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16 

 

Manual     ISM

 

 

usb.1 / .2 

 

 

Now, please click 

Spectrum analysis

 to start the RSSI analysis : 

 

 

 

The dialogue shows the current signal strengths in the used frequency range. In this way you can see if 
there are additional radio signals in the frequency range which might prevent the radio receiver from 
receiving the measuring values or superimpose its radio signal. If this is the case, please try to place the 
radio receiver in an area without interferences. 
The example above shows the background noise on all frequencies and a weak signal at about  
434.4 MHz. Both will in this strength not influence the receiving of values from the ISM or IBRit-rf1 radio 
modules. 
But a stronger signal might interfere with the communication, even if it is at 434.4 MHz. 
 

 

 

Note :

 

Because the communication between ISM or IBRit-rf1 radio transmitter and radio receiver is 

 

   

bidirectional, you should additionally do an RSSI measurement in the work area of the radio 

 

   

transmitter. In this way you can determine if there are radio signals that could interfere with 

 

   

the communication between transmitter and receiver.

 

 

Summary of Contents for ISM-usb.1

Page 1: ...I n t e r f a c e t e c h n o l o g y Document No D2F620 010 Edition April 2020 Copyright IBR Messtechnik GmbH Co KG INSTRUCTION MANUAL ISM usb 1 2 PC Radio station for wireless data transmission...

Page 2: ...d initial operation of the IBR_SimKey PC software 6 3 Programming of gauge radio modules by using the IBR_SimKey PC software 9 4 Confirmation signals of the gauge radio modules 14 5 Signal strength me...

Page 3: ...value changes The radio module completes the measured value by adding an address number sender a communication control word and a double checksum The special data coding and the PC s reply directly to...

Page 4: ...d independent check sum control Optical and acoustical transmission confirmation by the radio modules Radio range of the ISM usb 1 up to 300 m in case of visual contact with external antenna 1 3 Techn...

Page 5: ...2 2 System requirements PC with USB interface and operating system Windows 2000 Windows 10 2 3 Installation of the USB driver for the ISM usb PC Radio station The driver installation package is locate...

Page 6: ...imKey_Inst exe c Follow the instructions displayed in the windows of the programme installer 2 Starting IBR_SimKey Initial operation of the software can take place directly after completion of the ins...

Page 7: ...e or in case there was no PC connection selected in the software you will receive the following message Please confirm the message box by clicking the OK button Now the window for interface settings a...

Page 8: ...the on off button of the radio module concerned The button is located directly on the right hand side of the Gauge Sensor column This programming possibility allows simultaneous operation of several...

Page 9: ...indow for interface settings and instrument selection Quit Closes the IBR_SimKey software Please note that there must be a ISM usb PC Radio station connected to the PC in order to operate the IBR_SimK...

Page 10: ...re to be transmitted automatically in the Permanent Mode The Permanent Mode is started by pressing the data key on the radio module Note Using the Permanent Mode can reduce the lifetime of the module...

Page 11: ...request of the gauge radio modules with Opto RS232 interface Any character or a Simplex Impulse can be set for measurement data request Please refer to the manual of your gauge in order to find the c...

Page 12: ...anent Mode can be used Disadvantages of the 230400 Baud data rate a not IBRit rf1 compatible b only approximately 60 range in comparison with 9600 Baud Please note that the change of the data transmis...

Page 13: ...ion of the measuring values The maximum data rate should not exceed 2 Hz for the mentioned radio modules because else the battery life will be shortened too much The ISM ISi always works with 10 Hz 0...

Page 14: ...by the ISM ISi 4 Confirmation signals of the gauge radio modules The gauge radio modules always return a clear optical and acoustical confirmation to the operator on programming or measurement data t...

Page 15: ...Strength Indicator By this the signal strength of radio or interference signals can be measured which might exist in the frequency range of the ISM or IBRit rf1 radio modules Please use the latest ve...

Page 16: ...ferences The example above shows the background noise on all frequencies and a weak signal at about 434 4 MHz Both will in this strength not influence the receiving of values from the ISM or IBRit rf1...

Page 17: ...which contain the risk that SYSTEMERRORS can lead to damages or personal inju ries should not only depend on electronic systems In order to avoid damages injuries or death the operator or system devel...

Page 18: ...ering with the device shall void the guarantee and exempt the manufacturer from any liability Before opening the instrument make sure to effectively cut the power supply e g by disconnecting the power...

Page 19: ...allation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications H...

Page 20: ...or damage due to Disregard of operating instructions Incorrect handling Tampering by unauthorised staff Attempts by any unauthorised person to repair the instrument We are not to be held liable for an...

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