IM-275
GENERAL
This manual provides general installation instructions and
wiring data to be used as an aid in installing the Aeroflex /
Weinschel Model 150T, 151T and 152T Series SmartStep
Programmable Attenuators into any subsystem or applica-
tion. Also included are specifications and other technical
data to help in the installation and operation of your 150T Series
Programmable Attenuator.
Each attenuator consists of a cascaded assembly of switched attenuator cells
(Figure 1) and a internal TTL interface. The attenuator elements located in the
attenuator cell are created by a thin-film process which provides exceptional long-
term stability, low power and temperature coefficients. This series of step
attenuators uses a reed switching structure that provides rapid switching togeth-
er with low insertion loss.
Figure 1. SmartStep Driver Circuitry
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APITECH [ API Technologies Corp ]
