選用二手測(cè)量?jī)x器的優(yōu)勢(shì)是：
1、與新購(gòu)儀器幾個(gè)月的供貨期相比，購(gòu)買二手儀器的供貨期要短的多。在 時(shí)間就是市場(chǎng)的今天，優(yōu)勢(shì)無(wú)疑是最為明顯的。
2、二手儀器的價(jià)格便宜，基本為新購(gòu)儀器價(jià)格的20%～50%。在電子技術(shù)迅 速發(fā)展的今天，儀器的更新也在加快，投資越少則風(fēng)險(xiǎn)越小。
3、為了讓您放心地使用我們提供的二手儀器，我們銷售的二手儀器可以做到：
1、保修半年至一年不等。
2、可以根據(jù)您的要求，將儀器送至國(guó)家級(jí)計(jì)量測(cè)試單位進(jìn)行校準(zhǔn)。

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.