R&S FSH3 User manual

Third Edition June 2006
Handheld
Spectrum Analyzer ¸FSH
¸FSH3 100 kHz to 3 GHz
¸FSH6 100 kHz to 6 GHz

2Handheld Spectrum Analyzer ¸FSHHandheld Spectrum Analyzer ¸FSH2
The ¸FSH is the ideal spectrum analyzer for
rapid, high-precision, cost-effective signal investi-
gations. It provides a large number of measure-
ment functions and so can handle anything from
the installation or maintenance of a mobile
radio base station up to on-site fault location in
RF cables as well as development and service
– an extensive range of applications.
Spectrum analysis
anywhere, anytime
– on earth and in space
Due to its excellent characteristics,
the ¸FSH 3 is used on board the
International Space Station (ISS) for
distance-to-fault measurements on
RF antenna cables.

12Handheld Spectrum Analyzer ¸FSH
Robust edge protection,
stable carrying handle
Easy operation
Four hours operating time on battery power
Storage of up to 256 traces and setups
Easy data transfer to PC
High measurement accuracy
Best RF characteristics in its class
Handy, robust and
portable
The ¸FSH has been designed as a robust,
portable spectrum analyzer that can be used in
the field.
The ¸FSH can, of course, also be used on
the lab bench. The ¸FSH has an adjust-
able, fold-out stand to position the instrument
to an optimal display viewing angle.
Softkey functionFunction keys
Trace
Memory Trace
Clear/Write
Max/Min Hold
Average
View
Detectors
– Auto Peak
– Sample
– Max/Min Peak
– RMS







The ¸FSH and its accessories can be stored and
transported in the compact and sturdy aluminum transit
case.

3Handheld Spectrum Analyzer ¸FSH
General instrument setups
Default setting
Current instrument setting
Rotary knob
Cursor keys
Color display with 320×240
pixel, switchable to mono-
chrome display for high-contrast
display when used in direct
sunlight in the field
RS-232-C optical interface
Simple menu-based operation
via softkeys
Memory for up to 256 traces
and setups
Direct printout of measure-
ment results


Selection of following functions:
Marker
Delta marker
Noise marker
Frequency counter
Multimarker





Selection of measurement
functions:
Spectrum analysis
Scalar network analysis
Vector network analysis
Receiver mode
Channel power
TDMA power
Occupied bandwidth
DTF
3GPP code domain power
Isotropic antenna
C/N measurement
Power
Transducer factors
Limit lines
Display line















AC power supply connector
Trigger input/
external reference input
Generator output, N connector
Power sensor connector
RF input, N connector
Headphones connector ¸FSH 3 ¸FSH 6
Frequency range 100 kHz to 3 GHz 100 kHz to 6 GHz
Resolution bandwidths 1 kHz to 1 MHz (model .13)
100 Hz to 1 MHz (models .03 and .23)
100 Hz to 1 MHz
Video bandwidths 10 Hz to 1 MHz
Displayed average noise level typ. –114 dBm (1 kHz) (model .13)
typ. –135 dBm (100 Hz) (models .03 and .23)
typ. –135 dBm (100 Hz)
TOI typ. 13 dBm
SSB phase noise <–100 dBc (1 Hz) at 100 kHz from carrier
Detectors sample, max/min peak, auto peak, RMS
Level measurement uncertainty <1.5 dB, typ. 0.5 dB
Reference level –80 dBm to +20 dBm
Dimensions 170 mm × 120 mm × 270 mm
Weight 2.5 kg
Data in brief

Handheld Spectrum Analyzer ¸FSH4
Application
TDMA power measurements
Channel-power measurements
Field-strength measurements/
measurements with isotropic antenna
Power measurements up to 8 GHz/18 GHz
Directional power measurements up to 1 GHz/4 GHz
Measurements on cables (distance-to-fault)
Scalar transmission measurements
Vector transmission measurements
2)
Scalar reflection measurements
Vector reflection measurements
2)
Remote control via RS-232-C
interface
Product
1) For ¸FSH 3 model .23 with serial number 103500 or later.
2) ¸FSH-K2 required.
¸FSH standard function
Not available
The ¸FSH is available as a 3 GHz or 6 GHz model either with or without an internal tracking
generator. When the tracking generator is included, the ¸FSH can be used for distance-to-fault
(DTF) measurements, scalar and vector network analysis, and one-port cable loss measurement.
Almost all models come standard with an adjustable preamplifier, making them suitable for measur-
ing very small signals. Power sensors are available as accessories for high-precision terminating
power measurements up to 8 GHz or 18 GHz as well as for directional power measurements up to
4 GHz. The following tables show possible configurations for various applications and an overview
of available models.
¸FSH – options and applications
Receiver mode
One-port cable loss
measurements
¸FSH (models .03/.06)
with preamplifier
¸FSH (model .13)
with tracking generator
¸FSH (models .23/.26)
with tracking generator and
preamplifier
¸FSH – models
Frequency range Tracking generator Output power of
tracking generator
Preamplifier Resolution bandwidth
¸FSH3 model .03 100 kHz to 3 GHz – – 100 Hz to 1 MHz
¸FSH3 model .13 100 kHz to 3 GHz –20 dBm – 1 kHz to 1 MHz
¸FSH3 model .23 100 kHz to 3 GHz –20 dBm/0 dBm selectable 100 Hz to 1 MHz
¸FSH6 model .06 100 kHz to 6 GHz – – 100 Hz to 1 MHz
¸FSH6 model .26 100 kHz to 6 GHz –10 dBm (f < 3 GHz)
–20 dBm (f > 3 GHz)
100 Hz to 1 MHz
C/N measurements
Channel tables
Code domain power measurements
on 3GPP base stations
1)
+¸
FSH-Z1/
-Z18
+¸
FSH-Z14/-
Z44
+¸
FSH-Z1/
-Z18
+¸
FSH-Z2/Z3
+¸
FSH-B1
+¸
FSH-Z2/Z3
+¸
FSH-B1
+¸
FSH-Z14/-
Z44
+¸
FSH-Z1/
-Z18
+¸
FSH-Z14/-
Z44
+¸
FSH-Z2
+¸
FSH-Z2/Z3


  
 
 


+¸
FSH-K3
+¸
FSH-K3
+¸
FSH-K3
+¸
FSH-K1
+¸
FSH-K1
+¸
FSH-K1
+¸
FSH-Z2/Z3
+¸
FSH-K2
+¸
FSH-Z2/Z3
+¸
FSH-K2
– – – –





–
–
+¸
FSH-K4

5Handheld Spectrum Analyzer ¸FSH
Field-strength measurements with isotropic
antenna
When used with the ¸TS-EMF isotropic antenna, the ¸FSH can
determine the direction-independent resultant field strength in the frequency
range from 30 MHz to 3 GHz. For measuring the resultant field strength, the
antenna has three orthogonal antenna elements. The ¸FSH successively
triggers the three antenna elements and calculates the resultant field strength.
The calculation takes into account the antenna factors for each individual
antenna element as well as the cable loss of the connecting cable.
TDMA power measurements
By means of the TDMA POWER function, the ¸FSH performs time-domain
power measurements within a timeslot of TDMA (time division multiple access)
methods. All the settings required for the GSM and EDGE standards are
predefined on the ¸FSH to make these measurements easier for the user.
In addition, up to five user-definable instrument setups can be loaded into the
¸FSH using the ¸FSH View software.
Channel-power measurements
The ¸FSH determines the power of a definable transmission channel
by means of the channel-power measurement function. A channel-power
measurement for the digital mobile radio standards 3GPP WCDMA, cdmaOne
and CDMA2000® 1x is performed at a keystroke with all the correct instrument
settings. With the ¸FSH View software, the user can quickly and easily
define further standards and load them into the ¸FSH.
Field-strength measurements
When measuring electric field strength, the ¸FSH takes into account
the specific antenna factors of the connected antenna. Field strength is
displayed directly in dBµV/m. If W/m2is selected, the power flux density is
calculated and displayed. In addition, frequency-dependent loss or gain of, for
example, a cable or an amplifier can be corrected. For quick and easy result
analysis, the ¸FSH provides two user-definable limit lines with automatic
limit monitoring.
¸FSH with Active Directional Antenna ¸HE 200 (optional accessory)
CDMA2000® is a registered trademark of the Telecommunications Industry Association (TIA USA)
¸FSH with Isotropic Antenna ¸TS-EMF (optional accessory)

Handheld Spectrum Analyzer ¸FSH6
Channel tables
If preferred, the ¸FSH can be tuned by channel numbers rather than by
entering the frequency. The channel number is displayed instead of the center
frequency. Users who are accustomed to channel assignments, which are
common in TV and mobile radio applications, can operate the ¸FSH more
easily. The channel tables are generated with the ¸FSH View software
and loaded into the ¸FSH. The ¸FSH includes TV channel tables for a
number of countries
Receiver mode
When equipped with the option ¸FSH-K3, the ¸FSH can be operated
as a receiver for monitoring and precompliance EMC applications. Measure-
ments are performed at a predefined frequency with a user-selectable measure-
ment time. In the scan mode, the ¸FSH sequentially measures each level
at various frequencies defined in a channel table. The channel tables are
generated with the ¸FSH View software and loaded into the ¸FSH. For
a few TV transmitter and mobile radio standards, the tables are predefined. In
addition, the CISPR bandwidths 200 Hz, 9 kHz, 120 kHz and 1 MHz are available
for EMI emission measurements. The ¸FSH offers peak, average, RMS and
quasi-peak detectors.
C/N measurements
The ¸FSH offers a carrier/noise (C/N) measurement for determining the
ratio of carrier power to noise power or carrier power to noise power density.
The ¸FSH supports three different modes for carrier power measurement.
In the CW TX mode, the ¸FSH determines the power of an unmodulated
carrier. In the digital TX mode, it determines the channel power of a reference
channel, as is common with digitally modulated carriers (e.g. the DAB, DVB,
DVB-T, DVB-H and J.83/A/B/C standards). Furthermore, the ATSC standard for
digital terrestrial television with 8VSB modulation is supported. In the analog
TV mode, the ¸FSH measures the peak power of the vision carrier with
amplitude-modulated TV signals.

7Handheld Spectrum Analyzer ¸FSH
Power measurements
The Power Sensors ¸FSH-Z1 and ¸FSH-Z18 expand the ¸FSH to a
high-precision RF power meter up to 8 GHz and 18 GHz respectively. As with
thermal sensors, the true RMS value of the measured signal is obtained over
the entire measurement range of –67 dBm to +23 dBm irrespective of the
signal waveform. In particular with modulated signals, additional measurement
errors can thus be prevented, and handling becomes easy.
Directional power measurements
The Directional Power Sensors ¸FSH-Z14 and ¸FSH-Z44 turn the
¸FSH into a full-fledged directional power meter with a frequency range of
25 MHz to 1 GHz and 200 MHz to 4 GHz. The ¸FSH can then simultaneously
measure the output power and the matching of transmitter system antennas
under operating conditions. The power sensors measure average power up
to 120 W and normally eliminate the need for any extra attenuators. They are
compatible with the common standards GSM/EDGE, 3GPP WCDMA, cdmaOne,
CDMA2000® 1x, DVB-T and DAB. Additionally, the peak envelope power (PEP)
can be determined up to a maximum of 300 W.
Measurements on cables (distance to fault)
The option ¸FSH-B1 allows the distance to any faults in an RF cable to
be determined rapidly and accurately. Distance-to-fault measurements using
the ¸FSH-Z2/-Z3 VSWR bridge give an immediate overview of the state of
the device under test (return loss and distance, see figure). The marker-zoom
function allows detailed analysis of faults with a resolution of up to 1024 pixel.
Only applies to the ¸FSH with tracking generator and options ¸FSH-B1
(distance-to-fault measurement) and ¸FSH-Z2/-Z3 (VSWR bridge) installed

Handheld Spectrum Analyzer ¸FSH8
Scalar transmission and reflection measure-
ments with VSWR bridge (¸FSH-Z2/-Z3 as
accessory)
The ¸FSH with built-in tracking generator rapidly determines the
transmission characteristics of cables, filters, amplifiers, etc, with a
minimum of effort. When equipped with the ¸FSH-Z2/-Z3 VSWR bridge
(10 MHz to 3 GHz/6 GHz), the ¸FSH can also measure the matching (return
loss, reflection coefficient or VSWR) of an antenna, for example. The bridge is
screwed directly onto the ¸FSH’s RF input and tracking generator output
without involving cumbersome, extra cabling. The innovative design of the
¸FSH-Z3 VSWR Bridge with integrated RF bypass switch allows the
user to make spectrum and transmission measurements also with the bridge
connected. Active components such as amplifiers can be supplied directly via
the RF cable by means of the two integrated bias tees.
Vector transmission and reflection measurements
Compared to scalar measurements, the optional ¸FSH-K2 vector measure-
ment significantly increases measurement accuracy and dynamic range for
transmission and reflection measurements. This is possible because the receive
signal is analyzed with respect to magnitude and phase. After calibration,
complex correction of the system errors can be effected by the ¸FSH.
To allow detailed analysis of the matching of, for example, an antenna, the
magnitude and phase are displayed in a Smith chart. A user-definable limit line
comes in handy when evaluating the measurement results.
One-port cable loss measurements
The ¸FSH with tracking generator and VSWR bridge can determine the
cable loss of previously installed long cables without much effort. One end of
the cable is connected to the VSWR bridge, and the other end is terminated
with a short circuit or simply left open. The calculated cable loss represents
the average value within the displayed frequency range. The loss at specific
frequencies is determined via markers. The one-port cable loss measurement is
only available with the option ¸FSH-K2.
¸FSH-Z3 VSWR bridge

9Handheld Spectrum Analyzer ¸FSH
¸FSH with near-field probe set and DUT
3GPP FDD code domain power measurements
on base stations
The ¸FSH-K4 option allows the code domain power measurements on a
3GPP base station. It measures the total power and the power of the most
important code channels, such as the common pilot channel (CPICH), primary
common control physical channel (P-CCPCH), primary synchronization channel
(P-SCH) and secondary synchronization channel (S-SCH). In addition, the
frequency offset of the carrier frequency and the error vector magnitude (EVM)
are measured and displayed. ¸FSH-K4 provides an automatic function for
fast and optimal setting of the reference level. In the case of base stations with
two antennas, the user can select which antenna the spectrum analyzer should
synchronize to (antenna diversity).
Data transfer
between ¸FSH
and PC
(interface cables and
software are supplied
with the instrument)
¸FSH with
¸FSH-Z2
VSWR bridge
¸FSH with
Directional
Power Sensor
¸FSH-Z44
The ¸FSH-Z29
calibration standard
is designed for field
use;. it is a combina-
tion of a 50 Wload,
open and short
Locating EMC weak spots
The Near-Field Probe Set ¸HZ-15 is a diagnostic tool for locating EMC
weak spots on printed boards, integrated circuits, cables, shieldings and other
trouble spots. The Near-Field Probe Set ¸HZ-15 can handle emission
measurements from 30 MHz to 3 GHz. Its sensitivity can be enhanced by
adding the Preamplifier ¸HZ-16, which has a frequency range of up to
3 GHz, a gain of approx. 20 dB and a noise figure of 4.5 dB. In combination with
the ¸FSH, the preamplifier and near-field probe set are a cost-effective
means of analyzing and locating sources of interference during development.
Available for the ¸FSH3 (11145.5850.23) with serial number
103500 or later

Handheld Spectrum Analyzer ¸FSH10
Runs under Windows 98/ME/NT/2000/XP
Rapid and simple transfer of measurement data from the
¸FSH to a PC and vice versa
Data export in ASCII or MS Excel format
Printout of all relevant data via Windows
(screenshot of the ¸FSH display for documentation)
Graphics data stored in standard formats
(.bmp, .pcx, .png, .wmf)
Permanent and continuous transfer of sweeps to the PC;
facilities for subsequent analysis (markers, zoom, etc)
Storage space for traces and measurement data as well as for
comparisons of current and previous measurements (available
space is limited only by the size of the hard disk
of the controlling PC)







Automatic storage of measurement results at selectable
intervals
Generation of cable data with a built-in cable editor;
downloading to the ¸FSH for distance-to-fault mea-
surements (¸FSH-B1)
Editor for generating limit lines, user-definable standards
(measurement of occupied bandwidth, channel power
and TDMA power), transducer factors and correction fac-
tors for taking into account external attenuators or ampli-
fiers, as well as channel lists
Macro function for Word for fast and easy documentation
of measurement results
Connection between PC and ¸FSH via interference-
free, RS-232-C optical interface





Features
The powerful software package for documenting your measurements is
supplied with every ¸FSH.
Control Software ¸FSH View

Specifications
¸FSH3 ¸FSH6
Frequency
Frequency range 100 kHz to 3 GHz 100 kHz to 6 GHz
Reference frequency
Aging 1 ppm/year
Temperature drift 0 °C to +30 °C
+30 °C to +50 °C
2 ppm
in addition 2 ppm/10 °C
Frequency counter
Resolution 1 Hz
Counter accuracy S/N > 25 dB ± (frequency × reference frequency error)
Frequency span model .03/.23,
model .06/.26
model .13
0 Hz, 100 Hz to 3 GHz
0 Hz, 10 kHz to 3 GHz
0 Hz, 100 Hz to 6 GHz
–
Spectral purity
SSB phase noise f = 500 MHz,
+20 °C to +30 °C
30 kHz from carrier <85 dBc (1 Hz)
100 kHz from carrier <100 dBc (1 Hz)
1 MHz from carrier <120 dBc (1 Hz)
Sweep time span = 0 Hz 1 ms to 100 s
span > 0 Hz 20 ms to 1000 s, min. 20 ms/600 MHz
Bandwidths
Resolution bandwidths (–3 dB) model .13 1, 3, 10, 30, 100, 200, 300 kHz, 1 MHz
model .03/.23,
model .06/.26
in addition 100 Hz, 300 Hz
Tolerance ≤300 kHz ±5 %, nominal
1 MHz ±10 %, nominal
Resolution bandwidths (–6 dB) with option ¸FSH-K3
installed
in addition 200 Hz, 9 kHz, 120 kHz, 1 MHz
Video bandwidths 10 Hz to 1 MHz in 1, 3 steps
11Handheld Spectrum Analyzer ¸FSH
Specifications apply under the following conditions: 15 minutes warm-up time at ambient temperature, speci-
fied environmental conditions met and calibration cycle adhered to. Data without tolerances: typical values.
Data designated as “nominal”: design parameters, i. e. not tested.

1) 80 V valid as of serial number 100900 (model 1145.5850.03) or 101600 (model 1145.5850.13); models 1145.5850.23, 1145.5850.06 and 1145.5850.26 all serial numbers.
2) As of serial number 101362.
¸FSH3 ¸FSH6
Amplitude
Display range average noise level displayed to +20 dBm
Maximum permissible DC voltage at RF
input
50 V/80 V1)
Maximum power 20 dBm, 30 dBm (1 W) for max. 3 minutes
Intermodulation-free dynamic range third-order IM products,
2 × –20 dBm, reference
level = –10 dBm
at signal offset ≤2 MHz
at signal offset >2 MHz
typ. 66 dB (typ. +13 dBm third-order intercept, TOI)
60 dB (+10 dBm TOI)
66 dB (typ. +13 dBm TOI)
Displayed average noise level
10 MHz to 3 GHz
3 GHz to 5 GHz
5 GHz to 6 GHz
resolution bandwidth 1 kHz,
video bandwidth 10 Hz,
reference level ≤–30 dBm
<–105 dBm, typ. –114 dBm
–
–
<–105 dBm, typ. –112 dBm
<–103 dBm, typ. –108 dBm
<–96 dBm, typ. –102 dBm
With preamplifier
10 MHz to 2.5 GHz
2.5 GHz to 3 GHz
3 GHz to 5 GHz
5 GHz to 6 GHz
only models .032), .23, .06
and .26
<–120 dBm, typ. –125 dBm
<–115 dBm, typ. –120 dBm
–
–
<–120 dBm, typ. –125 dBm
<–115 dBm, typ. –120 dBm
<–115 dBm, typ. –120 dBm
<–105 dBm, typ. –110 dBm
Inherent spurious reference level
≤–20 dBm, f > 30 MHz,
RBW ≤ 100 kHz <–80 dBm <–80 dBm
Input related spurious
Up to 3 GHz
3 GHz to 6 GHz
Signal frequency minus –2.0156 GHz for
signal frequencies 2 GHz to 3.2 GHz
mixer level –40 dBm,
carrier offset >1 MHz
<–70 dBc (nominal)
–
typ. <–55 dBc
<–70 dBc (nominal)
<–64 dBc (nominal)
typ. <–55 dBc
2nd harmonic mixer level –40 dBm typ. <–60 dBc typ. <–60 dBc
Level display
Reference level –80 dBm to +20 dBm in steps of 1 dB
Display range 100 dB, 50 dB, 20 dB, 10 dB, linear
Display units
Logarithmic
Linear
dBm, dBµV, dBmV
with transducer also dBµV/m and dBµA/m
µV, mV, V, nW, µW, mW, W
with transducer also V/m, mV/m, µV/m and W/m2
Traces 1 trace and 1 memory trace
Trace mathematics A-B and B-A (trace – memory trace and memory trace – trace)
Detectors auto peak, maximum peak, minimum peak, sample, RMS
with option ¸FSH-K3
installed
in addition average and quasi-peak
Level measurement error frequency >1 MHz,
at reference level down to
–50 dB, +20 °C to +30 °C
<1.5 dB, typ. 0.5 dB
Handheld Spectrum Analyzer ¸FSH12

¸FSH3 ¸FSH6
Markers
Number of markers or delta markers max. 6
Marker functions peak, next peak, minimum,
center = marker frequency,
reference level = marker level, all markers to peak
Marker displays normal (level), noise marker, frequency counter (count)
Trigger free-running, video, external
Audio demodulation AM (video voltage without AGC) and FM
Inputs
RF input N female
Input impedance 50 W
VSWR 10 MHz to 3 GHz
10 MHz to 6 GHz
typ. 1.5
–
–
typ. 1.5
Trigger/external reference input BNC female, selectable
Trigger voltage TTL
Reference frequency 10 MHz
Required level from 50 W 10 dBm
Outputs
AF output 3.5 mm mini jack
Output impedance
Open-circuit voltage
100 W
adjustable up to 1.5 V
Tracking generator only models .13, .23, .26
Frequency range 5 MHz to 3 GHz 5 MHz to 6 GHz
Output level model .13
model .23
model .26
f < 3 GHz
f > 3 GHz
–20 dBm (nominal)
0 dBm/–20 dBm, selectable
–10 dBm (nominal)
–20 dBm (nominal)
Step attenuator model .263)
model .234)
20 dB step attenuator is adjustable in 1 dB steps
Output impedance 50 W, nominal
Interfaces
RS-232-C optical interface5)
Baud rate 1200, 2400, 9600, 19200, 38400, 57600, 115200 baud
Power sensor 7-contact female connector (type Binder 712)
13Handheld Spectrum Analyzer ¸FSH
3) As of serial no. 100500.
4) As of serial no. 102314.
5) Standard accessory: optical USB cable.

Accessories
¸FSH3 ¸FSH6
Accessories
Power Sensors ¸FSH-Z1 and ¸FSH-Z18
Frequency range
¸FSH-Z1 10 MHz to 8 GHz
¸FSH-Z18 10 MHz to 18 GHz
VSWR
10 MHz to 30 MHz
30 MHz to 2.4 GHz
2.4 GHz to 8 GHz
8 GHz to 18 GHz
<1.15
<1.13
<1.20
<1.25
Maximum input power average power
peak power
(<10 µs, 1 % duty cycle)
400 mW (+26 dBm)
1 W (+30 dBm)
Measurement range 200 pW to 200 mW (–67 dBm to +23 dBm)
Signal weighting average power
Effect of harmonics
Effect of modulation
<0.5 % (0.02 dB) at harmonic ratio of 20 dBc
<1.5 % (0.07 dB) for continuous digital modulation
Absolute measurement uncertainty sine signals, no zero offset
10 MHz to 8 GHz
8 GHz to 18 GHz
+15 °C to +35 °C
0 °C to +50 °C
+15 °C to +35 °C
0 °C to +50 °C
<2.5 % (0.11 dB)
<4.5 % (0.19 dB)
<3.5 % (0.15 dB)
<5.2 % (0.22 dB)
Zero offset after zeroing <150 pW
Dimensions (W × H × D) 48 mm × 31 mm × 170 mm, connecting cable 1.5 m
Weight <0.3 kg
Directional Power Sensor ¸FSH-Z14
Frequency range 25 MHz to 1 GHz
Power measurement range 30 mW to 300 W
VSWR referenced to 50 W<1.06
Power-handling capacity depending on temperature
and matching
(see diagram on page 15)
100 W to 1000 W
Insertion loss <0.06 dB
Directivity >30 dB
Average power
Power measurement range
CW, FM, PM, FSK, GMSK
Modulated signals CF: ratio of peak envelope
power to average power
30 mW to 300 W
30 mW to 300 W/CF
Measurement uncertainty
25 MHz to 40 MHz
40 MHz to 1 GHz
sine signal,
+18 °C to +28 °C, no zero
offset
4.0 % (0.17 dB) of measured value
3.2 % (0.14 dB) of measured value
Zero offset after zeroing ±4 mW
Range of typical measurement error with
modulation
FM, PM, FSK, GMSK
AM (80 %)
2 equal-power CW carriers
EDGE, TETRA
if standard is selected on
the ¸FSH
0 % of measured value (0 dB)
±3 % of measured value (±0.13 dB)
±2 % of measured value (±0.09 dB)
±0.5 % of measured value (±0.02 dB)
Handheld Spectrum Analyzer ¸FSH14

¸FSH3 ¸FSH6
Temperature coefficient
25 MHz to 40 MHz
40 MHz to 1 GHz
0.40 %/K (0.017 dB/K)
0.25 %/K (0.011 dB/K)
Peak envelope power
Power measurement range for video
bandwidth
4 kHz
200 kHz
600 kHz
0.4 W to 300 W
1 W to 300 W
2 W to 300 W
Measurement uncertainty +18 °C to +28 °C same as for average power plus effect of peak hold circuit
Accuracy of peak hold circuit for burst
signals
Duty cycle ≤ 0.1 and
repetition rate ≤ 100/s
20/s ≤ repetition rate < 100/s
0.001 ≤duty cycle < 0.1
video bandwidth
4 kHz
200 kHz
600 kHz
±(3 % of measured value + 0.05 W) at burst width > 200 µs
±(3 % of measured value + 0.20 W) at burst width > 4 µs
±(7 % of measured value + 0.40 W) at burst width > 2 µs
±(1.6 % of measured value + 0.15 W)
±0.10 W
Temperature coefficient
25 MHz to 40 MHz
40 MHz to 1 GHz
0.50 %/K (0.022 dB/K)
0.35 %/K (0.015 dB/K)
Load matching
Matching measurement range
Return loss
VSWR
0 dB to 23 dB
>1.15
Minimum forward power specs met at ≥ 0.4 W 0.06 W
Power-handling capacity Limits of measurement uncertainty for matching measurements
Dimensions (W × H × D) 120 mm × 95 mm × 39 mm, connecting cable 1.5 m
Weight 0.65 kg
15Handheld Spectrum Analyzer ¸FSH

¸FSH3 ¸FSH6
Directional Power Sensor ¸FSH-Z44
Frequency range 200 MHz to 4 GHz
Power measurement range 30 mW to 120 W (300 W with unmodulated envelope)
VSWR referenced to 50 W
200 MHz to 3 GHz
3 GHz to 4 GHz
<1.07
<1.12
Power-handling capacity depending on temperature
and matching
(see diagram below)
120 W to 1000 W
Insertion loss
200 MHz to 1.5 GHz
1.5 GHz to 4 GHz
<0.06 dB
<0.09 dB
Directivity
200 MHz to 3 GHz
3 GHz to 4 GHz
>30 dB
>26 dB
Signal weighting average power
Measurement uncertainty
200 MHz to 300 MHz
300 MHz to 4 GHz
sine signals,
+18 °C to +28 °C,
no zero offset
4 % of measured value (0.17 dB)
3.2 % of measured value (0.14 dB)
Zero offset after zeroing ±4 mW
Range of typical measurement error with
modulation
FM, PM, FSK, GMSK
AM (80 %)
cdmaOne, DAB
3GPP WCDMA, CDMA2000®
DVB-T
π/4-DQPSK
if standard is selected
on ¸FSH
0 % of measured value (0 dB)
±3 % of measured value (±0.13 dB)
±1 % of measured value (±0.04 dB)
±2 % of measured value (±0.09 dB)
±2 % of measured value (±0.09 dB)
±2 % of measured value (±0.09 dB
Temperature coefficient
200 MHz to 300 MHz
300 MHz to 4 GHz
0.40 %/K (0.017 dB/K)
0.25 %/K (0.011 dB/K)
Peak envelope power
Power measurement range
DAB, DVB-T, cdmaOne,
CDMA2000®, 3GPP WCDMA
Video bandwidth
4 kHz
200 kHz
4 MHz
4 W to 300 W
0.4 W to 300 W
1 W to 300 W
2 W to 300 W
Measurement uncertainty +18 °C to +28 °C same as for average power plus effect of peak hold circuit
Accuracy of peak hold circuit for burst
signals
Duty cycle ≥ 0.1 and
repetition rate ≥ 100/s
20/s ≤repetition rate < 100/s
0.001 ≤duty cycle < 0.1
Burst width ≥ 0.5 µs
Burst width ≥ 0.2 µs
video bandwidth
4 kHz
200 kHz
4 MHz
±(3 % of measured value + 0.05 W) at burst width ≥100 µs
±(3 % of measured value + 0.20 W) at burst width ≥4 µs
±(7 % of measured value + 0.40 W) at burst width ≥1 µs
±(1.6 % of measured value + 0.15 W)
±0.10 W
±5 % of measured value
±10 % of measured value
Range of typical measurement error of peak
hold circuit for cdmaOne, DAB
DVB-T, CDMA2000®, 3GPP WCDMA
video bandwidth 4 MHz
and standard selected on
the ¸FSH
±(5 % of measured value + 0.4 W)
±(15 % of measured value + 0.4 W)
Temperature coefficient
200 MHz to 300 MHz
300 MHz to 4 GHz
0.50 %/K (0.022 dB/K)
0.35 %/K (0.015 dB/K)
Handheld Spectrum Analyzer ¸FSH16

Dimensions (W × H × D) 120 mm × 95 mm × 39 mm, connecting cable 1.5 m
Weight 0.65 kg
Load matching
Return loss
200 MHz to 3 GHz
3 GHz to 4 GHz
VSWR
200 MHz to 3 GHz
3 GHz to 4 GHz
0 dB to 23 dB
0 dB to 20 dB
>1.15
>1.22
Forward power
Frequency
0.2 0.4 0.7 1 23 4 GHz
100
200
400
600
800
1000
AVG +35°C to +50°C 
VSWR ≤3
PEAK (max. 10 ms), VSWR ≤3
AVG –10°C to +35°C
VSWR ≤1.5
AVG –10°C to +35°C
VSWR ≤3
dB0 5 10 15 20 25
Return loss
0.2 GHz to 3 GHz
3 GHz to 4 GHz
–4
–2
0
2
4
6
Measurement error
dB
17Handheld Spectrum Analyzer ¸FSH
Power-handling capacity Limits of measurement uncertainty for matching measurements

¸FSH-Z2 ¸FSH-Z3
¸FSH-Z2/¸FSH-Z3 VSWR bridge
Frequency range 10 MHz to 3 GHz 10 MHz to 6 GHz
Impedance 50 W
VSWR bridge
Directivity
10 MHz to 30 MHz
30 MHz to 1 GHz
1 GHz to 3 GHz
3 GHz to 6 GHz
typ. 30 dB
typ. 30 dB
typ. 25 dB
–
typ. 16 dB
>20 dB, typ. 28 dB
>20 dB, typ. 28 dB
>18 dB, typ. 25 dB
Directivity, corrected
2 MHz to 10 MHz
10 MHz to 3 GHz
3 GHz to 6 GHz
option ¸FSH-K2
typ. 40 dB
typ. 43 dB
–
typ. 40 dB
typ. 40 dB
typ. 37 dB
Return loss at test port
10 MHz to 50 MHz
50 MHz to 3 GHz
3 GHz to 6 GHz
typ. 20 dB
typ. 20 dB
–
>12 dB, typ. 18 dB
>16 dB, typ. 22 dB
>16 dB, typ. 22 dB
Return loss at test port, corrected
2 MHz to 3 GHz
3 GHz to 6 GHz
option ¸FSH-K2
typ. 35 dB
–
typ. 40 dB
typ. 37 dB
Insertion loss
Test port
Bypass
typ. 9 dB
–
typ. 9 dB
typ. 4 dB
DC bias
Max. input voltage – 50 V
Max. input current – 300 mA
Type of connector – BNC female
Connectors
Generator input/RF output N male
Test port N female
Control interface 7-contact connector (type Binder)
Calibration standards ¸FSH-Z29/-Z30/-Z31 ¸FSH-Z28
Short/open N male
50 Wload N male
Impedance 50 W
Return loss
DC to 3 GHz
3 GHz to 6 GHz
>43 dB
–
>40 dB, typ. 46 dB
>37 dB, typ. 43 dB
Power-handling capacity 1 W 1 W
General data
Power consumption – 3 mW (nominal)
Dimensions (W × H × D) 169 mm × 116 mm × 30 mm 149 mm × 144 mm × 45 mm
Weight 485 g 620 g
Distance-to-Fault Measurement option ¸FSH-B1 only with ¸FSH3 models .13/.23/.26
and ¸FSH-Z2/-Z3 VSWRbridges
Display 301 pixel
Maximum resolution, distance to fault maximum zoom cable length/1023 pixel
Display range
Return loss
VSWR
Reflection factor (r)
milliRHO (mr)
with option ¸FSH-K2
10, 5, 2, 1 dB/div, linear
1 to 2 and 1 to 6,
in addition 1 to 1.2 and 1 to 1.5
0 to 1, 0 to 0.1, 0 to 0.01, 0 to 0.001
0 to 1000, 0 to 100, 0 to 10, 0 to 1
Cable length depending on cable loss 3 m to max. 1000 m
Maximum permissible spurious signal 1st mixer 1 dB compression point typ. +10 dBm
IF overload at reference level typ. +8 dB
Handheld Spectrum Analyzer ¸FSH18