Fig. 2.2: Rear Panel Of The Hmf2550 / Hmf2525 - Hameg HMF2550 Handbuch

20
21 22

Fig. 2.2: Rear panel of the HMF2550 / HMF2525

3 Short description HMF2525 / HMF2550
The new HMF series arbitrary function generators with 25 MHz
and 50 MHz respectively at 250 MSample/s provide 14 bit resolu-
tion. Featuring a 9 cm QVGA-TFT display and 8 ns rise time the
new instruments from Hameg set the standard in their class.
Besides standard waveforms like sine, rectangle and triangle
(symmetry 1 ... 99%) , the HFM2525 and HFM2550 provide users
with powerful arbitrary signal functionality. On the one hand
users can choose among numerous pre-defined signal shapes
like sin(x)/x, white or pink noise; on the other hand they can
take advantage of customer specific, arbitrary curve shapes
with a bandwidth of up to 25/50 MHz and a signal length of up
to 256 kPts. Arbitrary waveforms can be developed with the
included PC Software and transfered to the instrument either
over the HO720 interface, or, in CSV format, via the front side
USB connector.
Moreover, stored waveforms, derived e.g. from an oscilloscope,
can be loaded via front USB port from an USB memory stick or
can imported via the complimentary HMArb software (available
for download at http://www.hameg.com).
The operation modes burst, wobble, gating, internal and external
triggering and the modulation functions AM, FM, PM, PWM and
FSK ( in each case int. and ext.) can be applied on all respective
signal shapes ( e.g. pulse width modulation is only applicable
to pulse signals).
Particular emphasis has also been put on a powerful and
practice oriented pulse generator. Providing pulses with a
S h o r t d e s c r i p t i o n H M F 2 5 2 5 / H M F 2 5 5 0
23 24
Fig. 3.1: Example for an
oscilloscope signal which
can be imported to the
HMF
recurrence rate of up to 25 MHz (12,5 MHz for the HMF2525), a
pulse width can be chosen in the range of 15 ns up to 999 s with
a resolution of 5 ns. Rise/Fall time can be selected in the range
from 8 ns to 500 ns – a very useful feature when characterising
input hysteresis of semiconductor devices.
All parameters, including the current waveform are shown
concurrently on the high-contrast TFT display. Interactive, illu-
minated soft keys and the direct access of all relevant functions
ensure the typical Hameg easy operability. The HMF series is
equipped with an USB/RS-232 dual interface. Optionally, an
Ethernet/USB or GPIB (IEEE-488) interface is available.
25
Fig. 3.2: Display of the
HMF 2550 /2525
Subject to change without notice
31