This document compares the specifications of two digital multimeter models, the 98A+ and 98C+. It lists the measurement ranges and accuracy for voltage, current, resistance, capacitance, frequency, thermocouples, and temperature for both models. Both models have a 22,000 count display, 3 readings per second measurement rate, and support features like automatic/manual ranging, diode and switch testing, data hold, and maximum/minimum readings. The main differences are that the 98C+ supports wireless communication and remote control via software, while the 98A+ has a lower safety rating and uses USB connectivity.

1. 98A+
(产品型号展示优化词：USB Digital Multimeter with 22000 counts
98A+)
Features：
USB Digital Multimeter with
22000 counts 98A+
Specifications:
Project 98C+ 98A+
DC voltage Range 200mV/2V/20V/200V/1000V 200mV/2V/20V/200V/1000V
Basic accuracy ±（0.05%+4） ±（0.05%+4）
AC voltage Range 200mV/2V/20V/200V/1000V 200mV/2V/20V/200V/1000V
Basic accuracy ±（0.5%+40） ±（0.5%+40）
DC current Range 200uA/2000uA/20mA/200mA/2A/10A200uA/2000uA/20mA/200mA/2A/10A
Basic accuracy ±（0.2%+10） ±（0.2%+10）
AC current Range 200uA/2000uA/20mA/200mA/2A/10A200uA/2000uA/20mA/200mA/2A/10A
Basic accuracy ±（0.8%+30） ±（0.8%+30）
Resistance Range 200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ/
60MΩ
200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ/60
MΩ
Basic accuracy ±（0.2%+5） ±（0.2%+5）
Capacitance Range 10nF/100nF/1000nF/10uF/100uF
/1000uF/10mF/100mF
10nF/100nF/1000nF/10uF/100uF
/1000uF/10mF/100mF
Basic accuracy ±（5%+5） ±（5%+5）
Frequency Range 10Hz～10MHz 10Hz～10MHz
Basic accuracy ±（0.02%+4） ±（0.02%+4）
ThermocoupleRange K indexing：-200.0°C～1360.0°C K indexing：-200.0°C～1360.0°C
Basic accuracy ±（1%+1°C） ±（1%+1°C）
Thermal
resistance
Range Pt100：-200.0°C～850.0°C Pt100：-200.0°C～850.0°C
Basic accuracy ±（1%+0.5°C） ±（1%+0.5°C）
Display words 22000 22000
The measurement rate 3 times / sec 3 times / sec
Analog Bar graph 20 times / sec 20 times / sec
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2. Automatic / manual range Yes Yes
Measure the true effective value Yes Yes
Bandwidth 1kHz 1kHz
The duty ratio 0.1%～99% 0.1%～99%
Diode test Yes Yes
Switching test Yes Yes
Decibel measurement（dBm） Yes Yes
AC+DC Yes Yes
Maximum / minimum value
selection
(MAX/MIN/AVG)
Yes Yes
Relative value
measurement(REL)
Yes Yes
Data Hold Yes Yes
Auto Hold Yes Yes
Peak Hold Yes Yes
Cold end temperature
compensation
Yes Yes
Celsius / Fahrenheit temperature
switch
Yes Yes
The input impedance 10MΩ 10MΩ
Data recording 1000group 1000 group
Online communication 2.4G wireless communication module
and PC wireless communication
standard USB interface.
The isolation of the USB interface and
PC communication.
Support the SCPI command, can realize remote control instrument by the device
driver software. The powerful function, friendly man-machine interface, the user
can conveniently obtain multiple data parameters of instrument, and the data
storage, processing, management, access to data is displayed in the graphical or
tabular form.
Auto power-off Yes Yes
Display type LCD LCD
Backlight Yes Yes
Power Supply 4×AAA Alkaline batteries 4×AAA Alkaline batteries
Safety CAT IV 600V、CAT III 1000V CAT III 600V、CAT II 1000V
Electromagnetic compatibility IEC61326-1，Group1，Class B IEC61326-1，Group2，Class B
Size 205×95×42mm（Sheathing） 205×95×42mm（Sheathing）
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3. Weight About500g About500g
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