User manual

1Getting Started
2 U3401A Quick Start Guide
The Display at a Glance
Figure 1-1 VFD full display with all segments illuminated
The highly visible vacuum fluorescent display (VFD) annunciators are
described in the following table:
Annunciator Description
Primary display
S Reading rate: Slow. Not applicable for the U3401A.
M Reading rate: Medium. Not applicable for the U3401A.
F Reading rate: Fast. Not applicable for the U3401A.
PEAK Peak measurement. Not applicable for the U3401A.
HOLD Data hold
MIN MinMax math operation: Minimum value shown on the primary display
MAX MinMax math operation: Maximum value shown on the primary display
REL Relative value
dBm Decibel unit relative to 1 mW
4 2 W 4-wire/2-wire resistance. Not applicable for the U3401A.
Diode test
Audible continuity test for resistance
AUTO Autoranging
DC Direct current
AC Alternating current
DCAC AC + DC
Polarity, digits, and decimal points for primary display
°C Celcius temperature unit. Not applicable for the U3401A.
°F Fahrenheit temperature unit. Not applicable for the U3401A.
mV Voltage unit: mV, V