Black Box ME445C-530 manual Configuring the Standalone or Card Version, User-configurable options

CHAPTER 3: Configuration

3.3 Configuring the Standalone or Card Version

Before attaching anything to the 256-kbps Line Driver standalone or rackmount card version, determine which data rate you’re going to use, what the system’s clock source should be, and how you want to set all of the other user-configurable options on the line driver. (Refer to Table 3-1 on the next two pages for a list of all of these options; the SWn and Jn numbers in the table’s “Element” column correspond to the locations with the same numbers in Figure 3-1.)

Table 3-1. User-configurable options.

Element	Function	Possible	Standard
		Settings	Factory
			Setting
SW3	Select the data rate in kilobits per second.	Opt. 1
BAUD RATE		0-256
dial		1-192
		2-144
		3-128
		4-115.2*
		5-112
		6-96
		7-72
		8-64	64 kbps
		9-57.6*
		A-56
		B-48
		C-38.4*
		D-32
		E-28.8
		F-19.2*
		*Async/
		sync baud
		rate
J1	Enable or disable requests for V.54 digital	DIS
V54 DIS	loopback tests from the remote line driver.	EN	EN (enabled)
jumper
J2	Select the transmit-carrier mode. When you	CNTRL
CARRIER	set this jumper to “ON,” transmit carrier is	ON	ON
jumper	constantly ON. When you set this jumper to
	jumper to “CNTRL,” transmit carrier is ON only
	when RTS is high.
	Use the CNTRL setting for multipoint
	applications.
J3	Select the source of the transmit timing signal:	INT	INT (Internal)
XMT CLK	internal clock, external clock (from DTE), or	EXT
jumper	receive clock (from remote unit). Do not select	RCV
	the ASY (asynchronous, no clock) setting.	ASY
SW2	(This switch only comes into play when ASY
Data-format	[asynchronous] is selected on jumper J3. ASY
DIP switch	should never be selected on this unit, so the
	settings of this switch are irrelevant.)

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