PCB LINKS

Links enable various options on the TDS9092. The left column shows the option set on shipment. The links E F G V W X Y Z are push-on jumpers. Links A B C and D are solder links set on manufacture and should not need altering. To change a soldered link use a clean desoldering tool that will not spray particles of solder around, or apply a solder blob if the link is unmade. Use a very fine-tipped soldering iron. Connections on delivery are marked * .

Default	Function	Links made	Links open

*	Protective diode fitted		A
	No protective diode for lower input voltage	A

*	32K RAM (62256) in 28-pin socket	F W Y	E G X Z
	16K RAM (62256) in 28-pin socket	E W Y	F G X Z
	8K RAM (6264) in 28-pin socket	E W Z	F G X Y
	32K PROM (27C256) in 28-pin socket	E G Y	F W X Z
	16K PROM (27C128) in 28-pin socket	E X Y	F G W Z
	8K PROM (27C64) in 28-pin socket	E X Z	F G W Y

*	+5V output from regulator	D
	Lower voltage, see CIRCUIT DIAGRAM		D

*	32K byte Surface Mount RAM	B	C
	8K byte Surface Mount RAM	C	B
	(these are preset on manufacture)

*	Regulator enabled	V
	TDS9092 in shut-down mode		V

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