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Introduction
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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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