RAD Data comm ASMi-31 Manuel D’Utilisation

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Controls and Indicators
3-1
Chapter 3
Operation
This chapter provides the following information for the ASMi-31 standalone
modem:
• 
ASMi-31 front-panel indicators and controls
• 
Operating procedures (turn-on, front-panel indications, performance
monitoring and turn-off).
Installation procedures given in Chapter 2 must be completed and checked
before attempting to operate ASMi-31.
3.1   Controls and Indicators
Figure 3-1 illustrates the ASMi-31 standalone modem front panel. Table 3-1
lists the functions of the controls and indicators.
PWR RTS
TD
RD
DCD LOS ERR TEST
RESET
  Figure 3-1  ASMi-31 Front Panel
Note
In ASMi-31 modem/X.21 RTS LED is equivalent to Control signal (C), and
DCD LED is equivalent to Indication signal (I).
Table 3-1  Front Panel Controls and Indicators
Name
Type
ITU Circuit
Function
RESET
Button
This switch resets the unit; it is used in place of a power switch.
It is not needed for normal operation.
PWR
Green LED
On when ASMi-31 is powered up.
RTS
Yellow LED
105
On when the DTE has emitted an active Request to Send signal
(or Control in X.21).
TD
Yellow LED
103
On when a steady space is being transmitted.
Blinks when data is transmitted.
RD
Yellow LED
104
On when a steady space is being received.
Blinks when data is received.
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