Amprobe AM91RS Digital-Multimeter - Manual (Page 13)

12
µµ A, mA, and A Current functions
Default at DC. Press SELECT button momentarily to select AC. Press SELECT button
momentarily again to select AC + Hz. A will be selected automatically when the correct
input jack is plugged in.
Note:
When measuring a 3-phase system, special attention should be taken to the phase to
phase voltage which is significantly higher than the phase to earth voltage. To avoid
exceeding the voltage rating of the protection fuse(s) accidentally, always consider the
phase to phase voltage as the working voltage for the protection fuse(s).
RS232C PC computer interface capabilities
The instrument equips with an optical isolated interface port at the meter back for data
communication. PC interface kit (RS232C optical adapter cable + RS232C software
floppies) is required to connect the meter to the PC computer. The RS232C Data
Recording System software equips with a digital meter, an analog meter, a comparator
meter, and a Data Graphical recorder display. Refer to the README file in the interface
kit for further details.