DekTec DTM-3200 IP-ASI Converter User Manual
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DTM-3200 – OEM Ethernet TSoIP Converter
User Manual
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1.3 ASI-to-TSoIP mode
When configured as ASI-to-TSoIP converter, the DTM-3200 accepts ASI or parallel input. The ASI
input is selected automatically when a signal is available; otherwise the parallel input is used. Key
features include encapsulation of UDP or RTP, controlled scheduling of IP packets to prevent IP jitter
(zero jitter playout), and adding forward error correction (FEC) according to SMPTE 2022-1.
C
o
n
tr
o
l
TSoIP
DVB-ASI
DTM-3200
DVB-SPI
Figure 3. The DTM-3200 configured as ASI-to-IP converter
1.4 Control
The unit can be managed and controlled through one of the available control interfaces: I
2
C or
RS-232/485/422. Settings applied through one of the control interfaces can be stored in non-
volatile memory (if setting Volatile storage is ‘1’) or in volatile memory (if setting Volatile storage is
‘0’) on the unit. Settings stored in non-volatile memory are automatically reloaded after a power
cycle. It is not possible to configure the device via the Ethernet interface.
There are three ways to control the DTM-3200:
1. From a development PC using the serial RS-232 control interface. This way of controlling can
be used for pre-configuring the DTM-3200, or for experimenting with the DTM-3200.
2. Using a controller on-board of the equipment that uses the DTM-3200 for I/O conversion. In
this case I
2
C is a plausible choice, but the other serial interfaces may also be used.
3. Stand-alone mode. The DTM-3200 is pre-configured and no dynamic control is applied.
Two test tools are available:
1. Dtm3200Util – Windows GUI tool to view status and control settings of the DTM-3200. The
tool can also be used to upload firmware. Dtm3200Util is convenient for initial configuration
of the DTM-3237 and for experimentation with the DTM-3200.
2. DtmCmd – Command-line tool to send commands to the DTM-3200. Multiple commands can
be combined in a script to apply a group of settings in one go. DtmCmd is useful for studying
the low-level commands available for the DTM-3200. It is also useful to apply a pre-defined
group of setting values from a script.
1.5 DTM-3200 protocol handler
An open source implementation of a protocol handler for DTM-32xx devices is available from
free of charge. It consists of two source files,
DtmHandler.c
and
DtmHandler.h
, which can be compiled and linked into your C or C++ application. Please refer to
DtmHandler.h
for information about how to use the protocol handler in your application.