Operating Modes and Character Recognition
6NH7811-0AA22 © Siemens AG 2002 All Rights Reserved
4-12 MD2 Modem (07/2002)
The following illustration shows the setting on the 10-pin DIL switch of the MD2 for
the "Test f
L
" operating mode.
Fig. 4-7 DIL switch setting for the
"Test f
L
" operating mode
Note
In order to obtain a complete overview of the quality of the 2-wire or 4-wire
dedicated line, you should carry out tests in both the "Test f
L
" and the "Test f
H
"
operating modes. This way it is sure that both keying frequencies for the selected
baud rate are received at the opposite end of the dedicated line being tested,
thereby ensuring error-free data transmission.
Hinweis
Test operating mode "Test f
L
" is not suitable for measuring the level over the
dedicated line. Use operating mode "Test f
H constant
" for making exact
measurements of the level.
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