Manual Rotary Step Attenuator, DC–6 GHz

Name: Manual Rotary Step Attenuator, DC–6 GHz
Brand: QIANSPEC

0–100 dB in 1 dB steps, dial control, no power needed

Overview

A rotary dial is the fastest way to sweep level by hand. Instead of pressing combinations of keys, you turn to the number you want and read it off the dial. For calibration work and for adjusting a link while watching the instrument, that ergonomics matters.

The unit covers DC–6 GHz at 50 Ω with 0–100 dB in 1 dB steps, N-type standard with SMA available in the same family. VSWR is 1.5:1 or better and insertion loss at the 0 dB setting is 1.8 dB or better across the band.

Power handling is around 2 W average and 100 W peak as a reference figure. The metal housing works either as a bench instrument or bolted into a rack-mounted test chain.

Manual rotary step attenuator with calibrated dial covering 0 to 100 dB

Specifications

Type	Manual rotary coaxial step attenuator
Frequency range	DC–6 GHz
Impedance	50 Ω
Attenuation range	0–100 dB
Step size	1 dB
Control	Manual rotary dial, mechanically calibrated, no supply
Connectors	N-type standard; SMA available in the same family
VSWR	≤ 1.5:1, DC–6 GHz
Insertion loss	≤ 1.8 dB at 0 dB setting, DC–6 GHz
Attenuation accuracy	±0.5 dB (to 10 dB); ±0.8 dB or 3% (10–70 dB); ±3.5% (above 70 dB)
Power	≈ 2 W average, ≈ 100 W peak
Housing	Metal, aluminium or brass
Operating temperature	−20 °C to +85 °C

Features

Dial gives direct reading and fast manual sweeps
0–100 dB range in 1 dB steps
No power supply, can be adjusted while the circuit is live
Metal housing suits bench or rack-mounted use
N-type standard, SMA option available

Typical applications

Signal power calibration
Receiver sensitivity testing
Microwave system alignment

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