宽带测址（见IEC 60268-1中6.1） 滤波器应是频率响应在图Cl所示限值范围内的带通滤波器。 带通滤波器在22.4 Hz-22.4 kH：之间其有大致不变的传输系数，在该频带以外，其衰减按（:13/T 3241规定的其中心频率为31. 5 Hz和16 000 H：的倍频程带通滤波器所规定的衰减速率衰减，其频率响应在本标准规定的限值范围内。
Type: NG 8280
Input voltage: 17 VAC.For mains connection use the submitted AC adapter only.
Input power: 7 VA
Input fuse: T400mA, 250V
Output: Sine wave 1kHz; Filtered pink noise
Output Voltage Low: 0–100mV/1kohm 0–35mVrms/1kohm
Medium: 0–1V/1kohm 0–350mVrms/1kohm
High: 0–5V/1kohm 0–1.7Vrms/1kohm
Dimensions: W = 290 mm; D = 270 mm; H = 75 mm
Weight: 1.3 kg AC adapter included
Operating temperature:+15 - +35 °C
Function ON / OFF：On/Off switch
Sine 1 KHz / Pink Noise：Switch for sine wave or filtered pink noise
Level： Switch for 3 different output levels
Adjust： Adjustment of output voltage
Phase Shift 90° / 0°： One of the outputs shifted 90° compared with the other or the outputs are in phase.
A Out, B Out：Output connectors, Phono socket and 4 mm sockets (Banana type).
Cleaning： To clean the unit, wipe with a soft, dry cloth. For stubborn dirt wet a soft cloth with a mild detergent solution, wring well, and then wipe off the dirt. Also use a dry cloth to wipe the surface dry. Do not use volatile liquids such as benzene or thinner, which are harmful to the unit.
