ARC Series
VARIABLE ATTENUATORS, MANUAL
& 75
/ BNC & SMA
DC to 400 MHz / 0 to 20 dB Range / Broadband / Panel Mountable / 50
PRINCIPAL SPECIFICATIONS
Frequency Performance Attenuation Flatness,
Model Range,
Band,
Range,
Pk-Pk,
Number
MHz
MHz
dB, Min. dB, Typ.
ARC-1
DC - 400
DC - 50
DC - 200
DC - 400
DC - 50
DC - 200
DC - 400
DC - 50
DC - 200
DC - 400
DC - 50
DC - 200
DC - 400
50 - 90
0 - 20
0 - 15
0 - 10
0 - 20
0 - 15
0 - 10
0 - 20
0 - 15
0 - 10
0 - 20
0 - 15
0 - 10
0 - 18
(See
Graph
Below)
(See
Graph
Below)
(See
Graph
Below)
(See
Graph
Below)
0.5
Insertion
Loss,
VSWR,
dB, Max. Max.
1.0
1.5
2.5
1.0
1.5
2.5
1.0
1.5
2.5
1.0
1.5
2.5
1.5
1.3:1
1.5:1
2.0:1
1.3:1
1.5:1
2.0:1
1.3:1
1.5:1
2.0:1
1.3:1
1.5:1
2.0:1
1.5:1
Imped-
ance,
Nom.
50
Ω
Mechanical
Configuration
& Connector
Panel-Screw Drive/SMA
ARC-2
DC - 400
50
Ω
Panel-Screw Drive/SMA
w/Knob
ARC-3
DC - 400
50
Ω
Panel-Screw Drive/BNC
ARC-4
DC - 400
50
Ω
Panel-Screw Drive/BNC
w/Knob
ARC-7
50 - 90
75
Ω
Panel-Knob Drive/BNC
Typical Performance
GENERAL SPECIFICATIONS
Resetability (Granularity):
Average Power:
Weight, nominal:
Operating Temperature:
0.2 dB typ.
0.5 Watts max.
2 oz. (56 g)
-- 55° to +85°C
General Notes:
1. The ARC 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. Similar units
are available with electronic control of attenuation in the
ARE and ARES series.
2. All Merrimac Attenuators are designed for high
reliability in accordance with applicable paragraphs of
MIL-A-24215 and can be supplied screened to meet
specific military and space applications.
11Apr96
For further information contact
MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
ARC Series
VARIABLE ATTENUATORS, MANUAL
& 75
/ BNC & SMA
DC to 400 MHz / 0 to 20 dB Range / Broadband / Panel Mountable / 50
ARC-1 (& ARC-3) Package Outline
NOTES:
1. Tolerance on 3 place decimals
±0.020(.51)
except as noted.
2. Dimensions in inches over millimeters.
3. ARC-3 as ARC-1 but with BNC connectors
ARC-2 (& ARC-4, ARC-7) Package Outlines
NOTES:
1. Tolerance on 3 place decimals
±0.020
(0.51) except as noted.
2. Dimensions in inches over millimeters.
3. Knob is shipped to customer loose.
4. Secure knob with (2) #4 screws supplied with knob.
5. ARC-4 and ARC-7 as ARC-2 but with BNC connectors.
26Feb96
F rf t e if r to c n a t
M ERRI AC /41 Faifel Pl,W estCal
o ur h r n o ma in o t c
M
ri d .
dwel,NJ,07006 / 973- 1300 /FAX 973- 0531
l
575-
575-
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