Users manual
ET1260B and ET1260A
6 1/2 Digit Multimeter
26
Input resistance setting is stored in volatile memory, and after cutting off power or resetting
remote interface, multimeter will reelect 10Ω (including all the DC voltage shifts).
Front panel operation: After starting DC voltage measurement function, press
, then
the softkey of Impedance (
), and
and
to input resistance, and then press
key. Default value is 10MΩ.
3.1.4 Resolution
Resolution is expressed by digits which can be measured or displayed by multimeter, which can
be set as 4, 5 or 6 integrated digits, and add [1/2] single units represented by [0] or [1]. If it is
expected to increase measurement accuracy or control noise, please select 6 1/2 digits, while to
increase measurement speed, please select 4 1/2 digits.
Resolution setting is suitable for all the measurement functions. Resolution of math operation
(zero-digit value, limits, dB, dBm and limit test) is the same as that of measurement function.
Corresponding relation between resolution digit and integral time (within power period) is as
follows:
Resolution
Integral Time
High speed 4 1/2
0.02 PLC
Low speed 4 1/2
0.1PLC
High speed 5 1/2
0.2PLC
Low speed 5 1/2
1PLC
High speed 6 1/2
2PLC
Mid speed 6 1/2
10PLC
Low speed 6 1/2
100PLC
Resolution is stored in volatile memory, and after cutting off power or resetting remote
interface, multimeter will set resolutions of all the measurement functions as mid speed 6
1/2.
During DC continuity and diode test, resolution is fixed as high speed 5 1/2.
During DC and resistance measurement, change of resolution digit number does not only
change multimeter resolution, but also integral time, namely, during one certain
measurement, input signal period in sampling of simulation/digit converter (A/D Converter)
on multimeter. Meanwhile, please refer to the chapter of [Integral Time].
During AC measurement, actually resolutions are all fixed as 6 1/2 digits.
During ratio measurement, resolution refers to the resolution of receiving signals at input
terminal.
During front panel operation, there are two methods to change resolution.
1. During measurement function, keys of
and
can change resolution.
2. After pressing
, press the softkey of Integral (
), select different integral times through
keys of
and , and then press
.
