HP8922B / E / G series such as, R / S company CMD54, CMD52 and CRTS02, 04,24 series can provide different levels of the mobile station and base station testing. In the test base station, the system simulator can simulate the mobile stations and networks in the A (or Abis) interface and air interface (Um interface) on the base station is measured. In the test mobile station, the system base station and network simulator can simulate the air interface (Um interface) of the mobile station measurements. The quantity ofcell phone jammershould be computed accurately. Fading and multipath propagation chess emulator (MFs) multipath fading simulator (MFS) is also part of the system in the functional part of the simulator, it is mainly used in the measurement of radio interference performance virtual reality and more mobile broadband wireless channel propagation conditions. It provides recommendations from the COST207 and GSM05.05 standards set forth in the multipath propagation model. Typical urban area, including topography (TU), rural terrain (RA), hilly terrain (HT) and designed for testing the performance of the equalizer mode of transmission (EQU). MFS should be able to simulate the multi-path propagation conditions from the speed of 3km / h to 250km / h within the multi-path distribution, particularly the use of a speed limit of 3,50,100 and 250km / h in the case. The customer will perform the quantity computation ofcell phone jammertogether with the manager. Standard test signal system test equipment should be able to produce the following standard test signal as the test input signal: (1) standard test signal Co: it is a continuous unmodulated carrier signal. (2) The standard test signal C1: it is a standard GSM modulation signal, the modulated data signal input to the format for the 010l channel encoder input. Channel encoder to select the test by the test method and encryption mode. In the non-hopping mode with the signal, the other unused slot sent free Burst (dummy burst), and the power level change relative to the use of slots. Above two standard test signals are used to represent the useful signal, the unwanted signal (ie, interference signal) has the following three standard test signal: (3) standard test signals I0: as a continuous unmodulated carrier signal. The result of quantity computation ofmobile phone jammershould be recorded. (4) The standard test signal I1: is GsM modulated carrier signal, and its structure in accordance with the GSM signal burst (burst, as burst or short burst. Below) structure, but its all modulation bits (including the burst of part of the training sequence) are directly random or pseudo-random data stream. (5) The standard test signal I2: a standard GSM modulation signal, but with the C1 signal is different from the unexpected part of the training sequence of the standard GSM training sequence, but the burst of data bits (including bits 58 and 59) are random or pseudo-random data stream. Using the same standard RF cable and adapters, including adapters, including the requirements of the GSM bands between the channel loss is less than 0.5dB, loss of value of the difference is less than 0.2dB; DCS frequency band between the loss of each channel is less than 1dB, loss value difference is less than 0.3dB, with characteristic impedance adapter should be within 50 ± 5 ohms. The table will contain the result of quantity computation ofcellular phone jammer.. RF test set using CMU200 or HP8960. Spectrum analyzer with HP or AGILENT series. 3, band-stop filter BANDREJECT FILTER requirements of the corresponding emission band above 30 dB signal attenuation, RF on the second and third harmonic attenuation (insertion loss) is less than 1.5 dB, VSWR less than 1.3:1, greater than the rated power input 1W. 4, testing the cell phone in connection with the tester when the BS TCH signal strength is set to-60dBm, when the bit error rate testing, BS signal standard-102dBm. Shielding box, notch filter, RF attenuator, RF cable and so on. It will take some time to finish the quantity computation ofcell phone jammerfor this order.