Range Selection; Output Impedance Selection; Measurement Display Speed Selection - East Tester ET1090 User Manual

The offset value in the display interface is the current offset value (for example, if the offset
value before the selection is 1V, then the level in the interface will be 1000mV). you can select the
digit bit required to be changed through the left and right direction keys; the selected digit will be
displayed in the inverted manner; the value of such digit can be changed through the up and down
direction keys ( the up direction key means + with the value of + 1; the down direction key means
– with the value of - 1;). After the selection is completed, press the button

4.2.4 Range Selection

Method one:
Turn on the instrument to enter the interface of measurement display, move the cursor to the
measurement range area and switch the range through the up and down direction keys (AUTO,
30Ω, 100Ω, 300Ω, 1kΩ, 3kΩ, 10kΩ, 30kΩ, 100kΩ).
Method two:
Press the
area.

4.2.5 Output Impedance Selection

The internal resistance is the Output Impedance of the test signal source. This instrument
offers two internal resistance options: 30Ω and 100Ω. Enter the Interface of Measurement Display,
move the cursor to the impedance through the left and right direction keys and switch the Output
Impedance (30Ω, 100Ω) through the up and down direction keys. In the default state, Output
Impedance is 100Ω. (Note: For non-current sensitive, especially low-impedance test pieces, 30Ω
source resistance is recommended.)

4.2.6 Measurement Display Speed Selection

Method one:
Turn on the instrument to enter the interface of measurement display, move the cursor to the
measurement range area and switch the speed through the up and down direction keys (fast,
medium speed, slow).
Method two:
Turn on the instrument to enter the interface of measurement display, press the
Fig.4-3
key to directly switch to the next range, and the cursor moves to the range
9
to enter.
key to