Keithley 708B Reference Manual page 19

Section 1: Introduction
Before removing or installing switching cards, make sure you turn off the Model 707B or 708B
and disconnect the line cord. Also, remove any other external power connected to the
instrument or switching cards.
Failure to disconnect power before removing or installing switching cards may result in
personal injury or death due to electric shock.
1-2
Models 707B and 708B Switching Matrix Reference Manual
WARNING
707B-901-01 Rev. A / August 2010