RAD Data comm operation manual ASM-20 Strap Selection Settings

ASM-20Installation and Operation ManualChapter 2. Installation and Setup

Table 2-1 ASM-20 Strap Selection Settings

Jumper and	Function	Possible	Factory
Switch Identity		Settings	Setting
J1	Prevents activation of remote V.54 loops.	EN	EN
V54 DIS		DIS
J2	Selects the transmit carrier mode. When ON,	ON	ON
CARRIER	transmit carrier is constantly ON. When CNTRL,	CNTRL
	transmit carrier is ON only when RTS is High. In
	X.21, RTS is replaced by the CONTROL signal.
J3	Selects the transmit timing signal from either:	INT	INT
XMT CLK	internal clock, external clock or receive clock and	EXT
	enables working in Asynchronous mode.	RCV
		ASY
J4	Selects the delay between RTS and CTS.	0
RTS-CTS		9	9 msec
DLY (ms)		70
J6	Enables activation of DIG, ANA and REM	ON	ON
SW. EN.	loopbacks via the front panel push buttons.	OFF
J7	Enables Remote Loopback command from the	EN	EN
RLB DTE	DTE.	DIS
J8	Enables Analog Loopback command from the	EN	EN
ALB DTE	DTE.	DIS
J9	Selects the receiver sensitivity level required.	LOW	LOW
RCV LVL		HIGH
J10	Selects receive line impedance.	150Ω	150 Ω
RCV IMP		HIGH
J11	Enables the Remote Power Failure feature.	ON	ON
RPF*		OFF
J12	Selects the transmit output level to the line.	0 dBm	0 dBm
XMT LVL		-6 dBm
J13	Selects the transmit line impedance.	150Ω	150Ω
XMT IMP		LOW
J14	The CON setting connects Signal Ground to	DIS
CHASS	Chassis Ground. The DIS setting disconnects	CON	CON
	them.

*Only for standalone option

Electrical Installation 2-5