UT3500 series
User Manual
29
5.1.1 [Average] Times
"Average" is one of the most commonly used digital filter, and the "number" is the depth of
the filter. Its purpose is to perform multiply measurements and take the average result as
the final display value, which can improve the stability and reliability of the measurement
results. The range of average times is a positive integer from 1 to 256.
Setting Steps:
1. Press the [Setup] key to enter the <SETUP> page;
2. Use the cursor key
▼
to move the cursor to the [AVG] field;
3. According to your own needs, use the function keys at the bottom of the screen to
choose to INC + (with stepping of 1, 2, 4, 8, 16, 32, 64, 128, 256 to increase the
average times) or DEC - (with stepping of 256, 128, 64, 32, 16, 8, 4, 2, 1 to decrease
the average times) or use the keyboard to directly enter the value.
5.1.2 Trigger [Delay]
The instrument can set the delay time before each test by triggering the [DELAY] timer,
which is used to wait for the station to be ready before testing. The maximum delay time
is 10s, and the minimum delay time is 1ms.
Setting Steps:
1. Press the [Setup] key to enter the <SETUP> page;
2. Use the cursor key
▼
to move the cursor to the [DELAY] field;
3. According to your own needs, use the function keys at the bottom of the screen to
select the delay function, and use the numeric keyboard to enter the delay time.
5.1.3 [Self-Calibration] Switch
The self-calibration function can remove the bias voltage and gain drift of the internal
circuit of the instrument to improve the measurement accuracy. The instrument will
always perform self-calibration at slow speed, regardless of whether this switch is turned
on. For speeds above medium speed, if the [SELF-CAL] switch is turned on, the
instrument will automatically perform a calibration every 30 minutes.
Setting Steps:
1. Press [Setup] key to enter the <SETUP> page;
2. Use the cursor key
▼
to move the cursor to the [SELF-CAL] field;
3. According to your own needs, use the function keys at the bottom of the screen to
select OFF or ON.
When the self-calibration is executed, the measurement of the instrument will
temporarily pause to respond to the self-calibration. A self-calibration will take 40ms. For
high-speed measurement, the self-calibration needs to be turned off and the external IO
