● 适用于半导体的生产和科研领域，读 数误差+/-3%
● 采用液晶背光显示，可对正反向功率 及驻波比等进行三位半数字显示
● 功率测试范围可人工或自动设置，并有 GPIB和RS-232接口供选择 
功率范围: 100mW-10kW
频率范围: 100kHz-2.5GHz
驻波比范围: 1.0-199.9
读数误差: ±3%
功能: 测量正反向功率，通过W和dBm显示:测量驻波比及回波损耗，通过dB显示; 以及测量*大*小值 显示: 三位半液晶背光显示
工作电源: AC和电池两种，115/230AC，50/60Hz或8节1.2V镍镉电池
尺寸: 312X309X108mm
接口选项: IEEE-488接口或RS-232接口

Multifunction Power Meter
Precision Power Meter for Semiconductor Processing Applications
The 4421 Multifunction Power Meter is a precision RF instrument that, while originally intended for general purpose laboratory applications where high accuracy is required, has found wide acceptance in semiconductor processing applications. The product is configured as a system, consisting of the 4421 and a precision power sensor selected for the application based upon maximum power ａnd operating frequency.

±1% Accuracy - Accomplished through the use of sensors with an automatic frequency compensation scheme, where the error contributions due to directional coupler frequency response characteristics are eliminated.

• Wide Dynamic Range - The instrument will meet the full accuracy specification over a 35 dB dynamic range.
• Excellent Measurement Repeatability - Typically <0.1%
• Digital Display - Along with automatic VSWR calculation
• Computer Interface - RS-232 ａnd IEEE-488 standard