Usb Modem Hart Modems

Industrial Interface HART - RS232, RS485 or USB converter 85*65*25

Industrial control and remote monitoring of machinery with hart interface 100*70*26mm

Supplier: Hart-usb modem, hart-rs232 modem, modem, Hart-gprs data logger

In the instruments industry, the traditional 4 20 mA analog transmitters are upgrading to the fieldbus with digital communication. HART fieldbus communication has digital communication capability with compatible analog signal. HART MODEM is a necessary and convenient tool for the analog products upgrading and signal exchanging in the control plant. We provide two kinds of HART modem. HART-RS232 is the converter for HART signal to RS-232 signal. HART-USB is the converter for HART signal to PC virtual series port. Product characteristic: According to the HART physical layer specification Isolated transformer prevents the influence of earthing. Voltage signal modulator/demodulator Low power consumption designation Powered by series port or USB port Interface Type: DB9 female mount Ambient Temperature: 0 ~ 50 °C Compressive Strength :500 V AC HART bus and serial port (UART,USB) Receiving Impedance : â?¥5 K Ω, end-to-end Output Signal VPP: 600 mV â?¥ VPP â?¥ 400 mV, 500 Ω load resistance Receiving Sensitivity: 120 mV, 500 Ω test resistance HART-RS232 is the protocol converter between HART device and configurator on PC. The figure above is a sample basic case. To connect multiple HART device, please connect the other devices parallel with the Transmiter. Please note that the power should support multiple devices and the terminator should be set in the middle of the power and parallel point. HART-RS232 is a HART MODEM with voltage modulator/demodulator. To communicate with a HART device, please connect the clincher of HART port of HART-RS232 to the two terminals of the network adaptor resistance or the power of HART device. To communicate with a PC, please connect the other port of HART-RS232 to the series port of PC. The USB driver installation program should be run for HART-USB. The driver provides a virtual series ports for HART configurator software. The indication light shows the state of modem. Green LED indicates the power is working well and the modem is sending data. Red LED indicates the modem is receiving data

Huawei E160G modem specification EDGE/GPRS/GSM 850/900/1800/1900 MHz HSPA/UMTS (900/2100 MHz) HSDPA download up to 3.6 Mbps. HSDPA upload up to 384 kbps Doubles up as a memory stick with an optional MicroSD card Compatible with Windows ? 2000 / XP Home / XP Pro / Vista / MAC OS X USB interface . Dimensions: 75 x 25 x 12 mm Weight: 50g.

Features: No bad effect to the signal. Hing frequency two sides circuit plate, high isolation, good in-band flatness. Made by aluminium, nice looking. Applying broadband directing matching mode with fine impedance match. Technology Parameterú¦ Ltems Unit parmeter Freq range MHz 5-1000 Flatness dB í+1.2 Inserion Loss dB 15[/td] Mutual Isolation dB >33 Input terminal level defference dB

Modem speed touch 330 usb adsl modem qty 1900 pcs

USB 3G/HSDPA Modem Model: D-6280W Product Description: Based on Qualcomm chipset MSM6280 HSDPA/WCDMA/UMTS 2100MHZ EDGE/GPRS/GSM 900/1800MHZ HSDPA downlink up to 7.2 mbps UMTS (WCDMA) up to 384 kbps EDGE up to 237 kbps GPRS up to 85.6 kbps Embedded antenna with high sensitivity More stable, faster, Automatic software installation (no CD) LED for status and data 2.0 USB interface 3V movable SIM slot Micro SD card slot (4GB) Wireless access to internet Send and receive SMS, data, e-mail Always online Input voltage: 5V Standby current: 10 mA Working current: 200-300mA Working temperature: -10 to+55 degrees Storage temperature: -20 to+60 degrees Compatible with Windows 2000/XP/Vista/ 7 Size:88x22x 7mm Weight: 26g Accessories: manual. Plastic gift box: 19x13.5x2.3cm Master carton: 45x20x13cm/15 pcs/2.5kg.

3g usb modem unlocked Support HSDPA/UMTS 2100MHz GSM/GPRS/EDGE 900/1800MHz USB 2.0 high-speed slot Chipset: Qualcomm MSM6280 SMS Message Data service USSD function(option) Voice call facility(option) Data transmission up to 7.2Mbps (HSDPA) Data transmission up to 384Kbps (UMTS) Data transmission up to 384Kbps (EDGE) High-capacity phone book / SMS box T-flash card;micro SD card slot (up to 8GB) Operating systems Windows2000, Windows XP, Windows 7, Windows Vista, Windows CE, UBUNTU 8.04, Mac os x 10.4. CD box or paper box.