Messenger Portable Decoder (MPD) is a plug & play device. It will automatically
select and decode any compliant compressed Video or Audio and provide uncompressed outputs. With
the OSD function turned-off, the user can monitor status via the MPD’s Front Panel LEDs. With the OSD
function turned on, the video output provides additional information on the incoming stream. See Section
3.2.2. The OSD function and all other MPD controls can be controlled using the MPD M.S. Windows
Control Panel Software. See Section 4.
3.2.1 Standalone Operation without OSD
Before activating MPD, please carefully check all the cable connections and ensure that the appropriate
power supply voltage (+12 VDC) is applied to the unit. Connection between RS232 or USB interface and
PC is not necessary, which is generally used when micro-code is to be updated and operational parameters
need to be set by remote control application.
Once power is on, MPD begins its self-examination and initialization, which may take a few seconds. At
this time, the monitor displays blue screen. It is normal even if the screen jitters a little. As initialization and
self-examination finish, MPD will setup initial parameters from flash and check the status of ASI input port.
Should relevant unit and TS parameter setting turn out correct, both image and sound will be shown.
Otherwise, black screen appears and the MPDs PID analysis operations will be run until a properly
formatted TS is supplied to the MPD’s ASI input
3.2.2 Standalone Operation with OSD
Before activating MPD, please carefully check all the cable connections and ensure that the appropriate
power supply voltage (+12 VDC) is applied to the unit. Connection between RS232 or USB interface and
PC is not necessary, which is generally used when micro-code is to be updated and operational parameters
need to be set by remote control application.
The MPD has a clear-cut and automatic OSD display. Users will easily find out operation information
according to the decoder.
OSD Screen structure is given as:
PROGRAM 01/03 Table Tennis
TS Lock ! MP @ ML SAMP 44100 SPS PAL
PID VID: 0x006F A1: 0x0070 A2: 0x1FFF
