INTRODUCTION
The 2040 series of Signal Generators cover the frequency
range 10 kHz
to
5.4 GHz with
three models:
2040
(10
kHz to 1.35
GHz), 2041 (10
kHz to 2.7 GHz) and 2042
(10
kHz to
5.4
GHz). A dot matrix
display
with soft key
selected screen options allow flexibility
of operation and ease of use. The output may be amplitude, phase,
or frequency
modulated
with
pulse
modulation available
as an option. Modulation is
available using a combination of up to
two external signal inputs and a built-in LF source (a second internal
source
is
optional).
Microprocessor control
ensures
that
the
instruments are flexible and easy to use and
allows programming by the General Purpose Interface Bus
(GPIB). The GPIB is designed
to
IEEE Standard 488.2 and is a means of sending commands to an instrument,
via
a data bus, from
a remote controller or personal computer. The instruments can
therefore be used manually or as
part of a fully automated test system.
MAIN FEATURES
Operation
Selection
of parameters on the
screen
may
involve one or more of the numeric, hard or
soft keys or the rotary knob. Hard keys have single or dual
functions which
remain
constant
throughout, whereas soft
keys
have functions dependent on the present mode of operation.
Parameters may be set to specific values by numeric key entry,
while values may be varied in
steps of any size using the n/JJ- keys or altered by moving the knob, set to a particular sensitivity.
The SIG GEN, LF, SWEEP, MEM (memory),
A (delta) and UTIL (utility) menus are
selectable, at any point
of
operation, via the
keys
below the display panel.
Within
the display, the
soft
key functions are indicated by
labels which appear alongside the keys situated at either side
of
the display
panel.
Display
The display is
a dot
matrix liquid
crystal
panel,
with
backlighting. Carrier frequency,
modulation and RF
level
are
shown
in horizontal regions on
the principal screen. The display
features
11
-digit resolution for carrier frequency, 4-digit for RF
level
and 3-digit for modulation,
with
unit annunciators.
Contrast may be varied, using the control knob, to optimize the
viewing
angle. Differing
lighting conditions may be accommodated using the backlight
intensity function, variable from
no backlight to full intensity. A full graphical display test is available, refer to the
Service
Manual.
Frequency selection
Carrier frequency is selected
via
the soft key
option on the SIG GEN display and direct
entry via the keyboard. Alternatively, selection may be made via the General Purpose Interface
Bus (GPIB). Frequency resolution is
0.1
Hz across the
band. Carrier frequencies can be stored in
a non-volatile memory with complete recall when required. An ON-OFF key is provided to
completely
disable the output.
Output
RF
output up to
+13 dBm can be
set by
direct keyboard entry with a resolution of 0.1 dB
or better over the entire range. A high output option is
available to extend the maximum
calibrated level
to
+19 dBm on the 2040 instrument.
1-2
46882-074C
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