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參數資料
| 型號： | AC118A-50-72 |
| 元件分類： | 衰減器 |
| 英文描述： | 0 MHz - 4000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 0.7 dB INSERTION LOSS-MAX |
| 文件頁數： | 1/3頁 |
| 文件大小： | 236K |
| 代理商： | AC118A-50-72 |
5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116
web: www.weinschel.com email: sales@weinschel.com
119
4/30/02
Model 115A thru 119A
dc to 18.0 GHz
Manual Step Attenuators
2 Watt
Choice of Type N, TNC, SMA Connector
Features
o Safety Mechanical Stop - A mechanical stop between
maximum and 0 attenuation positions on all models
prevents damage to the mechanical drive as well as
preventing large power changes that could cause dam-
age to sensitive equipment.
o Choice of Attenuation Ranges - Five standard atten-
uation ranges are available: 0-9 dB, 0-69 dB, and 0-99
dB in 1 dB steps, and 0-60 dB and 0-90 dB in 10 dB
steps.
o Broadband - All models are available in a choice of 3
frequency ranges: dc-4, dc-12.4, and dc-18 GHz (dc-16
for units with TNC connector).
o Right-Angle Drive - The center conductor of the con-
nector is perpendicular to the control shaft, offering
greater flexibility of applications: panel mounting or
bench setup. All models are bidirectional.
o Custom Configurations Available Upon Request.
o Low Deviation from Nominal Value - These Mini Step
Attenuators have flat frequency response over speci-
fied bands and excellent attenuation accuracy.
Deviation from nominal value is low at all settings.
o Excellent Repeatability and Long Life Switch -
Repeatability is better than 0.05 dB to 18.0 GHz for
over 1,000,000 switchings of the drum.
Description
The Weinschel Corporation Models 115A through 119A are
a series of broadband, step attenuators in a right-angle
drive configuration, where the center conductor of the con-
nector is perpendicular to the control shaft. They feature
excellent performance characteristics suitable for use in
high reliability 50 ohm systems and applications requiring
extra-small components for the precision control of power in
discrete steps. They can be used either as input or output
attenuators in signal sources, receivers, field strength
meters, spectrum analyzers, etc.
Specifications
NOMINAL IMPEDANCE: 50
FREQUENCY RANGE (add Model No. Prefix to
Designate Range):
All Models:
dc to 4.0 GHz (AC)
dc to 18.0 GHz (AF)*
*dc to 16.0 GHz for TNC connector
STANDARD INCREMENTAL ATTENUATION RANGE:
Model 115A:
0 to 9 dB in 1 dB steps
Model 116A:
0 to 60 dB in 10 dB steps
Model 117A:
0 to 69 dB in 1 dB steps
Model 118A:
0 to 90 dB in 10 dB steps
Model 119A:
0 to 99 dB in 1 dB steps
MAXIMUM SWR (Models 117A & 119A):
Frequency
Range (GHz)
SMA, N
TNC
dc - 4
1.35
dc - 18
1.70
POWER RATING: 2 watts average to 25°C ambient
temperature, derated linearly to 1 watt @ 54°C. 200 watts
peak (5
sec pulse width; 0.5% duty cycle)
POWER COEFFICIENT: < 0.005/dB/dB/watt
TEMPERATURE COEFFICIENT: < 0.0004/dB/dB/°C
TEMPERATURE RANGE: Operating:
0°C to +54°C
Nonoperating: -54°C to +54°C
INCREMENTAL PHASE SHIFT: ~0.5° per dB x f(GHz)
REPEATABILITY: Better than 0.05 dB across frequency
band for switch life.
SWITCH LIFE: Over 1,000,000 steps
INDEXING: 36°
MAXIMUM SWR (Models 115A, 116A, & 118A):
Frequency
Range (GHz)
SMA, N
TNC
dc - 4
1.25
1.30
dc - 18
1.60
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