Tektronix 2706 Instruction Manual page 6

Preface
Welcome
About this Manual
2706 RF Preselector
This preface describes the features of the Tektronix 2706 stepped Radio
Frequency Preselector. It also tells you how to use this manual and what you
should know before you use the Preselector.
Congratulations on your purchase of a 2706 RF Preselector. This instrument
improves the flexibility and accuracy of your spectrum analyzer measurements,
and is especially useful for EMI applications.
Some of the outstanding characteristics of the Preselector are:
H Multiple filters – the Preselector has 7 bandpass filter steps covering the
range from 9 kHz to 1000 MHz, and a high-pass filter covering the range
from 1000 MHz to 1800 MHz.
H Reduced distortion – the Preselector limits potentially distorting input to a
spectrum analyzer by attenuating signals outside the frequency range of
interest.
H Increased broadband dynamic range – the Preselector increases sensitivity to
low-level signals by attenuating strong signals outside the frequency range of
interest.
H Manual or remote operation – you can operate the Preselector using its
front-panel controls or a GPIB equipped controller or computer.
H Bypass mode – you can remove the Preselector from the testing circuit
without disconnecting it.
H Convenient installation – the Preselector mounts below Tektronix 271X-
Series Spectrum Analyzers with the optional mounting plate and rigid
coaxial cable assembly (see the Parts List in Appendix D).
This manual contains the following sections:
H Chapter 1, "Introduction," lists the features of the Tektronix 2706 RF
Preselector and what you need to use the Preselector.
H Chapter 2, "Using the Preselector," describes how to control the Preselector
manually or using a GPIB controller.
iii