另外，由于采用新标准的电子衰减器，8920A的可靠性得到提高，有助于保证该测试装置的最有效使用。带跟踪发生器和邻信道功率测量的频谱分析仪HP 8920A可选的合成频谱分析仪可测量400kHz~1GHz的信号，可变间距为5kHz~1GHz(全间距)。显示分辨力可在每格1、2或 10dB(分贝)之间进行选择。可调光标自动读出频率和幅度或者相对于基准而言的相对频率或相对幅度。
HP 8920A is a full-feature, one-box test set designed to meet service and repair needs in the cellular and land mobile communications market. Combining 22 instruments, the HP 8920A offers full functionality needed in testing cellular phones, land mobile radios, and communications systems up to 1 GHz.
Test and Troubleshoot Faster
The HP 8920A decreases test and troubleshooting time by simplifying standard measurement tasks and providing extensive capability in one box. Transmitters and receivers are simply characterized with single-key RX, TX, and duplex tests. Measured results are displayed on a single screen as either digital measurements or analog bar graphs. All settings and measurements are easily accessed and changed using the front-panel knob, and all settings can be saved in nonvolatile save/recall registers or on a SRAM card media for future access.Spectrum Analyzer with Tracking Generator and Adjacent Channel Power
The HP 8920A's optional synthesized spectrum analyzer measures signals from 400 kHz to 1 GHz with variable spans from 5 kHz to 1 GHz (full span). Display resolution is selectable from 1, 2, or 10 dB per division. The tunable marker provides automatic readout of frequency and amplitude, or of relative frequency or amplitude from a reference. The tracking generator included with the spectrum analyzer allows for swept characterization of devices with fully settable amplitude and sweep spans (to 1 GHz). The newly added adjacent channel power measurement capability includes both variable bandwidths and variable frequency offsets. Typical performance is -70 dBc.Signaling Encoder and Decoder
The optional signaling encoder and decoder support all common signaling formats, including tone sequential, digital paging, DTMF, trunking, and cellular signaling. Common standards are list-selectable and easily modified for different user formats. The decoder displays the tone or digital sequence transmitted, and the duration of the tone or tone pair. For digital paging transmitters, the decoder will display the address/code, the message, and the transmission rate.