M302 Series,
Data Acquisition/ Switch System Mainframe + DMM Module

20 channel MUX module, and M3TB20 terminal block

cart Order online ►► | M302 |

M300 Data Acquisition Mainframe Video— Watch the M300 Video —


  • Up to 320 switch channels per mainframe,save on cost of ownership
  • Integrated DMM scanning of up to 256 channels
  • Interval scanning with storage of up to 100,000 time-stamped readings
  • 8 different available modules including the MC3065 6.5 DMM module and MC3120 MUX module (these modules are included in the mainframe model M302)
  • Terminal blocks available for each module (a M3TB20 terminal block is included in mainframe model M302)
  • 4.3′ LCD Display with intuitive GUI for front panel configuration without a PC
  • UltraAcquire data acquisition PC software for power users
  • Connect via USB, GPIB, LAN (LXI-C), or RS-232
  • Store configurations or log readings to a USB memory stick automatically
  • c/w MC3065 DMM 6.5 and MC3120 switch Module

Modules Available

  • DMM module
  • 20-channel multiplexer
  • 5 slots(DMM and MC3120 use one of these slots each)
  • MC3065 DMM and MC3120 Module
  • Interfaces: USB Host & Device, LAN (LXIC), GPIB, RS-232
  • UltraSigma software
  • LAN troubleshooting using PuTTY
  • 300V RMS Max Input (DC,AC rms)
  • 1A RMS Max Input (DC,AC rms)
  • Power (w,VA) 50VA


M300 Series Data Acquisition/Switch System with modular structure, which combines precision measurement capability with flexible signal connections, can provide versatile solutions for the applications with multiple points or signals to be tested in product performance test during R&D phase as well as automatic test during production process.
  • Literature
  • Specifications
Model: M300 Data Acquisition/ Switch System
Display Resolution: 480 x 272 TFT LCD
Size: 4.3”
DC Characteristic
DC Voltage
Input Impedance: 200mV, 2V, 20V ranges: 10MΩ or >10GΩ
(For these ranges, input beyond ±26 V are clamped through 106 kΩ)
200V and 300V ranges: 10MΩ±1%
Input Protection: 300V
Input Offset Current: 50pA, at 25℃, typical
CMRR: 140 dB for 1 kΩ unbalanced resistance in LO lead, ±300 VDC peak maximum.
Measurement Method; 4-wire or 2-wire resistance
Current source referenced to LO input
Open-circuit Voltage: Limited to <10 V
Max. Lead Resistance
10% of range per lead for 200 Ω and 2 kΩ ranges, 1 kΩ per lead on all other ranges
Input Protection: 300V on all ranges
Offset Compensation: Available on 200 Ω, 2 kΩ and 20 kΩ ranges.
DC Current
Shunt Resistor: 100 Ω for 200 uA, 2 mA
1 Ω for 20 mA , 200 mA
0.01 Ω for 2 A, 10 A
AC Characteristics
True RMS AC Voltage
Measurement Method: AC-coupled True-RMS — measure the ac component of input with up to 300 V DC bias on any range.
Crest Factor: ≤ 5 at full range
Input Impedance: 1 MΩ ± 2%, in parallel with <150 pF capacitance on any range
Input Protection: 300 V rms on all ranges
AC Filter Bandwidth: Slow: 3 Hz – 300 kHz
Medium: 20 Hz – 300 kHz
Fast: 200 Hz – 300 kHz
CMRR: 70 dB, for the 1 kΩ unbalance in LO lead, <60 Hz common mode signal frequency, ±500 VDC peak maximum
True RMS AC Current
Measurement Method: Direct coupled to the fuse and shunt; AC-coupled True RMS measurement (measure the AC component).
Crest Factor: ≤ 3 at full range
Max. Input: DC + AC current peak value <300% of range. Current with DC current component <10 A rms.
Shunt Resistor: 100 Ω for 200 uA, 2 mA
1 Ω for 20 mA , 200 mA
0.01 Ω for 1 A
Frequency and Period Characteristics
Frequency and Period
Conversion: Reciprocal-counting technique, AC-coupled input using the AC voltage function
Input Impedance: 1 MΩ ± 2%, in parallel with <150 pF capacitance on any range
Input Protection: 300 Vrms on all ranges
Temperature Characteristics
Conversion ITS-90 software compensation
Reference Junction Type: Internal, Fixed, or External
T/C Check Selectable per channel. When the channel resistance is >5kΩ, it is considered as Open.
Alpha: = 0.00385 (DIN/IEC 751): using ITS-90 software compensation;
= 0.00389, 0.00391 or 0.00392: using IPTS-68 software compensation
Series: 44004, 44007, 44006
Digital Input/Output (DIO)
Port 1,2,3,4: 8-bit, input or output, non-isolated
Type: Vin(L) Vin(H) Vout(L) Vout(H) Vin(H)
<0.8V >2.0V <0.2V@Iout=-500mA >4.8V@Iout=1mA <42V with external open drain pull-up
<1.5V >3.5V <0.2V@Iout=-500mA >4.8V@Iout=1mA
<1.0V >2.3V <0.2V@Iout=-500mA >3.15V@Iout=1mA
<0.75V >1.75V <0.2V@Iout=-500mA >2.35V@Iout=1mA
<0.2V@Iout=-500mA >(Level-0.2V)@Iout=1mA
T/C Check Selectable per channel. When the channel resistance is >5kΩ, it is considered as Open.
Power Voltage: AC 100V – 120V, 45Hz – 440Hz
AC 200V – 240V, 45Hz – 66Hz
Detect the power frequency automatically at power-on, 400 Hz defaults to 50 Hz
Power Consumption: 25 VA Max
Temperature Range: Full accuracy for 0℃ to 50℃
Full accuracy to 80% R.H. at 40℃ Non-coagulation
Storage Temperature: -40℃ to 70℃
Humidity Range: 0℃ to 30℃ ≤95% rel. humidity
30℃ to 40℃ ≤75% rel. humidity
Storage: Flash non-volatile memory (internal); USB disk (not supplied)
Flash non-volatile memory (internal) 1G Bytes
Remote Interface: GPIB, 10/100Mbit LAN, USB 2.0 Full Speed Device & Host (support USB storage device), RS-232
LXI: LXI Core Device 2011,Version 1.4
Dimensions: 159.0mm × 239.0mm × 373.4mm
Weight: About 5.7 kg (without package)
Safety: IEC 61010-1; EN 61010-1; UL 61010-1; CAN/CSA-C22.2 No. 61010-1
Measurement CAT I 1000V/CAT II 300V
Pollution Degree 2
EN 61326-1