Hameg Instruments HM8131-2 Handbuch Seite 26

English
Function Generator HM 8131-
I Direct Digitally Synthesized Function Generator
I Frequency Range: 100µHz to 15 Mhz
I Resolution: 100µHz
I Memory Card for Signal Registration
The HM8131-2 is a high performance, yet affordable, 15MHz
Synthesized Function Generator. The instrument uses direct
digital synthesis to generate standard waveforms such as sine,
square, ramp, triangle and noise, as well as arbitrary signals with
synthesized frequency accuracy.
Direct keyboard entry or signal parameter adjustment via
rotary control simplifies operation. Major settings like frequency,
amplitude, offset voltage and sweep parameters can be directly
input. Input of other functions are menu driven. Two lines of 24
characters each are displayed on a backlit LCD in order to present
a clear indication of the instrument settings. To change a setting,
all that's needed is to make a selection from the LCD and push the
corresponding buttons.
The HM 8131-2 can be remote controlled via the standard,
built-in RS232 serial interface or by an optional IEEE-488-
Interface which in that case replaces the serial interface. Interfaces
are easily interchangeable at the field level. A standard S-RAM
memory card enables the storage and recall of Arbitrary
Waveforms up to a total capacity of 1MB.
Frequencies are displayed as a 12 digit presentation with
100µHz resolution. This remarkable high resolution is important,
for example, for the stimulation of mechanical vibration. The
standard timebase provides 2 ppm/°C frequency stability, thus
making a frequency counter for checking the frequency
unnecessary. An optional TCXO timebase provides 0.5 ppm
stability. Even greater long term stability can be achieved using an
external timebase such as the HM8125 GPS Frequency
Standard.
Linear and logarithmic frequency sweeps are quickly specified
by entering start and stop frequencies and the sweep time. The
entire frequency span of the HM8131 can be covered in one sweep.
Sweeps can be triggered from the front panel, the internal rate
generator, the external trigger input or the interface. Any waveform,
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I Arbitrary Waveform Generation
I Keyboard Entry or Rotary Control
I RS232-Interface included as Standard
incl. arbitrary waveforms, may be triggered. A burst can be generated
by means of an external trigger signal.
The standard waveforms can be amplitude modulated, either
internally or externally. The HM8131-2 also provides FSK and PSK
functions. Signal phase can be adjusted down to 0.1 degree
resolution. The phase relationship between multiple HM8131-2
sharing the same timebase is fixed with 0.1 degree phase accuracy
lock.
The ability to generate arbitrary waveforms is another advantage
of the HM8131-2. Arbitrary waveforms are generated at sample
rates of 40 Ms/s with 12 bits (0.025%) vertical resolution. The
maximum output frequency is 10 Mhz. The HM8131-2 can store
records as long as 4K or 16 K points. The waveforms can be point
or vector edited from the front panel. Data for waveforms can be
downloaded from any PC or transfered via memory card.
The output of the HM8131-2 has the low phase noise inherent
to DDS (Direct Digital Synthesis). The wideband output amplifier
provides low distortion as well as excellent pulse response. It can
drive 10Vpp into 50 Ohms (20Vpp into high impedance loads) with
less than 10ns risetime. The output is protected against externally
applied voltages and is short-circuit proof. The output voltage can
be read with a 3½ digit resolution from the LCD. Offset voltage is
adjustable up to ±5V.
The HM8131-2 contains non-volatile memory to store up to
10 complete set-ups of the instrument. This allows commonly used
waveshapes, frequencies and modulations to be instantly recalled.
In addition one 4k word arbitrary waveform can be stored as well
as the power-down condition.
The HM8131-2 is a high precision instrument with easy
operation, making it the ideal choice for a wide range of applications
like product line testing, research and development, service, education
and training. And best of all, the HM8131-2 is priced well below
conventional function generators offering far less performance.
of major parameters
Subjest to change without notice