2186 & 2187 Microwave Attenuator：Wide Range GPIB programmable attenuator with outstanding accuracy for bench top, automatic and standards applications.
Attenuation from 3 to 130 dB
1 dB steps
DC to 20 GHz frequency range (2187)
IEEE-488.2 interface fitted as standard
External relay driving capability
Calibration data to international standards
User calibration facility
The 2186 and 2187 are microwave attenuators covering the frequency range DC to 5 GHz (2186) and DC to 20 GHz (2187) with an
attenuation range of 3 to 130 dB in 1 dB steps.
Microprocessor control provides simple and rapid operation either by direct keyboard operation or via the IEEE-488.2 interface which is fitted as standard.
The 2186 and 2187 are ideally suited to ATE applications with rear panel input and output versions available as options.
频率范围
2186：DC to 5 GHz
2187：DC to 20 GHz
衰减范围
0 dB to 130 dB
分辨力
1 dB from 3 dB to 127 dB
精度
DC：0.3 dB ±1.5% of setting
DC to 2.7 GHz：0.45 dB ±2% of setting
输入阻抗：50 Ω Nominal
功率：1 W at 55oC ambient
VSWR
1.25:1 from DC to 2.7 GHz
1.5:1 from 2.7 GHz to 5 GHz - 2186
1.5:1 from 2.7 GHz to 6 GHz - 2187 only
2.0:1 from 6 to 18 GHz - 2187 only
插入损耗：Typically 0.2 dB +0.25 dB/GHz
连接器：Precision N-type female
GPIB接口
Designed in accordance with IEEE Std. 488.2. All functions except supply switch are remotely programmable.
Capabilities
Complies with subsets
SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT0, C0 and E2 as defined in IEEE Std. 488.1.
Switching Speed
100 ms - Normal mode
160 ms - Corrected mode
Switching Rate
Nominally 5 per second at 23oC. Derating to 1 per second at 55oC.
