Measurement Computing Extender488 - Manual (Page 17)

Section 2 Getting Started
2. 7
2.4 OPERATION
After configuring the Extender488s attaching the serial port or fiber optic cabling, plug the power
supply connector into the rear jack on the interface.
CAUTION
Never install the power s upply into the interface while it is connected to AC line
power. Failure to observe this caution may result in damage to the Extender488.
Only a supply with regulated +5 volt output should be used.
WARNING
The power supply provided with the interface is int ended for INDOOR USE
ONLY. Failure to observe this warning could res ult in equi pment failure,
personal injury or death.
After installing the power s upply connector into the interface, plug the power supply into the AC
line power. Place the rear panel power switch in the ON [1] position. All front panel indicators should
light for a pproximately one second while the Extender488 performs an i nternal ROM and R AM self
check. At the end of the power-on sequence, the ERROR LED should continue to blink, indicating that
communications with another extender has not been established. Now repeat the above procedure with the
second extender, and observe the same results. If any of the following LED conditions exist after power-
on, a failure has occurred.
SYMPTOM FAILURE
All lights remain on ROM test has failed
All lights blink continually RAM test has failed
No LEDs blink Power supply has failed