RAD Data comm ASM-20 operation manual Control and Indicator Functions, Name Type Function

Chapter 3. Operation ASM-20Installation and Operation Manual

E

P W R

RT S

TD

D C D

TE S T E R R

R P F

D IG

A N A

PATT

ASM - 20

1

2

3

4

5

7

A

B

C

D

		Figure 3-2 ASM-20R Front Panel
		Table 3-1	Control and Indicator Functions
Item	Name	Type	Function
A	DIG	Pushbutton	The Digital Loopback switch causes the local ASM-20 to loop
			received data and clock back to its transmitter. Data Set Ready
			will turn off (see Figure 4-5).
B	ANA	Pushbutton	The Analog Loopback (V.54 Loop 3) switch causes the local
			ASM-20 to loop its transmitter output back to its receiver (see
			Figure 4-3). This loopback may also be activated from the DTE
			when DTE COMMAND ALB strap is set to EN.
C	REM	Pushbutton	The Remote Digital Loopback (V.54 Loop 2) switch causes the
			remote ASM-20 to loop received data and clock to its
			transmitter (see Figure 4-4). Data Set Ready will turn off. This
			loopback may be also activated from the terminal when DTE
			COMMAND RLB strap is set to RLB EN.
D	PATT	Pushbutton	The PATT switch causes the ASM-20 to send and receive a 511
			test pattern. If errors are encountered,, the ERROR LED is ON
			or blinks. Receive Data and Clear to Send will turn off.

Note: The CARRIER jumper should be set to ON; if set to

CNTRL, the RTS signal must be high.

3-2 Controls and Indicators