Operation Of The Hmf2525 / Hmf2550; First Time Operation; Switching On; Supported Signal Waveforms With Parameter Inputs - Hameg HMF2525 Handbuch

O p e r a t i o n o f t h e H M F 2 5 2 5 / H M F 2 5 5 0

4 Operation of the HMF2525 / HMF2550

4.1 First time operation

Prior to the fi rst time operation please note and observe the
safety instructions given before!

4.2 Switching on

Turn the instrument on by pushing the POWER button
turn-on of the HMF2550 / HMF2525 the display will fi rst show
the type of instrument and the versions of the hardware and
software. The instrument will resume the operational settings
which were active before turn-off. All settings are stored in a
nonvolatile memory and are recalled when the instrument is
switched on. However, the output signals (OUTPUT), the BURST
mode, the SWEEP function, the OFFSET and INVERT functions
will always be deactivated upon turn-on.
Factory settings
Wave form: Sinus
Frequency: 50 kHz
Amplitude: 5.000 V
Pulse width: 20 μs
Offset: 0 mV
Sweep time: 1 s
Sweep start frequency: 1 Hz
Sweep stop frequency: 10 Hz
4.3 Supported signal waveforms with parameter
inputs
The HMF2550 / HMF2525 offers fi ve different waveforms with
a wide selection of parameters:
(all values in parenthesis are valid for the HMF2525)
1. Sine
Frequency 0.01 mHz ... 50 MHz (25 MHz)
Period 20 ns (40ns)...100000 s
Amplitude 0 ... 20V (high impedance)
High Level -10 V ... +10 V
Offset -10V ... +10 V
Low Level -10 V ... +10 V
2. Square
Frequency 0.01 mHz ... 50 MHz (25 MHz)
Period 20 ns (40ns) ... 100000 s
Amplitude 0 ... 20V (high impedance)
High Level -10 V ... +10 V
Offset -10V ... +10 V
Low Level -10 V ... +10 V
Duty Cycle 20% ... 80%
High Width (dependant on adjusted periodic time) 4ns
(8ns) ... 80000 s
Low Width (dependant on adjusted periodic time) 4ns
(8ns) ... 80000 s
3. Triangle
Frequency 0.01 mHz ... 10 MHz (5MHz)
Period 100 ns ... 100000 s
Amplitude 0 ... 20V (high impedance)
High Level -10V ... +10 V
Offset -10V ... +10 V
Low Level -10 V ... +10 V
26
Subject to change without notice
1
. Upon
at a load of 50 Ω
ss
Symmetry 0% ... 100%
Rising Time 4ns (8ns) ... 100000 s (dependant on adjusted
the frequency)
Falling Time 4ns (8ns) ... 100000s (dependant on adjusted
the frequency)
4. Pulse
Frequency 0.10 mHz ... 25 MHz (12,5 MHz)
Period 40 ns (80ns) ... 10000 s
Amplitude 0 ... 20 V (high impedance)
High Level -10V ... +10 V
Offset -10 V ... +10V
Low Level -10 V ... +10V
Duty Cycle 0.1% ... 99.9%
High Width (dependant on adjusted periodic time)
0 ... 10000 s
Low Width (dependant on adjusted periodic time)
0...10000 s
Edging Time 5 ns ... 500 ns
5. Arbitrary
Frequency 0.01 mHz ... 25 MHz (12,5 MHz)
Period 40 ns (80ns) ... 100000 s
Amplitude 0 ... 20V (high impedance)
High Level -10V ... +10 V
Offset -10 V ... +10 V
Low Level -10 V ... +10 V

4.4 Quick introduction

First select the desired basic waveform (sine, square etc.) by
pushing the respective key. In order to edit the parameters of
the waveform selected choose from the soft keys
of the function generator display.
Fig. 4.1: Panel key's for chosing basic waveforms
The signal parameters can be set either directly via the nume-
rical keyboard 4 , with the knob
latter are also used to select the decimal position which is to be
changed. Turning the knob CW will increase the value, turning
it CCW will decrease it. The unit is selected with the unit keys
of the keyboard. Wrong inputs (e.g. illegal frequency range) will
be indicated by an acoustical warning signal and will not be
accepted. The display will show a red error fi eld.
The ESC key is used to correct an input via the
numerical keyboard.
STOP
Fig. 4.2: numeric keypad and key's for unit's and escape
It is possible to only use the knob
the knob will activate the cursor in the display, the soft keys
3 are thus deactivated. The desired position is selected by
3 to the right
or the arrow keys 9 . The
10
for all settings. Pushing
10