Typical Performance

General Notes:

1. The ARS series consists of continuously

variable attenuators utilizing compensated

Bridged Tee Networks to vary signal power.

These constant impedance, very broadband

attenuators are designed to cover frequencies

from DC to 400 MHz.

2. Similar units are available with analog

electronic control of attenuation in the AFF and

AEF series and digital control in the AD series.

Further varieties are also available in the ARC

series including a 75

Ω model for baseband

communications systems

3. For special requirements, Merrimac can

supply units with special characteristics such

as the long shaft version, ARS-1A, which was

developed for requirements using a knob.

4. The ARS series can be supplied screened

for high reliability to meet specific military and

space applications.

PRINCIPAL SPECIFICATIONS

Frequency

Performance

Attenuation

Insertion

CW

Weight,

Model

Mechanical

Range,

Bandwidth,

Range,

Loss,

VSWR, Power,

oz. (g),

Number

Configuration

MHz

MHz

dB, Min.

dB, Max.

Max.

W, Max.

Nom.

ARS-1

Side Screw Drive/

DC - 400

DC - 50

0 - 20

1.0

1.5:1

0.5

0.7 (20)

PC Plug-In

DC - 200

0 - 13

1.5

1.8:1

DC - 400

0 - 8

2.5

2.2:1

ARS-2

Top Screw Drive/

DC - 400

DC - 50

0 - 20

1.0

1.5:1

0.5

1 (28)

PC Plug-In

DC - 200

0 - 13

1.5

1.8:1

DC - 400

0 - 8

2.5

2.2:1

GENERAL SPECIFICATIONS

Resetability (Granularity):

0.2 dB

Impedance:

50

Ω nom.

Operating Temperature:

-- 55° to +85°C

ARS Series

VARIABLE ATTENUATORS, MANUAL

DC to 400 MHz / Up to 20 dB Range / Low Insertion Loss / Broadband / PC Mount

28Jun02