选用二手测量仪器的优势是：
1、与新购仪器几个月的供货期相比，购买二手仪器的供货期要短的多。在 时间就是市场的今天，优势无疑是最为明显的。
2、二手仪器的价格便宜，基本为新购仪器价格的20%～50%。在电子技术迅 速发展的今天，仪器的更新也在加快，投资越少则风险越小。
3、为了让您放心地使用我们提供的二手仪器，我们销售的二手仪器可以做到：
1、保修半年至一年不等。
2、可以根据您的要求，将仪器送至国家级计量测试单位进行校准。

Rohde & Schwarz, Inc. NRVS one channel and NRVD Dual channel power meter display unit, IEEE bus, digital/analog display

The NRVD covers a total bandwidth of 40 GHz and a power span from 100 pW up to the kW range. Being individually and absolutely calibrated, the measuring heads can be interchanged as required without impairing specified error limits. The wide range of measuring heads includes thermal power sensors as well as highly sensitive diode power sensors, peak power sensors, probes and insertion units for voltage measurements.

Features:

• LC display with variable backlighting, separate digital readout for each channel, bargraph indicator
• Softkeys for control via menus
• Entry of reference values for level and attenuation
• 13 digital filters for noise suppression, manual or automatic filter selection
• Storage of 20 instrument setups
• Input/output option with DC frequency input, analog outputs, trigger input, ready output
• Rear connectors for measuring heads in system operation
• Generator for testing measuring heads
• Correction of frequency response of measuring heads:Frequency entry via keyboard, IEC/IEEE bus or by means of a frequency-proportional DC voltage.