Amprobe 38XR-A User Manual page 26

To exit the Relative Mode, Press and hold the REL button
for 2 seconds.
HOLD Measurements
The HOLD button causes the meter to capture and
continuously display a measurement reading. To use the HOLD
feature make a measurement, and then, after the reading
has stabilized, momentarily press the HOLD button. You can
remove the test leads and the reading will remain on the
display. Pressing the HOLD button again releases the display.
RS232 Download Software (38SW)
The 38XR-A includes an RS232 IR communication port for
downloading measurement data (value, function, and
range) to a PC. The 38SW Accessory Kit (software and
cable) povides a graphical user interface for the PC to
collect, store, and display measurement data.
Backlight
Pressing the m button illuminates the display with a
blue backlight. Pressing the m button again will turn
off the backlight. When turned on the backlight will
automatically turn off in about 60 seconds. Frequent use
of the backlight will noticeably decrease battery life.
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