Atec Rohde-Schwarz-FSEM20 - Manual (Page 5)

Spectrum and Network Analysis 156
Contents Overview R&S Addresses Type Index Chapter Overview
Contents Overview R&S Addresses Type Index Chapter Overview
Spectrum Analyzers FSEA, FSEB, FSEM, FSEK
Common specifications in brief
Frequency
Frequency display
with marker
Resolution 0.1 Hz to 10 kHz (depending on span)
Frequency counter measures the marker frequency
Resolution 0.1 Hz to 10 kHz (selectable)
Display range of frequency axis 0 Hz, 10 Hz to full span
Sweep time
Display range 0 Hz 1 µ s to 1000 s
Display range ≥ 10 Hz 5 ms to 1000 s
Picture refresh rate > 20 updates/s with 1 trace
> 15 updates/s with 2 traces
Sampling rate 50 ns (20 MHz A/D converter)
Sweep trigger free run, single, line, video, gated,
delayed, external
Zero span additionally pretrigger, posttrigger,
trigger delay
Level
Display range
noise floor displayed to 30 dBm
Max. input level
RF attenuation 0 dB/ ≥ 10 dB
DC voltage 0 V
CW RF power 20 dBm (= 0.1 W)/30 dBm (= 1 W)
Pulse spectral density 97 dB ( µ V/MHz)
Max. pulse energy (10 µ s) 1 mWs/FSEM: 0.5 mWs (RF attenua-
tion
≥ 10 dB)
Max. pulse voltage 150 V (RF attenuation ≥ 10 dB)
1 dB compression of input mixer
(0 dB RF attenuation)
+ 10 dBm
Max. harmonics suppression 90 dB (f >50 MHz)
3rd-order intercept point
IP3, ∆ f > 5 × resolution bandwidth
or > 10 kHz, f > 50MHz > 12 dBm (typ. 15 dBm)
Intercept point k2 30 dBm for f < 50 MHz
> 45 (typ. > 50) dBm for f > 50 MHz
FSEM > 25 dBm for f < 150 MHz
> 40 dBm for f > 150 MHz
Level display
Screen 10 × 10 subdivisions
Trace 500 × 400 pixels (one diagram)
Log level axis 10 to 200 dB in 10 dB steps
FSEM 0 to 200 dB in 10 dB steps
Linear level axis 10% of reference level per level divi-
sion, 10 divisions
Setting range of reference level
Log level display − 130 to + 30 dBm in 0.1 dB steps
FSEM − 120 to + 30 dBm in 0.1 dB steps
Linear level display 7 nV to 7.07 V in 1% steps
FSEM 70 nV to 7.07 V in 1% steps
Units of level axis dBm, dB µ V, dB µ A, dBpW (log level
display); mV, µ V, mA, µ A, pW, nW
(linear level display)
Measurement accuracy (0 to − 50 dB) 1 dB (f < 1 GHz),
1.5 dB (f > 1 GHz)
FSEM 2 dB (f < 18 GHz),
2.5 dB (f > 26.5 GHz)
Pulse amplitude accuracy (single pulses)
Bandwidth < 1 MHz 0.5 dB
Bandwidth > 1 MHz 2 dB
Trigger function
Trigger
free run, line, video, RF, external
Delayed sweep
Trigger source free run, line, external, video
Delay time 100 ns to 10 s, 1 µ s
Delayed sweep time 2 µ s to 1000 s
Gated sweep
Trigger source external
Gate position 1 µ s to 100 s
Gate length 1 µ s to 100 s, resolution 1 µ s
Demodulation
Modulation modes
AM and FM
Audio output loudspeaker and headphones output
Marker stop time 100 ms to 60 s
Squelch adjustable by means of level line
External Mixer FSE-B21
(standard in models 21/31
LO output/IF input
(front panel)
SMA female, 50 Ω
LO signal 7.5 GHz to 15.2 GHz
Amplitude +15.5 dBm ±3 dB
IF signal 741.4 MHz
Max. reference level –20 dBm
IF input (front panel) SMA female, 50 Ω
Frequency 741.4 MHz
Max. reference level –20 dBm
Inputs and outputs (front panel)
RF input
N female, 50 Ω
VSWR (RF attenuation > 0 dB),
f < 3.5 GHz < 1.5
Attenuator 0 to 70 dB, selectable in 10 dB steps
Probe power + 15 V/ − 12.6 V (DC) and ground,
≥ 150 mA
Power supply and coding connector
for antennas etc (antenna code)
12-contact Tuchel connector
Supply voltages ± 10 V, max. 100 mA, ground
AF output jack, adjustable up to 1.5 V
(Z
in
= 10 Ω )
Inputs and outputs (rear panel)
IF 21.4 MHz
BNC female 50 Ω , bandwidth
> 1 kHz or resolution bandwidth
Level 0 dBm at reference level,
mixer level
>− 60 dBm
Video output BNC female 50 Ω , 0 to 1 V
(open-circuit voltage)
Reference frequency
Output, usable as input BNC female 10 MHz, 7 dBm
Input 1/.../16 MHz, > 0 dBm into 50 Ω
Sweep output BNC female, 0 to 10 V, proportional
to displayed frequency
Noise source connector BNC female, 0/28 V, switch-selected
Ext. trigger/gate input BNC, TTL signal − 5/ + 5 V
FSEM BNC, > 10 k Ω , − 5 to + 5 V selectable
IEC/IEEE-bus control interface to IEC625-2 (IEEE488.2),
Command set SCPI 1994.0
Serial interface RS-232 interface (COM1 and
COM2), 9-contact female connectors
Mouse interface PS/2-compatible
Plotter via IEC/IEEE bus or RS-232-C, HP-GL
Printer interface parallel (Centronics) or serial (RS-232-C)
Keyboard connector 5-contact female for MF2 keyboard
User interface 25-contact Cannon female
Connector for external monitor (VGA) 15-contact female
General data
Display (640 × 480)
Models 20 24 cm LCD (9.5")
Models 30 24 cm colour LCD (9.5")
Mass memory 3 1 /
2
", 1.44 MByte; hard disk
Power supply, AC 100/120/230/240 V ± 10%,
47 to 440 Hz (170 to 230 VA)
Power consumption 170 to 230 VA (depending on model)
Dimensions (W × H × D; 5 HU)) 427 mm × 236 mm × 460 mm
FSEM20 435 mm × 236 mm × 460 mm
FSEM30 435 mm × 236 mm × 570 mm
Weight 21.5 to 29 kg (depending on model)