General Performance Features 

N5181B-UNZ 快速切换 

N5181B-UNX 低相位噪声 

N5181B-UNY 增强的低相位噪声性能 

N5181B-1EA 大输出功率 

N5181B-1EQ 小功率（< -110 dBm） 

N5181B-1ER 灵活的参考输入（1 ～ 50 MHz） 

N5181B-302 Avionics License 

N5181B-099 期限延长的许可证密匙升级能力 

 Frequency Range 

N5181B-503 9 kHz 至 3 GHz 频率范围 

N5181B-506 9 kHz 至 6 GHz 频率范围 

 Connector Configuration 

N5181B-1EM 将所有连接器移至后面板 

 Calibration Documentation 

N5181B-UK6 Commercial calibration certificate with test data 

N5181B-A6J ANSI Z540-1-1994 校准 

N5181B-AMG 校准 + 不确定度 + 保护频段（认证） 

 Analog Modulation 

N5181B-UNW 窄脉冲调制 

N5181B-UNT 调幅、调频、相位调制 

N5181B-320 脉冲序列发生器，固定永久许可证 

N5181B-303 多功能函数发生器 

 Additional Features 

N5181B-006 仪器安全特性和可拆卸存储卡 

 Documentation 

N5181B-ABJ Japan - Japanese printed users guide 

 Accessories 

N5181B-AXT Hard transit case 

1CM110A Rack mount flange kit 88.1mm H (2U) - two flange brackets, four hole plugs, Palette 2015 

1CN106A Handle kit 88.1mm H (2U) - two front handles,  Palette 2015 

1CP104A Rack mount flange and handle kit 88.1mm H (2U) - brackets, handles, hole plugs, Palette 2015 

1CR112A Rack Slide Kit, Mounting lengths 279.4-406.4mm, Palette 2015 

1CM010A Rackmount Flange Kit 88.1mm H (2U) - Two Flange Brackets, Four Hole Plugs 

1CN006A 把手套件 88.1 毫米（高）（2U）－－两个前把手 

1CP004A Rackmount Flange and Handle Kit 88.1mm H (2U) - Brackets, Handles, Hole Plugs 

1CR012A Rack Slide Kit, Mounting lengths 279.4-406.4mm 

N5181B-CVR Front panel cover