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Measuring step attenuator D1-29

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Measuring step attenuator D1-29
The device replaces the devices for checking the attenuators D1-13A and D1-25.
D1-29 is a step attenuator with a range of attenuation from 0 to 110 dB with a step of 10 dB, operating in the frequency range from 0 to 150 MHz.
The device consists of a housing with damping cells and a switch with a counting device. The housing contains coaxial input and output connectors, as well as additional connectors "40 dB" and "80 dB", necessary for the verification of the device.

Technical specifications

Operating frequency range 0 – 150 MHz
Difference attenuation setting range (after 10 dB) 0 – 110 dB
Input electrical resistance to direct current 50 ± 0.1 ohms
The output electrical resistance to direct current when connected to the load input is 50 ± 0.1 ohms 25 ± 0.1 ohms
The main absolute error of the difference attenuation setting relative to the 0 dB mark at direct current ± (0.002 - 0.02) dB
The main absolute error of the difference attenuation setting relative to the 10 dB mark in the frequency range up to 30 MHz ± (0.004 - 0.9) dB
The main absolute error of the difference attenuation setting relative to the 10 dB mark in the frequency range over 30 to 150 MHz ± (0.09 - 3.0) dB
The maximum permissible value of the electrical voltage (DC or AC) at the input of the attenuator 3 In
the operating temperature range from 5 to 40 ° C
Overall dimensions, mm 149x95x149
Weight, not more than 3 kg