ETIC MR1200, Руководство пользователя

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Configuration
ETIC - MR1200 - USER MANUAL - 908709-02 Page 23
Defines the ASCII control code for the character used to control data transmission in marked automatic
mode (see
chapter 4 ):
mark format
from 0 to 255 BCD * 013
A value of 013 is used to start transmission of a line of characters on reception of the [Cr] (Carriage
Return) control character.
Parameter 015 [error]
When not null, the error parameter determines the code of the ASCII character sent to the terminal
signalling reception over the radio channel of an invalid frame :
error format
from 0 to 255 BCD * 000
000 = used to cancel the signalling of invalid frames
Note: Should interference occur on the radio channel while the modems are synchronising, several
frames may be lost without this fact being signalled to the terminal.
Parameter 016 [ges_dsr]
With this parameter set to 1, the RS232 interface 107-DSR circuit is implemented as per a standard
telephone line modem : 107-DSR is ON during communication (radio channel), and OFF when at rest.
Setting its value to 0 forces 107-DSR to the permanently ON condition.
ges_dsr 107-DSR handling
0 no (permanently ON)
1 * yes (ON in communication)
3.4.2. Configuring the radio interface
Parameter 020 [mod_rad]
Defines the MR1200 data transmission mode :
mod_rad transmission mode
0 simple mode(no CRC)
1 * basic mode (with CRC)
Modem transmission normally operates in basic mode : the data is formatted into frames protected by
the addition of a cyclic redundancy check code (CRC), resulting in a useful radio channel data rate of
900 b/s.
Simple mode should only be used over a good quality radio link (communicating stations relatively
close) and when it is essential to have a useful radio channel data rate greater than 900 b/s. Data is
transmitted with no extra coding and any errors are no longer filtered on reception.
Parameter 021 [tp_alt]