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DTM-3237B – DVB-S2X Receiver with DVB-ASI Output
User Manual
3.4.4 Control Connector
The pinning of the control connector is shown in the table below. It's a dual row pin header for
2
connecting the I
C control bus, lock indicator and analog signal level.
Pin
1
NC
3
NC
5
NC
7
GND
2
9
I
C SDA
An I
2
C controller can be connected to SDA and SCL on pin 9 and 8/10, with signal ground on pin 7.
3.4.5 Power Connector
The DTM-3237B must be powered from an external source with a voltage of 12V DC. Power
consumption is max. 5W without the LNB power enabled. Two power connectors are available,
connector 6 and 7. Please refer to §3.1- Physical layout for the connector layout. The pinning of these
power connectors is shown below.
Pin
1
+12V DC in
3
Ground
4
Reset
Connector 7 - Molex KK series 2.54 mm
Pin
1
+12V DC in
2
Ground
3
Reset
The board can be reset by pulling the reset pin to ground for at least 100ns. The reset pin is connected
with a resistor to the 12V DC input voltage. When connecting a driver to the reset pin of the
DTM-3237B, make sure it is 12V tolerant. To trigger a reset, the voltage on the reset pin shall be
700mV or less.
Function
Connector 6 – Pin header 2.54 mm pitch
Function
pitch
Function
Pin
2
Analog Signal level
4
Lock indicator
6
NC
2
8
I
C SCL
2
10
I
C SCL
Pin
2
+12V DC in
4
Ground
6
Reset
13
Function
Function
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