美國鳥牌[BIRD] 4391A 數顯峰值功率計詳細介紹：
鳥牌4391A數顯峰值功率計
3 1/2LED數顯峰值功率計，頻率450KHz～2.7GHz，功率100mW～10KW，調制類型CW、FM、AM、SSB，不兼容多載頻信號，zui小脈寬0.8μs，精度±5%，可測駐波比，鎳鎘電池。
Rugged, PEP RF Power Analyst
Field Ready
Easy To Use
Rugged
Reliable
Accessories:
QC Connectors - QC-type "Quick Change" RF Connectors
Support Tools:
Operation Manual
Technical Paper
Product Specifications:
AC Power: 100-130/200-260 V, 50/60 Hz, 6 W
Accuracy: ±5% of full scale CW, ±8% PEP, VSWR: ±10% of reading, % Modulation: （CW power 1/3 or more of full scale） ±5% （0-90%）, ±10% （90-100%）
Battery Life: 8 hours （rechargeable）
Connector: QC Type （Female N normally supplied）
Display: 3 1/2 digit, 0.3" LED strobed
Finish: Blue vinyl with silver anodized side panels
Frequency Range: 450 kHz to 2.7 Ghz
Insertion VSWR: with N connectors 1.05 max. to 1000 MHz
Meter Scales: FWD and RFL 25, 50, 100 W
Modulation Frequency: 25 to 10,000 Hz （Audio）
Nominal Size: （includes connectors） 9 9/16" L x 5 7/32" W x 4 5/16" H （243 mm x 158 mm x 110 mm）
Power Rating: 100 mW to 10 kW using Bird Plug-in Elements
Pulse Parameters: （min.） Pulse width 0.8 μs （100-2700 MHz）, 1.5 μs （26-99 MHz） and 15 μs （2-25 MHz）, Repetition Rate 25 PPS, and Duty Factor 1 x 10^4
Return Loss: ±0.3 dB to corresponding SWR value
Sampling Rate: 2 to 3 readings per second
Usable Over-range: to 120% of scale （CW, PEP, SWR and Return Loss）
Weight: 5 3/4 lbs. （2.6 kg）