Weinschel
C O R P O R A T I O N
Model 3003, 3006, 3007, 3010, & 3014
Manual Step Attenuators
Rugged SMA Connector
dc to 2.5 GHz
1 Watt
Special Configurations
Some modifications to the basic configuration of the 3000
Series can be made during manufacturing. Examples of
these special configurations are shafts having special
lengths and ends; clockwise shaft rotation; modified mount-
ing arrangements; and provisions for add-on items such as
concentric potentiometers and ganged switches.
Options
Weinschel offers Model 3000 Step Attenuators with three
low-cost options. Add option number to the basic model
number when ordering.
Option-100:
Indicates knob(s) supplied.
Option-103:
PANEL SEAL -
For single-drum models only,
sealing the attenuator to a panel is achieved by use of an
"O" ring around the control shaft and seal screws to mount
the unit to the panel. Both the "O" ring and seal screws are
provided with this option. (A dual-drum panel seal option is
not available.)
Option-120: INDICATOR SWITCH -
A single-pole, rotary
switch ganged mechanically with the attenuator drum is
available to provide a closure for indicating drum position
(value of attenuation). The switch has a life of 1,000,000
operations and is suitable for use in controlling digital-logic
circuits.
Option-123:
INDICATOR SWITCH/PANEL SEAL -
This
option includes both the indicator switch and panel seal
options listed above. Only available on single drum units.
Features
o
High Reliability -
Repeatability better than 0.1 dB over
frequency range and life. Weinschel patented detent
mechanism, tested to 1,000,000 operations at +75°C,
operates dependably even down to -40°C.
o
Product Uniformity -
High volume fabrication tech-
niques, including injection molding, stamping,
broaching and thick film printing ensure a cost effective
and uniform product.
o
Low Frequency Sensitivity -
Typically 0.1 to 0.2 dB up
to 2.5 GHz.
o
Shock Resistant -
100% spring contact system with-
stands mechanical and thermal shock and eliminates
the need for epoxy or solder.
o
Wide Selection -
Wide choice of attenuation ranges
and increments in standard stock models. Single and
dual drum configurations available.
o
Knob Included -
Knobs for both single and dual drum
models are included with every attenuator. Characters
are screened on the face of the knob insert which is
coated with a clear layer of epoxy for protection.
113
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.weinschel.com
s
email: sales@weinschel.com
113
Weinschel
C O R P O R A T I O N
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
FREQUENCY RANGE:
Models 3006, 3014:
dc to 1.25 GHz
Models 3003, 3007, 3010:
dc to 2.5 GHz
INCREMENTAL ATTENUATION RANGE/STEPS:
Model 3003:
0-70 dB in 10 dB steps
Model 3006:
0-100 dB in 10 dB steps
Model 3007:
0-10 dB in 1 dB steps
Model 3010:
0-70 dB in 1 dB steps
Model 3014:
0-110 dB in 1 dB steps
POWER COEFFICIENT:
< 0.006 dB/dB/watt
TEMPERATURE COEFFICIENT:
0.0004 dB/dB/ °C
TEMPERATURE RANGE:
Operating:
-40°C to +65°C
Non-Operating: -54°C to +85°C
POWER RATING:
1 watts
average
@ 25°C ambient
temperature, derated linearly to 0 watts @ 65°C. 100 watts
peak
(5
µsec
pulse width; 0.5 % duty cycle).
ATTENUATION ACCURACY:
Model
3003
3006
3007
3010
Accuracy
+ 0.3 dB or 1% up to 60 dB
+ 2% to 70 dB
+ 0.3 dB or 1% up to 60 dB
+ 2% to 100 dB
+ 0.3 dB
+ 0.3 dB up to 10 dB)
+ 0.3 dB or 1.5% to 60 dB
+ 2 % to 70 dB
+ 0.3 dB up to 10 dB
+ 0.3 dB or 1.5% to 60 dB
+ 2% to 110 dB
MODEL NUMBER DESCRIPTION:
Example:
ROTATION STOPS:
Supplied on 10 dB step drums (not
supplied on 1 dB drums).
MAXIMUM SWR & ZERO INSERTION LOSS:
Frequency (GHz)
3003
3006
3007
3010
3014
SWR
1.20
1.20
1.30
1.35
1.30
Loss (dB)
< 0.3
< 0.2
< 0.3
< 0.7
< 0.5
INCREMENTAL PHASE SHIFT:
~0.25° per dB x f(GHz)
CONSTRUCTION:
Shafting and external hardware and
connector shells: CRES Type 303, per ASTM-A582
passivated per QQ-P-35. Housing: AL ALLOY Gold Flash.
Knob is included with each unit.
CALIBRATION:
Test data is available at additional cost.
WEIGHT:
Single drum:
Net 125 g (4.4 oz)
Dual drum:
Net 201 g (9.9 oz)
3010 - XXX
Basic Model
Number
Add Dash Number
-100 (standard unit no options)
-103 (panel seal)*
-120 (indicator switch)
-123 (indicator switch and panel seal)*
*Single Drum Units only.
3014
CONNECTOR:
SMA female connector per MIL-STD-348
interface dimensions - mate nondestructively with
MIL-C-39012 connector.
SHAFT ROTATION:
counter clockwise for increasing
attenuation
STEP ANGLE:
32.7°
DRUM CONFIGURATIONS:
Single Drum:
3003, 3006, 3007
Dual Drum:
3010, 3014
SWITCHING LIFE:
1,000,000 steps
REPEATABILITY:
+0.1 dB over frequency range and rated
life
114
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.weinschel.com
s
email: sales@weinschel.com
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