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Direct Reading Attenuator, 2.0-18.0 GHz

This series of variable attenuators is our most popular type for direct reading attenuators. As in most of our units, it features a non-contacting method of varying attenuation, and calibration does not change with usage.

 

GENERAL CHARACTERISTICS

Direct Reading Models are furnished with dials individually calibrated in 1 dB increments. These units are flat with frequency.

Level Set Models are supplied with dials in degrees for reference. These units do not have attenuation vs frequency specifications. All level set models can he directly calibrated at a spot frequency; contact factory.

Special Models: Most units are manufactured to customer specifications. Accuracies can he quoted for your exact attenuation range and frequency hand; contact factory.

Type N Female Connectors are standard. For SMA female connectors, suffix model number with S.

Panel Mounting is standard on Forms 0-1028 and 0-1069. Form 0-701 can be changed to Form 0-1096 by preceding model number with P. When panel mounting these units, turn the shaft fully clockwise ( 0 dial position) and after removing the dial in the dial holder, mount the unit behind the panel with the shaft protruding thru. Then set screw the dial hub to the shaft. The dial can be slipped to align the 0 with the index line ( a separate index plate is furnished) and calibration accuracy is perfectly maintained. Because of this arrangement, the units can be oriented in any position behind the panel, while the index plate can be mounted to the panel anywhere on the periphery of the dial.

GENERAL SPECIFICATIONS

  • Frequency bands from 2.0-18.0 GHz

  • Optional dial lock on P version (Form 6921)

  • Many models exhibit flat attenuation vs frequency characteristics

  • Zero backlash

  • 0.1 dB or better resettability

  • 10 watts average power, 5 kW peak

  • Low insertion loss:
    0.5 dB max for models up to 60 dB
    l.0 dB max for models above 60 dB

  • Type Nor SMA female connectors

  • Low VSWR - l.50 max

  • Non-contacting

  • Directly calibrated or degree dial

  • Counter clockwise rotation increases loss

  • Stop at low and high loss positions

  • Material:
    Body - Aluminum
    Connectors - Stainless Steel

  • Finish:
    ARRA Blue per MIL-C-22750

*Model numbers indicate Type N connectors. For SMA connectors, suffix model number with S. Ex: 6684-10S to indicate panel- mounted version, precede
  model number with P. Ex: P6684-10
**Units 12.4-18.0 GHz are available with SMA connectors only

 
TYPICAL DIRECT READING MODELS
Frequency Range (GHz)
Attenuation Range (dB)
Insertion Loss
(Max dB)
Standard Form Factor
Model No. *
2.0-3.0 15 2.00 0-701-2 4684-20G
2.2-2.3 20 0.50 0-701-2 F4684-20
2.6-3.0 10 0.50 0-701-2 F4684-10
2.9-3.1 20 0.50 0-701-2 A4684-20
30 1.00 0-701-2 F4684-30
50 1.50 0-701-2 F4684-50
3.0-3.5 10 0.25 0-701-2 G4684-10
20 0.50 0-701-2 G4684-20
3.5-4.5 10 0.60 0-701-2 4684-10G
3.7-4.2 20 0.50 0-701-2 B4684-20
30 0.75 0-701-2 G4684-30
40 1.50 0-701-2 F4684-40
50 2.00 0-701-2 G4684-50
3.7-6.5 30 2.00 0-701-2 F4-5684-30
3.8-4.0 50 1.50 0-701-2 F4684-50A
3.8-6.0 20 1.00 0-701-2 G4684-20
3.9-4.1 100 2.00 0-1069-2 F4-5684-100
3.9-4.2 30 1.50 0-701-2 F4-5684-30A
4.0-4.5 50 1.25 0-701-2 5684-50F
4.0-5.0 20 0.50 0-701-2 F5684-20
4.2-4.4 20 0.20 0-701-2 5684-20G
40 0.75 0-701-2 F5684-40
4.4-4.8 60 1.50 0-701-2 5684-60F
4.4-5.0 70 1.75 0-1069-2 5684-70F
4.5-5.0 20 0.25 0-701-2 G5684-20
4.8-5.2 40 0.30 0-701-2 5684-40F
4.9-5.1 30 0.50 0-701-2 A5684-30F
5.0-8.0 30 1.50 0-701-2 5684-30G
5.0-6.0 50 1.50 0-701-2 G5684-50
5.1-5.9 30 1.00 0-701-2 G5684-30
5.2-5.9 100 2.00 0-1069-2 F5684-120
5.2-5.8 20 0.50 0-701-2 A5684-20
5.4-5.9 70 1.75 0-1069-2 F5684-70
100 2.00 0-1069-2 F5684-100
5.4-5.8 80 2.00 0-1069-2 F5684-80
5.5-6.1 60 1.50 0-701-2 F5684-60
5.6-5.9 50 0.50 0-701-2 F5684-50
70 1.00 0-1069-2 5684-70G
5.9-6.4 20 0.25 0-701-2 B5684-20
30 0.50 0-701-2 F5684-30
40 1.00 0-701-2 G5684-40
60 1.50 0-701-2 5684-60G
6.2-6.4 100 1.00 0-1069-2 G5684-100
6.5-7.0 30 0.50 0-701-2 A5684-30
7.1-8.4 40 1.00 0-701-4 F6684-40
7.2-7.8 20 0.50 0-701-4 F6684-20
40 0.50 0-701-4 6684-40F
50 1.00 0-701-4 6684-50F
7.7-8.4 60 2.00 0-701-4 6684-60F
7.7-7.9 50 0.50 0-701-4 6684-50G
7.8-8.4 30 0.50 0-701-4 F6684-30
7.9-8.4 20 0.25 0-701-4 6684-20G
40 0.50 0-701-4 6684-40G
50 1.00 0-701-4 F6684-50
8.0-10.0 30 1.00 0-701-4 G6684-30
8.1-8.4 70 0.50 0-1028-2 6684-70F
8.2-8.4 60 1.00 0-701-4 F6684-60
8.5-9.7 40 1.00 0-701-4 G6684-40
8.5-9.5 100 3.00 0-1028-2 6684-100F
8.7-10.2 60 1.50 0-701-4 6684-60G
8.7-9.5 70 1.00 0-1028-2 6684-70G
9.0-10.0 50 1.00 0-701-4 G6684-50
100 2.00 0-1028-2 6684-100G
9.1-9.4 50 0.50 0-701-4 A6684-50
9.2-9.5 100 2.00 0-1028-2 6684-120F
9.4-9.7 100 1.50 0-1028-2 F6684-100
9.5-10.5 30 1.00 0-701-4 6684-30G
9.6-9.8 100 1.00 0-1028-2 G6684-100
10.9-12.2 50 2.00 0-701-4 B6684-50
11.7-12.2 40 0.50 0-701-4 A6684-40
12.7-13.3 50 1.00 0-701-4 F9684-50
14.0-14.5 30 0.20 0-701-4 F9684-30
50 1.00 0-701-4 G9684-50
14.4-15.3 100 1.50 0-1028-2 F9684-100
15.0-17.0 50 1.00 0-701-4 9684-50G
15.5-16.5 30 1.00 0-701-4 G9684-30
15.7-16.2 40 0.50 0-701-4 F9684-40
DIRECT READING OCTAVE BAND MODELS
Frequency Range (GHz)
Attenuation Range (dB)
Attenuation vs (Freq ±dB)
Standard Form Factor
Model No. *
2.0-4.0 10 1.25 0-701-2 4684-10F
4.0-8.0 10 0.60 0-701-2 5684-10F
20 1.00 0-701-2 5684-20F
30 2.50 0-701-2 5684-30F
5.4-11.0 10 1.00 0-701-4 5-6684-10F
20 1.50 0-701-4 5-6684-20F
7.0-11.0 10 0.50 0-701-4 6684-10F
20 1.00 0-701-4 6684-20F
30 2.00 0-701-4 6684-30F
8.0-12.4 10 0.50 0-701-4 6684-10X
20 1.00 0-701-4 6684-20X
30 2.00 0-701-4 6684-30X
12.4-18.0 ** 10 0.50 0-701-3 9684-10FS
20 1.00 0-701-3 9684-20FS
30 1.00 0-701-3 9684-30FS
40 2.00 0-701-3 9684-40FS
UNCALIBRATED LEVEL SET MODELS
Frequency Range (GHz)
Attenuation Range (dB)
Form Factor
Standard Model No.
2.0-4.0 10 0-701-2 4684-10
20 0-701-2 4684-20
3.0-4.0 10 0-701-2 4684-10X
20 0-701-2 4684-20X
30 0-701-2 4684-30X
40 0-701-2 4684-40X
50 0-701-2 4684-50X
4.0-7.0 10 0-701-2 5684-10
20 0-701-2 5684-20
30 0-701-2 5684-30
40 0-701-2 5684-40
50 0-701-2 5684-50
70 0-1069-2 5684-70
80 0-1069-2 5684-80
90 0-1069-2 5684-90
100 0-1069-2 5684-100
5.4-11.0 10 0-701-4 5-6684-10
20 0-701-4 5-6684-20
30 0-701-4 5-6684-30
40 0-701-4 5-6684-40
50 0-701-4 5-6684-50
7.0-12.4 10 0-701-4 6684-10
20 0-701-4 6684-20
30 0-701-4 6684-30
40 0-701-4 6684-40
50 0-701-4 6684-50
60 0-701-2 6684-60
70 0-1028-2 6684-70
80 0-1028-2 6684-80
90 0-1028-2 6684-90
100 0-1028-2 6684-100
12.4-18.0 ** 10 0-701-3 9684-10S
20 0-701-3 9684-20S
30 0-701-3 9684-30S
40 0-701-3 9684-40S
50 0-701-3 9684-50S
60 0-701-3 9684-60S
70 0-1028-1 9684-70S
80 0-1028-1 9684-80S
90 0-1028-1 9684-90S

*Model numbers indicate Type N connectors.
For SMA connectors, suffix model number with S. Ex: 6684-10S
To indicate panel-mounted version, precede model number with P. Ex: P6684-10
** Units 12.4-18.0 GHz are available with SMA connectors only.