Rotary Step Attenuators

Variable Stepped Rotary Attenuators

ATM now supplies a limited line of Rotary Step Attenuators to compliment our wide variety of Microwave RF Continuously Variable Attenuators.

ATM Rotary Stepped Attenuators have 1dB or 10dB steps, 30 degrees with stops at minimum and maximum. Most ATM step attenuator models can be supplied with SMA, Type-N or BNC connectors.

Coaxial rotary attenuators are manufactured with frequency ranges from DC-2500 MHz with low insertion loss and VSWR from 1.2:1 to 1.5:1 depending on the model.

Please call us with your rotary stepped attenuator requirements and discuss your needs with one of our design engineers.

Rotary Step Attenuators - Standard Models - Single Dial

Most coaxial rotary attenuator units can be supplied with SMA (standard), Type-N or BNC connectors, see below for details
Attenuation increases in clockwise direction
30 degrees with stops at minimum and maximum
Outline drawings are provided for each model

RF INPUT POWER:	2 watt average 1 kW peak
RF CONN:	SMA Female std.
IMPEDANCE:	50 Ohms
OPERATING TEMPERATURE:	-20° C to +85° C

Model No.* AS013-10-1

AS013-10-1 Coaxial Rotary Stepped Attenuator

(Click for Outline PDF)

Model No.* AS013-60-10

AS013-60-10 Coaxial Rotary Stepped Attenuator

(Click for Outline PDF)

Model No.** AS013-70-10

AS013-70-10 Coaxial Rotary Stepped Attenuator

(Click for Outline PDF)

Freq Range............DC-2500 MHz
Atten Range.........0-10 dB in
1 dB steps

Attenuation Accuracy:
DC-1100 MHz.......+/-0.25dB max
1100-2200 MHz....+/-0.5dB max
2200-2500 MHz....+/-0.6dB max

VSWR:
DC-1100 MHz...........1.25:1 max
1100-2000 MHz.........1.5:1 max

Insertion Loss:
DC-1100 MHz..........0.25dB max
1100-2000 MHz.......0.5dB max

Freq Range..........DC-2200 MHz
Atten Range.......0-60 dB in
10 dB steps

Attenuation Accuracy:
DC-500 MHz........+/-0.5dB or 1%
500-1000 MHz.....+/-0.5dB or 2%
1000-2000 MHz...+/-0.5dB or 3%

VSWR:
DC-1000 MHz...........1.2:1 max
1000-2000 MHz........1.4:1 max

Insertion Loss:
DC-1000 MHz..........0.3dB max
1000-2000 MHz.......0.5dB max

Freq Range..........DC-2500 MHz
Atten Range........0-70 dB in
10 dB steps

Attenuation Accuracy:
DC-500 MHz.......+/-0.5dB or 1%
500-1000MHz.....+/-0.5dB or 2%
1000-2500MHz...+/-0.5dB or 3%

VSWR:
DC-1000 MHz...........1.2:1 max
1000-2000 MHz........1.4:1 max
2000-2500 MHz........1.5:1 max

Insertion Loss:
DC-1000 MHz..........0.3dB max
1000-2000 MHz.......0.5dB max
2000-2500 MHz.......0.6dB max

*These Coaxial Rotary Models available with SMA-F connectors only.
**For Type N Female connectors change P/N to AS023 Example: AS013-70-10 becomes AS023-70-10
For BNC Female connectors change P/N to AS073 Example: AS013-70-10 becomes AS073-70-10

Dual Concentric Rotary Stepped Attenuators - Standard Models
AS113-50-1 Coaxial Dual Concentric Stepped Rotary Attenuator *Model No. AS113-50-1 Dual Concentric Rotary Stepped Attenuator** (Click for Outline PDF)	AS113-110-1 Coaxial Dual Concentric Stepped Rotary Attenuator *Model No. AS113-110-1 Dual Concentric Rotary Stepped Attenuator** (Click for Outline PDF)
Freq Range............DC-2500 MHz Atten Range.........0-50 dB in 1 dB steps Attenuation Accuracy: DC-500 MHz...........+/-0.2dB or 1% 500-1000 MHz........+/-0.3dB or 3% 1000-2500 MHz......+/-0.4dB or 3% VSWR: DC-500 MHz..............1.2:1 max 500-1000 MHz...........1.4:1 max 1000-2500 MHz.........1.5:1 max Insertion Loss: DC-1000 MHz..........0.5dB max 1000-2500 MHz.......1.0dB max	Freq Range............DC-2200 MHz Atten Range.........0-110 dB in 1 dB steps Attenuation Accuracy: DC-500 MHz...........+/-0.5dB or 1% 500-1000 MHz........+/-0.5dB or 3% 1000-2200 MHz......+/-0.5dB or 3% VSWR: DC-500 MHz..............1.2:1 max 500-1000 MHz...........1.4:1 max 1000-2200 MHz.........1.5:1 max Insertion Loss: DC-1000 MHz..........0.5dB max 1000-2500 MHz.......1.0dB max
Standard Coaxial Rotary Models have SMA Female connectors & P/N numbers begin with AS113* For Type N Female connectors change P/N to AS123 Example: AS113-50-1 becomes: AS123-50-1 For BNC Female connectors change P/N to AS173 Example: AS113-50-1 becomes: AS173-50-1

Dual Concentric Rotary Stepped Attenuators - Standard Models

AS113-50-1 Coaxial Dual Concentric Stepped Rotary Attenuator

Model No.* AS113-50-1
Dual Concentric Rotary Stepped Attenuator
(Click for Outline PDF)

AS113-110-1 Coaxial Dual Concentric Stepped Rotary Attenuator

Model No.* AS113-110-1
Dual Concentric Rotary Stepped Attenuator
(Click for Outline PDF)

Freq Range............DC-2500 MHz
Atten Range.........0-50 dB in 1 dB steps

Attenuation Accuracy:
DC-500 MHz...........+/-0.2dB or 1%
500-1000 MHz........+/-0.3dB or 3%
1000-2500 MHz......+/-0.4dB or 3%

VSWR:
DC-500 MHz..............1.2:1 max
500-1000 MHz...........1.4:1 max
1000-2500 MHz.........1.5:1 max

Insertion Loss:
DC-1000 MHz..........0.5dB max
1000-2500 MHz.......1.0dB max

Freq Range............DC-2200 MHz
Atten Range.........0-110 dB in 1 dB steps

Attenuation Accuracy:
DC-500 MHz...........+/-0.5dB or 1%
500-1000 MHz........+/-0.5dB or 3%
1000-2200 MHz......+/-0.5dB or 3%

VSWR:
DC-500 MHz..............1.2:1 max
500-1000 MHz...........1.4:1 max
1000-2200 MHz.........1.5:1 max

Insertion Loss:
DC-1000 MHz..........0.5dB max
1000-2500 MHz.......1.0dB max

*Standard Coaxial Rotary Models have SMA Female connectors & P/N numbers begin with AS113
For Type N Female connectors change P/N to AS123 Example: AS113-50-1 becomes: AS123-50-1
For BNC Female connectors change P/N to AS173 Example: AS113-50-1 becomes: AS173-50-1

Coaxial Rotary Stepped Attenuators

Variable Stepped Rotary Attenuators