Features
The D340 is a simple, low-cost approach to testing type 1 token ring cables for
correct continuity. It’s easy to use, fits easily in your tool kit and will even test
shorting bars. The two-piece design allows users to test cables either before or
after cable installation.
Operation
Your D340 is turned on using the slide switch on the right hand side of the tester.
With nothing connected, all five leds will remain dark. When the unit is first
turned on, the leds will momentarily flash and a beep will be heard as a self-test is
performed. To check shorting bars, simply connect a type 1 cable to the master
unit using either the DE9 or IBM data connector. To test cable continuity, the D340
remote unit must be plugged into the far end of the cable. If the D340’s leds
appear dim or fail to function, simply replace the 9-volt alkaline battery in the rear
of the master unit.
When the D340 tests a cable for continuity, all four wires and the shield are tested
for correct connections. First, a shorting bar test is performed. The shorting bar
lamp will light to indicate that bars were detected and if they’re not seen, then all
of the conductors are checked. The beeper will sound to alert you when an error
has been detected. If the shield is open, the beeper will sound while all leds
remain dark.
led off - means that wire is open.
led on - means that wire (and the shield) are connected.
led flashes - means that wire is shorted to the shield.
Multiple leds flash - means those wires are shorted together.
All leds flash - means that a swap has been detected.
All leds dark - means unconnected or open shield.
Summary of Contents for D340
Page 4: ...Rev 7 25 98...
