二手回收Agilent 346C|全新回收Agilent 346C
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二手回收Agilent 346C|全新回收Agilent 346C
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Agilent Technologies Noise Sources:
346C and N4002A
(All Serial Numbers)
346C 噪聲源，10 MHz 至 26.5 GHz，額定 ENR 15 dB
（一）主要特性與技術(shù)指標(biāo)
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頻率范圍：10 MHz 至 26.5 GHz
電壓駐波比：< 1.35:1
連接器：BNC（陰頭）輸入偏置/3.5 毫米（陽(yáng)頭）
低 SWR 適用于降低噪聲系數(shù)測(cè)量的不確定度
特定頻率下單獨(dú)校準(zhǔn)的 ENR 值
校準(zhǔn)程序通過(guò)軟盤(pán)提供，可輕松地載入到 NFA 系列噪聲系數(shù)分析儀
（二）描述
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Keysight 346C 噪聲源是是德噪聲系數(shù)解決方案的理想?yún)f(xié)同工具。由于它是寬帶噪聲源（10 MHz 至 26.5 GHz），所以無(wú)需在不同頻段上使用多個(gè)信號(hào)源。噪聲源的低 SWR 可以減少測(cè)量不確定度的主要來(lái)源，即測(cè)試信號(hào)的反射。選件 K01 是同軸噪聲源，與 2.4 毫米同軸連接器搭配使用，其工作頻率范圍可達(dá)到 1 至 50 GHz。
Table 1 Replacement Parts List
The replacement bulkheads and cartridges listed in Table 1 are tested in the factory to determine the bias current level
necessary to ensure that the product meets ENR specification.
For the 346C, bias levels are determined by installing the appropriate resistor value for R2 and R3 on the printed
circuit board (Figure 1- 00346-60034). The appropriate resistors are supplied with the replacement part.
Replacement Bulkheads for the 346C have the recommended bias level written on the part. The appropriate resistors
are enclosed in a small envelope. The resistors' value and part number are written on the envelope. The N4002A
bulkheads are not be supplied with an envelope and resistor. However, the value of the current is marked on the part.
00346-60155 Replacement Noise Cartridges are used in both models. These parts will be labeled with a tracking
number. The appropriate resistors will be enclosed in an envelope which is marked with the tracking number of the
cartridge, resistor value, part number and recommended bias current level. Also, the cartridges are shipped with
Installation Note 00346-90024, Attenuator Replacement, in case attenuator tuning is necessary to bring the unit to
within specification.
For the N4002A model, the bias is set electronically by using field calibration software to calibrate the Noise Source
and re-burn the EEPROM. The bias value of current supplied with the Rep
二手回收Agilent 346C|全新回收Agilent 346C
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