Anritsu Spectrum Master MS2720T, User Manual

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Spectrum Analyzer MG PN: 10580-00349 Rev. H 8-1
Chapter 8 — Bias Tee (Option 10)
8-1 Introduction
Option 10 provides a bias tee that is installed inside the instrument. The bias arm is
connected to a 12 VDC to 32 VDC power source that can be turned on as needed to place the
voltage on the center conductor of the instrument’s
RF In
port. This supply of bias implies it is
mostly useful when conducting two-port transmission measurements. This voltage can be
used to provide power to block down-converters in satellite receivers and can also be used to
power some tower-mounted amplifiers.
The bias can be turned on only when the instrument is in transmission measurement,
return loss, cable loss, VSWR, DTF, Spectrum Analyzer, Channel Scanner, and Interference
Analyzer mode. When bias is turned on, the bias voltage and current are displayed in the
lower left corner of the display. The 12 VDC to 32 VDC power supply is designed to
continuously deliver a maximum of 6 Watts.
Refer to
Figure 8-1 on page 8-2 for a sample TMA connection.
Note
Not all instrument models offer every option. Please refer to your instrument
Technical Data Sheet for available options.
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