Introduction
The JSM is scalable and high-performance strain measurement hardware with sensor connectivity for acquiring, measuring, displaying, recording, and processing of dynamic data. The hardware has three types: multi-channel chassis type, multi-channel car type, and low-density portable type.

The low-density portable type has 4 channels for remote wireless strain measurement and fault detection. Jumho Electric also offers specialized analysis software – StrainMaster, and strain gauges for you to establish a complete strain measurement system.   
                                         

Specifications
         Input channels……………………… ……………………… ……4
         Maximum sample rate…… ………… ………………… ………50KS/s per channel
         Accuracy (full scale range)…………………………… …………0.01%
         Isolation type………………………………………………………channel-to-earth ground isolation
                                                                                                                            1,000 Vrms transient isolation
         Strain gauge………………………………………………………120 Ω, 350 Ω
         Wheatstone bridge……………… ……………… ………………programmable half-, full-bridge
         ADC type……………… ……………… …………… ……………Delta-Sigma, 12 bits
         Digital filter…………………………………………………………low pass, high pass, band pass, band stop
         I/O connector………………………………………………………±25 mV analog input, RJ250 connector
         IEEE 802.11 b/g wireless and Ethernet
         Maximum excitation………………………………………………10 V (TEDS compatibility)
         128-bit AES data encryption and IEE 802.11i (WAP2) support
         Power requirement………… … ……… …… ……… … ………9～30 VDC
         Operating temperature………… …………… ……… … ………-40 ℃~ +70 ℃
         Storage and transportation temperature……………… ………-40 ℃~ +85 ℃
         Operating humidity…… ……………… …………………………10 to 90% RH, non condensing
         Dimensions…………………… ……………………… … ………214mm X 95mm X 102mm
         Standard……………………………………………………………China ROHS, IEC60068-2-64


Electromagnetic Compatibility (EMC)
This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:
         EN 61326 (IEC 61326): Class A emissions; Basic immunity
         EN 55011 (CISPR 11): Group 1, Class A emissions
         AS/NZS ClSPR 11: Group 1, Class A emissions
         FCC 47 CFR Part 15B: Class A emissions
         ICE-001: Class A emissions

CE Compliance
This product meets the essential requirements of applicable European Directives, as amended for CE marking, as follows:
         2006/95/EC; Low-Voltage Directive (safety)
         2004/108/EC; Electromagnetic Compatibility Directive (EMC)

Safety Standard
         IEC 61010-1, EN 61010-1
         UL 61010-1, CSA 61010-1

Naming Rules
         JSM-USB-04        USB 4-channel strain measurement hardware
         JSM-WLS-04        Wireless 4-channel strain measurement hardware
         JSM-ENET-04      Ethernet 4-channel strain measurement hardware