Systems manufacturers various signal generators.
We can also supply other manufacturers or used
signal generators. Our main signal
generators are listed below.
FSG Handheld, portable
The FSG series of
portable signal generators are small handheld
units. Each unit generates a synthesized
CW signal over a 100 MHz bandwidth. For
example the FSG500 operates over the 400 to 500
MHz frequency band. The FSG900 operates
over the 800 to 900 MHz band.
The output can be
setting in 12.5 kHz to 100 kHz steps (depending
upon the model) and the output is typically
accurate to 1 ppm.
The FSG2170 is a
special unit operating from 1710 MHz to 2170
All these models
are suitable for propagation testing in the
field, or any application that needs a portable
All models have
internal rechargeable batteries giving up to
five hours continuous coverage. An AC wall
adapter is also supplied allowing continuous use
or charging of the batteries.
Below is a list
of the models. Click on any title for more
20 MHz to 100 MHz in 12.5 kHz steps
100 MHz to 200 MHz in 12.5 kHz steps
200 MHz to 300 MHz in 12.5 kHz steps
300 MHz to 400 MHz in 12.5 kHz steps
400 MHz to 500 MHz in 12.5 kHz steps
800 MHz to 900 MHz in 100 kHz steps
890 MHz to 960 MHz in 100 kHz steps
1750 MHz to 1850 MHz in 12.5 kHz steps
1710 MHz to 2170 MHz in 100 kHz steps
2100 MHz to 2200 MHz in 12.5 kHz steps
2200 MHz to 2300 MHz in 12.5 kHz steps
2300 MHz to 2400 MHz in 12.5 kHz steps
2400 MHz to 2500 MHz in 12.5 kHz steps
SG1640 Signal Generator
10 µHz to 1640 MHz continuous
Frequency Steps: 10 µHz
Internal GPS Synchronized Frequency
Standard with UTC aligned 1 pps
Frequency Accuracy better than
1 x 10-10
-40 dBm to +10 dBm 50 Ω RF Output
DC to 398 MHz, 3.3 / 5V CMOS
10 MHz to 1.6 GHz LVDS Output
Low Phase Noise and low spurious
Frequency either CW or frequency
Broadband Mixer Included
The SG1640 is a 10 µHz to 1640 MHz signal
generator with outstanding frequency accuracy.
The SG1640 has a built in GPS Disciplined
frequency standard as its main frequency
reference. Frequency coverage is in three
bands; DC to 400 MHz, 400 to 800 MHz and 800 to
1640 MHz. The frequency can be set with 10
µHz frequency resolution. Frequency
accuracy, when locked to a GPS satellite signal,
is typically 1 x 10E-10 short term
and better than 1 x 10-12 long term.
Thus the SG1640 never requires
calibration as it is locked to the GPS satellite
There are multiple outputs. The RF output
is a 50 Ω, 2 MHz to 1640 MHz output.
This output can be adjusted in amplitude from
+10 dBm to -40 dBm. Logic outputs include
a DC – 398 MHz CMOS output that can be set to
either 3V3 or 5V output levels. Dual LVDS/PECL
outputs give > 300 mV p-p output level from 10
MHz to 1640 MHz.
Frequency Standard for Free!
The SG1640 has its own GPS synchronized
frequency standard (requires GPS antenna –
supplied). This GPS Synchronized timebase is
available as a 10 MHz output on the rear panel.
This output can act as a laboratory’s frequency
reference since it is locked to the global
positioning service’s set of satellites.
Accuracy is 1 x 10-10 in the short
time (< 1 sec) and as good as 1 x 10-12
in the long term (> 1 week). This 10 MHz
output can be connected to the PTS50 or DA
series of distribution amplifiers to synchronize
a complete workshop or factory. Thus all
the instruments in an entire factory can be
synchronized by the SG1640.
The SG1640 also has a general purpose,
non-dedicated mixer available via BNC
front-panel connectors. RF and LO inputs are
from 4.5 MHz to 2 GHz. Filtered IF output
bandwidth is 4.5 MHz to >350 MHz, with -20dBm RF
input and -10 to 5dBm LO input sensitivity. The
conversion gain is 0 to -3.5 dBm conversion gain
with +14 dBm damage level.
Front Panel Control and Serial Communication
The unit can be controlled via front panel keys
with readout on a 20 x 4 character LCD display.
The unit can also be controlled by a RS232
interface (USB optional). The internal GPS
receiver also has its own RS232 interface
allowing monitoring of all its settings and
functions, such as the number of satellites