Technical indicators: project DS2100Q DS2100 DS2100B frequency frequency range of 5MHz to 870MHz precision 
 Receiver bandwidth of ± 50 × 10? (20 ° C ± 5 ° C) resolution of 10 KHz, 280 KHz, analog TV signal level range 30dBμV ~ 120dBμV, 
 Accuracy ± 1.5dB Resolution 0.1dB input impedance of 75Ω channel scanning the total number of scan channels up to 150 channels × digital TV signal power level range 
 30dBμV ~ 110dBμV accuracy of ± 2.0dB Resolution 0.1dB standard modulation form of the ITU? T J.83 Annex A 
 standard, 64QAM/128QAM/256QAM (16QAM/32QAM) option ITU? T J.83 Annex A 
 standard, 64QAM, 256 QAM power to support the QAM, QPSK, COFDM and other symbol rate 4MS / S ~ 7MS / S receiver bandwidth 
 8MHz (set) MER accuracy ± 2dB to 39dB (typical) the BER 1E? 3 to 1E? Correction before / after 1E? 3 to 
 1E? 9 error correction constellation icon with options × preference channel to support the frequency spectrum spectrum swath 2.5MHz/6.25MHz/12.5MHz/25MHz / 
 62.5MHz adjustable bandwidth of 10MHz fixed other tests signal-to-noise ratio (S / N), slope measurement Trunk voltage measurement, automatic test slope measurement Trunk voltage measurement, the host computer to manage the host computer management software standard option 
 X power supply battery 11.1V 1.5AH lithium-ion battery charger AC 90 V to 240V 50/60Hz 5 hours working time (battery fully charged) 
 Charging time <3 hours the Zhengzhou Hanson Radio and Television Communication Equipment Co., Ltd. Tel :0371-53,769,167 Sales: Zhujing 18,939,564,786 Q 
 Q: What 1,006,519,081 address: Zhengzhou City Zijingshan Road and East Main Street Interchange to the west 300 meters