Advantest Corporation U3661 Spectrum analyzer
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is a very portable Spectrum Analyzer
That has been developed to be used for maintenance
inspections and the like in location
always from the lab bench and often out of doors in field.
is small and light (about 8.5 Kg), and it has
a color LCD display.
To further increase portability, there are three-power
A removable battery, AC/DC Adapter or an external DC supply.
In these range, the Analyzer
features a maximum resolution
of 1 kHz
(100 Hz with option 26), a residual FM of 60 Hzp-p, and
of -100 dBc/Hz (at 10 kHz from the carrier).
equipped with GPIB remote control, RS232 remote
control and memory
card function for saving and recalling waveform data and
provides the following additional features
Three Power supply
source: battery, AC/DC adapter and
external DC supply.
The ability to sweep over a wide frequency range: 9 kHz to
A precious measurement mode that uses the analyzer’s
built-in reference crystal
to measure with 1 Hz accuracy signals too weak to measure
with a Counter
Preamplifier, which is equipped with the gain 15 dB, or more
in the frequency range 9 kHz
to 3 GHz.
A memory card that can store waveform and control settings.
A digital memory LCD screen that displays signal trace
Digital memory also allows to marker functions for accurate
and easy reading of trace
A zero span mode that allows the Analyzer
to be set to a
sweep time of 50 s.
Two independent channels of digital memory for simultaneous
display of two traces.
Computer-controlled operation using GPIB command set.
is equipped with delay-sweep function.
Option 20 is the high stability 10 MHz Oscillator
Option 26 is the active Filter
to have 100 Hz to 300 Hz
Option 72 is TV signal demodulator, such as NTSC, PAL and SECOM.
Option 74 is tracking Generator
to allow measuring amplitude
characteristics of devices.
3.34 Mbytes (3497317 Bytes)
19 November 1999
Scanned document, all readable.
17 August 2016
This manual provides information to perform unit or assembly
troubleshooting included removal/installation procedures of
module assemblies and a parts list.
This manual is intended for use by trained service personnel
Detailed operation and programming information is excluded
from this manual.
Including only sufficient information for service purpose.
For more detailed
operation information, refer to the U3661
The information in this manual is for use of Service Trained
To avoid electrical shock, do not perform any procedures in
this manual or do any servicing to
unless you are qualified to do so.
This manual has information the following six chapters.
1. GENERAL INFORMATION
It provides description of this manual and brief product
Specification and Test equipment required for performance
2. THEORY OF OPERATION
It provides the principle of measurement.
3. PERFORMANCE VERIFICATION TEST PROCEDURE
It provides the procedures for performance verification test
verification test record sheet.
4. ADJUSTMENT PROCEDURE
It provides the adjustment procedures for instruments, in
case of required
It provides the diagnostic procedure including the removal
of defective module
and installation procedures.
6. PARTS LIST
It provides the replaceable parts list.