Radio Shack 22-812A, Руководство пользователя, Страница: 21 / 24

MASTER BKGRD 6-26-07
1
MASTER BKGRD 6-26-07
Specifications
K-TEMpERATURE MODE
This is a special �oltage mode, to be used with an optional thermocouple module that can
be attached to the meter. This mode automatically con�erts the 1mV per
°
C or
°
F �oltage
into a readout that appears as a temperature. �n these modes, the unit can show up to ±
999
°
C or
°
F.
The accuracy of these modes is determined by the e�ternal de�ice and the accuracy of the
DC �olt mode. The temperature range of the newer 1mV per degree C probes is generally
between –50
°
C and 1000
°
C.
FREQUENCY
Accuracy
400Hz, 4k, 40k, 400kHz, 4MHz: ................................... ± 0.1% of Reading, ± 4 in Last Digit ± 0.1% of Reading, ± 4 in Last Digit
Sensitivity
The function dial set to LOGIC/Hz (10Hz – 4MHz)
400Hz, 4k, 40kHz .................................................................................................... 50 mVrms
400kHz .................................................................................................................. 100 mVrms
4MHz ..................................................................................................................... 250 mVrms
For AC �oltage frequency, the function dial set to °C/°F / V (ma�imum measuring
fre�uency 1 kHz for signal above 40V)
10Hz to 1 kHz
......................................................................................................... 70 mVrms
1kHz to 10 kHz ..................................................................................................... 400 mVrms
For AC �oltage frequency, the function dial set to dBm ~ V (ma�imum measuring
fre�uency 1 kHz for signal above 40V)
10 Hz to 200 Hz
.................................................................................................... 300 mVrms
200 Hz to 1 kHz ......................................................................................................... 0.4 Vrms
1 kHz to 10 kHz ............................................................................................................ 4 Vrms
For AC current frequency
400µA/4mA ................................................................................
10 Hz to 30 kHz: 250µArms
40mA/400mA ............................................................................. 10 Hz to 30 kHz: 25mArms
4A/10A ........................................................................................... 10 Hz to 10 kHz: 2.5Arms
DUTY CYCLE (Fre�uency Range: 10 Hz to 100 kHz)
10% – 90% (at +5V/-0V S�uare wave) ................................... ± 2 digits/kHz, ± 2 in last digit
Note : Duty cycle accuracy depends on input signal frequency.