HP 5344S User Manual

Model 8756A
Operating Information
SECTION III
OPERATING INFORMATION
3-1. INTRODUCTION
3-2. This subsection provides complete information necessary
for the correct set-up and operation of the Model 8756A Scalar
Network Analyzer. For specific information on operating the
8756A with the Model 8350B Sweep Oscillator, please refer to
the Operating Note BASIC NETWORK MEASUREMENTS USING 8756A
SCALAR NETWORK ANALYZER AND 8350B SWEEP OSCILLATOR,
#8756A/8350B/0000-99, which follows this manual. For
additional information on using the 8756A over the Hewlett-
Packard Interface Bus {HP-IB), please refer to the 8756A
Programming Notes, also included in this section.
3-3. OPERATING CHARACTERISTICS
3-4. The Model 8756A Scalar Network Analyzer is a micropro-
cessor based receiver. It is capable of making scalar
{magnitude only) reflection and transmission measurements at RF
{radio frequency) and microwave frequencies. The Model 8756A
is programmable over the Hewlett-Packard Interface Bus {HP-IB).
Whether or not the Model 8756A is being controlled over HP-IB,
it can control a specific plotter and/or sweep oscillator
through the 8756 SYSTEM INTERFACE. A measurement with the
instrument requires the connection of detector{s) and/or
directional bridge{s) to the A, B, or R detector inputs on the
front panel, and the use of a compatible RF/microwave source.
3-5. The 8756A uses the AC detection technique in conjunction
with its detectors. This technique provides very stable
measurements even with temperature variations and RF interfer-
ence. An RF or microwave signal is amplitude modulated with a
27.8 kHz square wave, providing the stimulus to the test
device. When a signal is then detected by a compatible
detector, the 8756A filters, shapes, digitizes, and displays
the response. The 8756A provides the necessary 27.8 kHz
modulation drive from any one of three rear panel Modulator
Drive BNC outputs. They may be used to drive the external AM
input of the RF or microwave source or an external modulator
for a source without internal amplitude modulation capability.
3-6. The 8350B Sweep Oscillator provides the 27.8 kHz with its
internal square wave modulation. All 83500 series plug-ins and
most 86200 series plug-ins with the ll869A Adapter are
compatible with this internal modulation. {The Models 86220A,
86230B, 86241A, 86242A, 86250A, 86250B, 86260A, 86260B, 86260C
plug-ins require an external modulator for compatibility with
the 8756A.)
3-1

HP 5344S Specifications

General

Brand	HP
Model	5344S
Category	Measuring Instruments
Language	English