RAD Data comm ASMi-31 operation manual LLB, JP15

ASMi-31Installation and Operation ManualChapter 2. Installation and Setup

Table 2-1 ASMi-31 Internal Jumpers and Switches (Cont.)

Item	Jumper	Description	Values		Default Setting
3	LLB, JP15	Controls the local loopback	DIS – The LLB activation from		DIS
		activation from the DTE	the DTE is disabled
			EN – The LLB activation from
			the DTE is enabled
4	CLOCK	Controls the ASMi-31 timing	LBT – Loopback timing, clock is		LBT
		reference	recovered from the data at the
			line side
			INT – Internal clock
			EXT – External clock
5	SW7	Selects the data rate	1	– 1.2 kbps, sync/async
			2	– 2.4 kbps, sync/async
			3	– 4.8 kbps, sync/async
			4	– 9.6 kbps, sync/async
			5	– 19.2 kbps, sync/async
			6	– 38.4 kbps, sync/async
			7	– 48 kbps, sync
			9	– 64 kbps, sync	9 – 64 kbps
			A – 128 kbps, sync
			E – 16 kbps, sync
			F – 32 kbps, sync
5	SW6	DIP switch, which consists of eight section
	Section 1	Controls the ASMi-31 operation	ON – Async operation
		mode – synchronous or	OFF – Sync operation		Sync
		asynchronous
	Section 2	Defines the number of data bits	ON – 8 bits		8 bits
		to be used	OFF – 7 bits
	Section 3	Controls the use of parity	ON – Parity enabled		P.EN
			OFF – Parity disabled
	Section 4	Defines the parity type	ON – Even parity		Even
			OFF – Odd parity
	Section 5	Defines the number of stop bits	ON – One stop bit		1STB
			OFF – Two stop bits

Section 6 Controls the RTS to DCD

transfer

ON – DCD, the DCD signal	DCD
turns on when the two units
reach synchronization
OFF – CNT, the DCD signal of
the local unit follows the RTS
signal of the remote unit

Note: The DCD signal is OFF when a digital loopback is active (receiving RLB command) or when there is no synchronization between the units).

Installation and Setup 2-5

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