Cronyx E1 - L/S, Руководство по установке и эксплуатации

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Modem-Converter E1-L/S
© 2006 Cronyx
cur at some data rates. There are several ways to solve the problem:
• inverting the transmit clock signal (TXC) at the device connected to the modem;
• changing the length of the cable;
• swapping the TXC-a and TXC-b lines at one of the interface cable connectors;
• setting inversion of the TxC signal.
The same problem may achieve by using external receive clock (ERC) signal. The meth-
ods of the problem solving are the same:
• changing the length of the cable;
• swapping the ERC-a and ERC-b lines at one of the interface cable connectors;
• setting inversion of the ERC signal.
To set the clock signals inversion there are commands as follows:
• «Transmit data strobe» – strobing the data transmitted: «Normal (data valid on fall-
ing edge)» or «Inverted (data valid on rising edge)».
•
«Receive data strobe»
– strobing the data received: «Normal (data valid on falling
edge)» or «Inverted (data valid on rising edge)».
The
«HDLC buffer»
command controls the HDLC buffer operation: «Enabled» or
«Disabled».
Asynchronous Mode
In the asynchronous mode (
«Mode: Async»)
the following parameters should be con-
figured:
...
4. Mode: Async
5. Baud rate: 115200
6. Char format: 8n1
...
Command: _
•
«Baud rate»
: «115200», «57600», «38400», «19200», «9600», «4800», «2400»,
«1200»;
•
«Char format»
– the character transmission format is set by the 3-character abbre-
viation for the parameters as follows:
1) number of data bits;
2) parity bit: «p» - even or odd parity, «n» - no parity;
3) number of stop bits. Possible combinations are as follows: «8n1», «8p1», «7p1».