Radio Interface
User Interface
7
SRL-35 Operator’s Manual P/N: 1003224-01
•
RTS
=
R
equest
T
o
S
end.
•
MODE
=
operational mode. When the MODE-line is connected to ground (GND), the radio modem
enters the Programming Mode, which is used to change the settings of the radio modem (i.e.
configuration, set-up). If the MODE-line is not connected, the radio modem will enter the Data
Transfer Mode, in which data can be transmitted and received. The Programming Mode is used only
when installing a radio modem and changing the operational parameters of a network. Normally the
radio modem is always in the Data Transfer Mode.
•
GND
=
both the negative pole of the operating voltage and the signal ground.
User Interface
LED Indicators
There are five (5) LED indicators on the front panel of the radio modem, and they give an indication of the
status of the serial port and the radio interface.
Display and Push Buttons
The SRL-35 includes a LCD Display with a backlight. In the Data Transfer Mode the display will show the
operating settings of the radio modem, for example the radio field strength and the supply voltage. By
using the push buttons and the LCD Display, it is possible to change most of the settings of the radio
modem, without the need for an external terminal. The display backlight illuminates automatically as soon
as a button is pressed.
The radio modem will shift into the Programming Mode by pressing the
SETUP
button (
■
). When activated
the menu shows a listing of the changeable parameters.
With the help of the main menu, sub-menus can be selected which in turn can be used to change the
settings. You can always return to the previous higher level of the menu structure by pressing the
CANCEL
(or BACK) push buon (●). Pressing the 5 or 6 buon changes sengs or moves in the menu. Selecons
are confirmed by pressing the
SELECT
or
SET
button. In case of numerical values the digit to be changed is
selected by pressing the
NEXT
button (see following page).
SRL-35 LCD Display After Power-up
The display shows the basic information which is revolving automatically in 5 seconds.
Table 9. Description of the LED-indicators
LED Indication OFF Red Orange Green
RTS RTS-line status Inactive Active
CTS CTS-line status Inactive Active
TX TX-line status No data Data Test TX ac tive
RX RX-line status No data Data
CD Radio status No signal Transmission Noise Reception
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