Technical data

12 Agilent U1251B/U1252B User’s and Service Guide
1 Getting Started Tutorial
The secondary display signs are described below.
The analog bar graph is like the needle on an analog meter,
except without the overshoot being displayed. When
measuring peak on null adjustments and viewing
fast- changing inputs, the bar graph provides a useful
indication because it has faster update rates for fast
response application.
The bar graph is not used for square wave output, frequency,
duty cycle, pulse width, 4–20 mA% scale, 0–20 mA% scale
and temperature measurements. When frequency, duty cycle
and pulse width are indicated on the primary display during
voltage or current measurement, the bar graph represents
the voltage or current value. When 4–20 mA% scale or 0–20
mA% scale is indicated on the primary display, the bar
graph represents the current value.
LCD Sign Description
AC + DC
DC
AC
Polarity, digits and decimal points for secondary display
kHz Frequency units: Hz, kHz
No ambient temperature compensation, just thermocouple measurement
ºC Celsius ambient temperature unit
ºF Fahrenheit ambient temperature unit
mV Voltage units: mV, V
µmA
Current units:
µA, mA, A
s Elapsed time unit: s (second) for Dynamic Recording and 1 ms Peak Hold modes