RF Generators
Modular Radio Frequency Generator RFG-M
The modular radio frequency generator in an electromagnetically sealed 19" case can be used to supply capacitive loads, most notably ion guides and ion traps as well as quadrupole mass analyzers.
The generator produces two sinusoidal output voltages with a 180° phase shift in the Megahertz range with which the connected load can be supplied exactly symmetrically. The symmetry of the output voltage can be manually set using a rotary variable capacitor.
The frequency of the output voltage is fixed according to the customer's requirements, but can be changed by switching out the exchangeable RF power stage. The amplitude of the output voltages can be manually adjusted or remote-controlled via a 10 V port.
The generator produces two sinusoidal output voltages with a 180° phase shift in the Megahertz range with which the connected load can be supplied exactly symmetrically. The symmetry of the output voltage can be manually set using a rotary variable capacitor.
The frequency of the output voltage is fixed according to the customer's requirements, but can be changed by switching out the exchangeable RF power stage. The amplitude of the output voltages can be manually adjusted or remote-controlled via a 10 V port.
Two BNC inputs are available to control the DC offsets of the output voltages. With the DC offsets being independently adjustable, a connected multipole can be operated as a mass filter and the potential can be varied on its axis.
By default, the device is equipped with a module for precision measurement of the output voltage and its symmetry. It has two analog displays and two analog outputs. Via these 10 V ports the amplitude of the output voltages can be monitored or a computer control loop can be implemented.
By default, the device is equipped with a module for precision measurement of the output voltage and its symmetry. It has two analog displays and two analog outputs. Via these 10 V ports the amplitude of the output voltages can be monitored or a computer control loop can be implemented.
| Frequencies | Exchangeable, 0.1–10 MHz |
| Output power | 50 W |
| Output voltage amplitude | 0–500 V typ. |
#Components (see sidebar menumenu at the top of the page)
Base Unit
RF Power Stages
 |
| RFG-M-0.5MHz |
|
| RFG-M-1.0MHz |
|
| RFG-M-2.0MHz |
RF power stages for other frequencies and amplitudes are available upon request.
Amplitude Control
Amplitude and Symmetry Measurement
Power Supply Units
#Download
User Manual
 | Beschreibung-1.10.pdf, 1671 KB: Download the user manual (currently only available in German) |
Paper
|
Preprint.pdf, 647.7 KB: Preprint of the Rev. Sci. Instrum. paper Compact Radio-Frequency Power Supply for Ion and Particle Guides and Traps |
#Additional Information
Ports and Controls on the Front Panel
Shipment Contents
- Base unit, by default equipped with:
- RF power stage (RF Power Stage) according to customer's requirements
- RF amplitude control (HV Control)
- Module for measuring the RF amplitude and the symmetry (HV Monitor)
- Two power supply units (PSU +2V, +8V and PSU ±5V, ±15V)
- Power cable (cold-device cable, length: 1.8 m, color: black)
- Output cables (2× coaxial cables with low capacitance, 50 Ω MHV plug, length 1.5 m *, capacitance ca. 70 pF)
- Mounting materials for mounting in a 19" rack (2× cover panels to modify the base unit for mounting it in a 19" rack, 4× M6 screws with washers and cage nuts)
- Artificial load for setting up the generator (2×, connector: MHV socket, capacitance: 50 pF *)
- Set of high-voltage capacitors to tune the operating frequency of the RF power stage (capacitances: 10, 15, 22, 33 and 47 pF * — two of each, maximum voltage: 3 kV)
- Replacement fuse 5×20 mm, T 1.25 A or T 2.5 A
- User manual (see above)