Page 1
RF Safety
Test Solutions
SatCom
Products
Power Meters
and Monitors
Active
Components
Fiber Optic
Products
RF Switching
Products
Passive
Components
dept26
Products
50 Years of
Excellence
* Field-installable Mounting Kit must be purchased
separately as Part No. 43017200
NOTE: Rack Mounting Kit accommodates all attenuator series housings.
Variable Attenuators
DC-18 GHz
Thumb Wheel
and Panel Mount
Step Attenuators
Broadband DC-18 GHz
·
Small Size
·
Precision Construction/High Reliability
·
Precision 1 dB steps, to 69 dB
·
Panel Mount or Stand Alone*
·
Specifications
Model Model Model
Type N Female Connectors 741 743-60 745-69
SMA Female Connectors 4741 4743-60 4745-69
Frequency Range (GHz) DC-18 DC-18 DC-18
0-9dB 0-60 dB 0-69 dB
Attenuation (dB) in 1-dB steps in 10-dB steps in 1-dB steps
Step Deviation Step Deviation Step Deviation
0 dB 0.5 0 0.5 0 1.0
1 dB ±0.5 10 ±0.5 1-9 ±0.5
2 dB ±0.5 20 ±0.7 10-19 ±1.0
4 dB ±0.5 30 ±0.9 30-39 ±1.4
Relative (dB) 3 dB ±0.5 40 ±1.0 20-29 ±1.2
Attenuation Deviation 5 dB ±0.5 50 ±1.3 40-49 ±1.5
6 dB ±0.5 60 ±1.5 50-59 ±1.9
7 dB ±0.5 60-69 ±2.0
8 dB ±0.5
9 dB ±0.5
Resettability/per drum (dB) <0.05 <0.05 <0.05
DC-12.4 GHz;1.50
VSWR (Max) 1.50 1.50 12.4-18 GHz;1.65
Impedance (Ohms) 50 50 50
Temperature Stability
(dB/dB/°C) 0.0001 0.0001 0.0001
Power:
Average (Watts) 2 2 2
Peak (kW at duty
cycle of 0.0001) 0.2 0.2 0.2
435 MORELAND ROAD • HAUPPAUGE, NY 11788
USA TEL: (1) 631 231-1700 • INT’L TEL: (1) 631 231-1390 • FAX (1) 631 231-1711
E-MAIL: nardaeast@L-3COM.com • www.nardamicrowave.com
81
Page 2
dept26
Products
Passive
Components
RF Switching
Products
Fiber Optic
Products
Active
Components
Power Meters
and Monitors
SatCom
Products
RF Safety
Test Solutions
Variable Attenuators
Ordering Information
1. Prefix "7" denotes Type N Stainless Steel Connectors (741,743, 745)
Prefix "47" denotes SMA Stainless Steel Connectors (4741, 4743, 4745)
2. All units are bidirectional.
Outline Drawings
50 Years of
Excellence
Model No. A B (MAX) CONN
741 1.125
743-60 1.437
745-69 2.250
Model No. A B (MAX) CONN
(28.75)
(36.50)
(57.15)
.781
(19.83)
TYPE N
FEMALE
Dimensions in parentheses are in millimeters and for reference only.
Connectors made without interference per MIL-STD-348.
Typical Rack Mount Configurations
For 740 Series Thumb Wheel Step Attenuators
4741 1.125
(28.75)
4743-60 1.437
(36.50)
4745-69 2.250
(57.15)
SINGLE AND DUAL
STAND ALONE
TYPICAL
.437
(11.10)
TYPE SMA
FEMALE
TYPICAL PANEL
CUTOUT SINGLE*
82
TYPICAL PANEL
CUTOUT DUAL*
* Requires Mounting Kit, Part No. 43017200
All dimensions are max. unless otherwise specified.
USA TEL: (1) 631 231-1700 • INT’L TEL: (1) 631 231-1390 • FAX (1) 631 231-1711
E-MAIL: nardaeast@L-3COM.com • www.nardamicrowave.com
435 MORELAND ROAD • HAUPPAUGE, NY 11788
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