主要特性与技术指标
- 平坦的带宽——直流至50 MHz
- 低噪声 —— <2.5 mA rms
- 低电路插入损耗
- 可与具有BNC输入的任意示波器配合使用
- 伴侣电源N2775A（2x 12 Vdc输出）使用户可用一个电源给两个N2774A供电
Characteristics
Measurement Characteristics and Specifications1
Probe Bandwidth DC to 50MHz (-3 dB)
Accuracy* (Probe Only) ±1% of reading ±1mV(DC or 45Hz to 66Hz)
Risetime2 ~ 7ns
Maximum continuous current 15 A (DC + ACrms) continuous(Refer to frequency derating curve, Fig. 2)
Maximum peak current 50 A (for Pulse Widths ~ 10μs)
Probe sensitivity 0.1 V/A
Noise ~ 2.5mArms(with 20 MHz Bandwidth limiting)
Insertion impedance Refer to Fig. 3
Temperature coefficient ~ ±2% (0% C to 40% C)
Effect of external magnetic fields Equivalent to ~ 20 mA (for a 400 A/m magnetic field, DC to 60 Hz)
Maximum circuit voltage 300 V Cat I (refer to safety considerations and product compliances)
* Denotes warranted specification. All others are typical.
1. Requires 1 MW termination. Valid for 23% C ±3% C (73% F ±5% F), at least 30 minutes after power on.
2. Rise time is calculated as: Tr = 0.35/Bandwidth.
Power Supply Characteristics
DC supply voltage requirements ±12Vdc ±1V
Probe power consumption Increases with measured current. 3 VA when measuring 15 A
