Installation manual

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Terminal Block Definition
The four-screw terminal block has different definitions in different operation modes.
)NTHE$#%$4%MODETHETERMINAL6AND6ARECONFIGUREDTOTRANSMITDATA
THETRANSMITTERTHETERMINAL6AND6ARECONFIGUREDTORECEIVEDATA
the receiver,
In the monitor mode, the terminals #1 and #2 are respectively the positive and negative
of receiver #1; the terminal #3 and #4 are the positive and negative of receiver #2.
Self Test
To test the internal circuit of the interface converter, connect a loop-back terminal to the
unit and process as follows:
3ET37TO$#%IFTHELOOPBACKTERMINALISA$4%CONFIGURATION
3ET37TO4X/.2X/.
#ONNECTONEWIREFROM4XTO2XANDCONNECTANOTHERWIREFROM4X
 TO2X
3ETTHETERMINALTOFULLDUPLEXANDENTERDATATHENTHEDATASHOULDBEDISPLAYEDON
the screen.
5. If this occurs, the internal circuit is operational.
Pin #1 DCE/DTE Monitor
1 Transmitter + V Receiver #1 + V
2 Transmitter - V Receiver #1 - V
3 Receiver - V Receiver #2 - V
4 Receiver + V Receiver #2 + V