Weinschel
C O R P O R A T I O N
MODELS 3230, 3231, 3230T & 3231T
RF Programmable Attenuators
dc to 1.2 GHz
1 Watt
Ideal for Wireless/Cellular Applications.
MAXIMUM CHARACTERISTIC ZERO LOSS (dB):
Frequency Range (GHz)
3230-63
3230-90
3231-63.75
dc - 0.5
0.5 - 1.0
1.0 - 1.2
1.75
3.25
4.25
1.75
4.10
4.90
RATED SWITCH LIFE: 5 million operations per cell (typ)
SWITCHING TIME: 8 msec. maximum @ nominal rated
voltage.
CYCLING RATE: 5 Hz maximum
OPERATING VOLTAGE: +11 V to +16 V
+12 V to +17 V (TTL opt -1)
OPERATING CURRENT: 16 mA maximum per cell
TEMPERATURE RANGE (Operating): -40 to +70°C
POWER RATING: 1 watt average, 50 watts peak (5 msec
pulse width; 1% duty cycle)
CONNECTORS: SMA female connectors per MIL-STD-
348 interface dimensions - mate nondestructively with
MIL-C-39012 connectors.
Features
o
Cost Effective design for Wireless/Cellular
Applications
o
Available in 6 or 8 Cell Configurations:
90 dB/10 dB steps
63.75 dB/0.25 dB steps
63 dB/1 dB steps
o
o
Optional TTL or SmartStep Interface
Custom Configurations including bus controlled
attenuator subsystems
CONTROL TERMINALS: 0.040 inch. (1 mm) diameter
solderable leads
CONSTRUCTION:
Specifications
NOMINAL IMPEDANCE: 50 Ω
FREQUENCY RANGE: dc to 1.2 GHz:
Housing:
Aluminum
Connectors:
Stainless steel body and
beryllium copper contacts.
MAXIMUM SWR:
WEIGHT:
3230
3231
3230T
3231T
125 g (4.5 oz)
155 g (4.9 oz)
219 g (5.9 oz)
189 g (5.5 oz)
Frequency Range (GHz)
SWR
dc - 1.0
1.0 - 1.2
1.30
1.45
ACCESSORIES
CELL CONFIGURATIONS:
SmartStep Interface: The Model 8210A SmartStep
Interface provides a flexible, low cost solution for the oper-
ation of programmable step attenuators and other
electromechanical devices under computer control.
Designed to interface to Weinschel's new line of SmartStep
programmable attenuators, the 8210A represents a new
concept in device control applications for bench test and
subsystem designs. The 8210A provides a high-level inter-
face from various industry standard communications
interfaces, including IEEE-488 and RS232/RS422/RS485,
to the SmartStep's serial Driver Interface Bus.
Model
Number
NO.
Attenuation
Cell
Increments
(dB)
Cells Range/Steps
(dB)
3230-63
3230T-63
6
6
8
63/1
1, 2, 4, 8, 16, 32
3230-90
3230T-90
90/10
10, 10, 10, 20, 20, 20
3231-63.75
3231T-63.75
63.75/0.25 0.25, 0.5, 1, 2, 4, 8,
16, 32
INCREMENTAL ATTENUATION ACCURACY:
Frequency
Range (GHz)
dc - 1.0
Accuracy
+ 0.2 dB or 2.0%
+ 0.3 dB or 2.0%
1.0 - 1.2
145
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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