DESCRIPTION OF EQUIPMENT
The Model 5000A accepts a variety of swept RF generator
plug-in units operating over the 100 kilohertz to 26.5
gigahertz region. Each RF plug-in is supplied with a plastic
frequency dial scale calibrated for the range of the
plug-in. This dial scale is attached to the mainframe with
the plug-in for simple frequency range changes.
Major subassemblies of the 5000A are the power supply
module, the power supply regulator boards and rear-panel
mounted regulator transistors, two sweep generator boards,
three mode generator boards, a marker generator board, the
dial system assembly, and front-panel mounted operating mode
switches. Most of the printed circuit assemblies are
interconnected with the 5000A through chassis-mounted
1-3. CAPABILITIES AND PERFORMANCE
The Model 5000A provides versatile power supply and control
signal outputs for operation of swept microwave RF sources
to cover the electromagnetic spectrum presently in common
use. These RF sources are intended for use in laboratory or
field tests of electronic communications components,
subsystems, and systems by offering a precisely-calibrated
alternative to time-consuming point-by-point testing of
amplitude versus frequency characteristics over wide ranges.
The power supplies provide four separate outputs for maximum
versatility of plug-in operation.
Detailed performance specifications for the Model 5000A are
given in Table 1-1. Detailed performance specifications for
the various RF and sweeping current supply plug-in units are
supplied in the applicable manuals.
Salient features of the 5000A are summarized in the
following paragraphs. ,
1-3.1 External Power Requirements
The 5000A operates from sinusoidal single-phase 50 or 60
Hertz (to 400 Hertz on special order) power lines supplying
nominal levels of 94 to 127 or 187 to 253 volts rms (root
mean square). These supply voltages are available throughout
most of the world. The IEC-approved power line connector on
the chassis of the 5000A will readily mate with a variety of
power cables available locally to meet specific power
connector pin configurations. A power cable is supplied for
connection to grounded 115 volt power line receptacles.
1-3.2 Output Range
The frequency range of the 5000A is determined by the RF
plug-in unit used. Each RF plug-in covers a single band with
the operating frequency indicated on a slide rule dial
accurate to within one percent of the dial reading.
A sweeping current power supply plug-in, Model 5222A, is
also available for the 5000A. The output current, up to one
Ampere, is indicated on the supplied dial scale.
1-3.3 Wide Sweep Capacity
Some RF plug-in units are available to cover extreme
bandwidths. These units sweep over a range of several
octaves in a single band.
1-3.4 Multiple Sweep Modes
Several operating modes are available: F1-F2 sweep mode,
commonly called wide sweep mode, allows a frequency sweep to
be started at any desired frequency within the range of the
plug-in and terminated at any other such frequency. For
narrow sweeps, Fc ± AF sweep mode (commonly called AF mode)
allows the output of the plug-in to be swept or deviated
symmetrically about a selected center frequency. The center
frequency and deviation are calibrated functions. A
non-swept (CW) output mode is also available, or the
frequency may be controlled by a voltage source external to
1-3.5 Extended Sweep Rates
Sweep repetition rates of less than 10 milliseconds to over
100 seconds are available, as is manual sweep control
1-3.6 Sweep Trigger Modes
Each frequency sweep may be initated internally at the end
of the previous sweep, synchronized with power line
frequency, initiated manually with a front-panel pushbutton,
or initiated electrically with an external triggering signal.
1-3.7 Amplitude Modulation Modes
The output amplitude of the RF plug-in is controlled by
switches on its own front panel to turn the output on and
off at a one kilohertz rate, turn the output off only during
sweep retrace time, reduce the output amplitude at marker
points, or modulate the amplitude with the signal from an
external leveler. An external amplitude control signal may
be coupled through the rear-panel EXT'L A.M. jack directly
to the RF plug-in.
1-3.8 Display Blanking Output
An output of plus 19 volts available during the sweep
retrace period or while awaiting a sweep trigger signal may
be used to eliminate the trace from the CRT display unit or
1-3.9 Optional Configurations
1-3.9.1 OPTION Ml NEGATIVE BLANKING. Model 5000A mainframes
equipped with this option have a blanking output pulse with
an amplitude of approximately minus 19 volts; the blanking
pulse output of a standard 5000A is approximately plus 19 volts.
1-3.9.2 OPTION M3 POSITIVE TUNING REFERENCE. Model 5000AM3
has an adjustable output of zero to plus 10 volts (minimum)
to zero to plus 35 volts (maximum) proportional to the RF
output frequency of the plug-in. This output is used to
drive some swept response analyzers and network analyzers
such as the Hewlett-Packard 8410B and its accessories. The
positive tuning reference output is in addition to the
standard zero to plus 10 volt sweep output and the zero to
minus 10 volt frequency volts output present in all SOOOA’s.
Option M3 is not available in units equipped with Option M10,
1-3.9.3 OPTION M10 REMOTE CONNECTORS, Two multi-pin
connectors added to the rear panel of the 5000A carry sweep,
blanking, and marker output signals to a display unit and
operating power to an accessory unit. The 5000AMI0 is
provided in many Systron-Donner test sets to reduce
interconnection cabling between it and the Model 7000M1
Display Unit and to provide operating power for the Model
1206 IF Amplifier. Option M10 is not available in unite
equipped with Option M3.
1-3.9.4 OPTION M16 EXTENDED POWER LINE FREQUENCY RANGE.
Model 5000A mainframes are normally supplied for operation
from 50 or 60 Hertz power sources. Model 5000AM16 will
operate from power line frequencies of 50 to 400 Hertz. (400
Hertz power lines are commonly found on aircraft and ships.)