Meatest 9010+, Руководство пользователя

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Scope option has two impedance configurations of HF coaxial output connector, 50 Ω and Low Z output
impedance. Requested setting can be selected in Scope SETUP, item Impedance. In Low Z mode output
impedance is close to zero Ω, typ. < 1Ω, in 50 Ω mode is output impedance set to 50 Ω ± 2 %. Setting
of output impedance is indicated in the field SOURCE on the display using labels „LOW Z“ and „50
Ω“.
Last item in the SETUP menu is selection of displayed units. Change of unit can be performed also in
individual subfunctions using soft key Ampl. Unit.
Calibrator can simulate various, most frequently used temperature sensors, both resistance RTD type
and thermocouple TC type. The function is accessible after function selection key OPTION pushing
followed by selection of type of sensor.
In TEMPERATURE RTD function calibrator simulates resistance temperature sensor by connecting
such resistance to the output terminals which corresponds set temperature. Following screen appears
after the function selection:
To simulate an RTD temperature sensor:
1. Connect thermometer input to HI – LO, +I – -I terminals.
2. Select RTD type sensor using RTD Type soft button, either Platinum or Nickel.
3.
Set nominal resistance of the sensor at 0. °C R0. For Pt 100 sensor the value is 100.000 Ω. Use
R0 soft button.
4.
Select a predefined temperature scale or create a custom scale and select „PT user“ to access it.
5. Enter requested temperature value into main field on the display to simulate temperature sensor.
6. Push the OPER key. Calculated resistance corresponding to the set temperature is connected to
the output terminals. Real resistance value is displayed in yellow information line in upper part
of the display. If the line is hidden, push any key for value setting cursor key, rotary button or
SELECT arrow key.
Resistance is connected to HI – LO and +I – -I terminals in 4W configuration. HI – LO terminals are
“power” terminals, +I – -I terminals are “sense” terminals.
TEMPERATURE RTD function has related SETUP function. The SETUP can be opened by pushing
the key SOURCE SETUP. It contains following items:
-
Temperature unit selection, °C, °F or K