The Rohde & Schwarz FSEM20 is a high-performance spectrum analyzer from the FSE Series, designed for versatile frequency and amplitude measurements in RF and microwave applications. Covering a frequency range from 9 kHz to 20 GHz, it features advanced sweep rates, a high-contrast 24-cm (9.5") display, standard AM/FM demodulation, and highly flexible resolution bandwidth settings ranging down to 1 Hz.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE 488.2), RS-232-C, Centronics (Parallel), External VGA Monitor Out, Keyboard (PS/2) |
| Display | 24-cm (9.5") Active Matrix Color LCD |
| Warm-up Time | 10 minutes (standard), 20 minutes (with Option FSE-B4) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V to 240 V, 47 Hz to 440 Hz, approx. 180 VA (up to 250 VA with options) |
| Operating Temperature | 0 °C to +50 °C |
| Dimensions (W×H×D) | 435 mm × 236 mm × 570 mm |
| Weight | 28 kg |
Frequency and Amplitude Performance
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 25.8 GHz |
| Maximum Dynamic Range | 150 dB |
Bandwidth and Sweep Characteristics
| Parameter | Value |
|---|---|
| Resolution Bandwidth (RBW) Range | 1 Hz to 10 MHz |
| Resolution Bandwidth Steps | 1/2/3/5 sequence |
| Minimum Video Bandwidth | 1 Hz |
| Maximum Video Bandwidth | 10 MHz |
| Video Bandwidth Steps | 1/2/3/5 sequence |
| Minimum Sweep Time | 1 µs |
| Sweep Rate | > 20 sweeps/s |
Measurement Capabilities and Signal Processing
| Parameter | Value |
|---|---|
| Demodulation Formats | AM, FM |
| Number of Markers | 8 |
| Frequency Counter | With selectable resolution |
| Limit and Display Lines | Numerous level & frequency lines |
System Architecture and Display
| Parameter | Value |
|---|---|
| Display Modes | Split-screen display |
| Display Representation | Quasi-analog display |
Inputs, Outputs and Interfaces
| Parameter | Value |
|---|---|
| RF Input Impedance | 50 Ω |
| RF Input Connector | APC 3.5 mm |
Bandwidths
| Parameter | Value |
|---|---|
| FFT bandwidths | 1 Hz to 1 kHz (in 1, 2, 3, 5 steps) |
Reference Frequency
| Parameter | Value |
|---|---|
| Reference frequency aging (standard) | 1 x 10^-6 per year |
| Reference frequency aging (with Option FSE-B4) | 1 x 10^-9 per day, 1 x 10^-7 per year |
Tracking Generator Option
| Parameter | Value |
|---|---|
| Tracking generator frequency range (Option FSE-B9) | 9 kHz to 3.5 GHz |
| Tracking generator frequency range (Option FSE-B10) | 9 kHz to 7 GHz |
Amplitude Accuracy
| Parameter | Value |
|---|---|
| Total level uncertainty (< 3.5 GHz) | < 1 dB |
Performance
| Parameter | Value |
|---|---|
| Third-order intercept (TOI) | > 15 dBm (typical +20 dBm) |
| 1 dB compression point | +10 dBm (0 dB RF attenuation) |
| Displayed average noise level (DANL) | <-140 dBm (10 Hz RBW, 10 MHz to 3.5 GHz) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Reference Input/Output | BNC, 10 MHz |
| IF Output (21.4 MHz) | BNC |
| External Trigger Input | BNC |
Frequency
| Parameter | Value |
|---|---|
| Frequency Span | 0 Hz, 10 Hz to 25.8 GHz |
| Internal Reference Frequency | 10 MHz |
RF Input
| Parameter | Value |
|---|---|
| RF Attenuation Range | 0 dB to 70 dB in 10 dB steps |
| Maximum Continuous RF Input Power | +30 dBm (1 W) |
Display
| Parameter | Value |
|---|---|
| Display Resolution | 640 × 480 pixels |
Storage
| Parameter | Value |
|---|---|
| Floppy Disk Drive | 3.5 inch, 1.44 MB |
Technology
Superheterodyne Spectrum Analyzer
Applications
RF and Microwave Signal Analysis