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77
Configuring the 56/64 kbit data
communication modules
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For the co-directional operation the transmission rate of the transmitted signal must be
set.This setting, 56 or 64 kbit/s, is done on the HMI under:
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For X.21 and contra-directional operation no settings are available.
For the signals used by the protection, the communication module for V.36 also fulfils
the older recommendation for V.35.
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No setting is available for the G.703 modem on the HMI. There are however some set-
tings that can be made on a DIP-switch located behind the cover around the line con-
nector at the back of the terminal according to
figure 39
. After the connector has been
disconnected, if attached, the cover plate can be removed just by pulling at the middle
of the cover plate. No settings are located on the circuit board.
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A
Designations of terminals according to ITU (CCITT), EIA etc.
B
Designations of terminals according to ITU (CCITT), EIA etc.
DCE
Data communication equipment (= multiplexer, etc.)
DTE
Data terminal equipment (= protection)
DTE READY
Data terminal ready (follows auxiliary voltage)
GND
Earth (reference for signals)
RCLK
Receiver signal timing
REQ SEND
Request to send (follows auxiliary voltage)
RXD
Received data
SCREEN
Connection of cable screen
TCLK DCE
Transmitter signal timing from DCE
TCLK DTE
Transmitter signal timing from DTE
TXD
Transmitter data
Содержание 500 Series
Страница 6: ... RQWHQWV ...
Страница 32: ...26 Mounting methods and mounting details KDSWHU 7HUPLQDO GLPHQVLRQV DQG PRXQWLQJ DOWHUQDWLYHV ...
Страница 46: ...40 Test switch modules for RED 521 KDSWHU 7HUPLQDOV ZLWK D WHVW VZLWFK PRGXOH ...
Страница 72: ...66 Making the electrical connections KDSWHU OHFWULFDO FRQQHFWLRQV ...