Rohde and Schwarz HMF2550 - Arbitrary Function Generator, 50 MHz

• Arbitrary waveform generator: 250 MSa/s, 14 bit, 256 kSa
• Output voltage: 5 mVPP to 10 VPP (into 50 Ω load)
• Output impedance steplessly adaptable (1 Ω to 10 kΩ)
• DC offset: ± 5 mV to 5 V

The Rohde and Schwarz HMF2550 arbitrary function generator features a 50MHz bandwidth with 14 bit resolution, 250MSample/s sample rate and 8ns rise time.

The HMF2550 offers users a variety of standard waveforms, as well as powerful arbitrary signal functionality. Users can choose from numerous pre-defined shapes including sine, rectangle and triangle, as well as customer specific, arbitrary curve shapes with a signal length up to 256 kPts. Arbitrary waveforms can be developed with the included PC software and transferred to the instrument via the HO720 interface, or in CSV format via the front side USB connector.

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. A pulse width can be chosen in the range of 15ns up to 999s with a resolution of 5ns, and rise/fall time from 8ns to 500ns - a very useful feature when characterizing input hysteresis of semi-conductor devices.

Front Panel

1. POWER (button) - Power switch turns the instrument on/off
2. Display (TFT) - All parameters including the current waveform are shown concurrently
3. Interactive Softkeys - Direct access of all relevant functions
4. Numerical keyboard - Setting of all operating parameters with respective units
5. SWEEP - Selection of the parameters for sweep mode
6. MOD - Modulation modes
7. BURST - Add user defined period to the waveform depending on internal or external trigger signal
8. MENU - Open the menu options
9. Arrow buttons - Cursor keys for shifting the cursor to the position to be changed, increase/decrease value of the selected parameter

10. Rotary knob - Knob to adjust the values / confirm settings by pushing the knob
11. OUTPUT - Turn on/off the output
12. OFFSET - Add a user defined DC voltage to the signal output
13. INVERT - Inverses the pulse signal output
14. REM/TRIG - Toggling between front panel and remote operation or force trigger
15. USB stick port - USB port for storing parameters and load available waveforms
16. Signal functions - Selection of the signal: sine wave, square wave, triangle, pulse, arbitrary
17. TRIG INPUT (BNC socket) - Input for trigger signals
18. TRIG OUTPUT (BNC socket) - Output for trigger signals (TTL)
19. SIGNAL OUTPUT (BNC socket) - Signal output (50 Ω)

Rear Panel

20. Interface - HO720 Dual Interface USB/RS-232 is provided as standard
21. MODULATION INPUT (BNC socket) - Input for external modulation source, max. ±5 V, 50 kHz
22. SWEEP OUT (BNC socket) - Sawtooth output (sweep mode)

23. 10 MHz REF OUT (BNC socket) - Reference output
24. 10 MHz REF IN (BNC socket) - Reference input
25. POWER INPUT (Power Cord Receptacle)