SPECTRUM ANALYZERS
164 www.anritsu.com For product ordering information, see pages 4-7.
GPIB
High-Speed Measurement of Various Devices
SPECTRUM ANALYZER
MS2601B/K
9 kHz to 2.2 GHz
The MS2601B/K is a wide-band spectrum analyzer which covers the
video to VHF/UHF bands. The synthesized local oscillator and automatic calibration, which uses a highly accurate signal source, enable
accurate frequency and level measurement. In addition, the MS2601B/K
has new and original functions such as the zone marker and scroll
function, that shorten measurement time. Furthermore, plug-in memory cards (PMCs) for storing measurement conditions and waveform
data offer excellent operability.
Advanced functions
•
High-level built-in automatic calibration
The MS2601B/K automatically calibrates itself using the calibration
signal from the built-in signal source each time the CAL key is pressed.
The calibration data is processed at high speed by a 16-bit microprocessor and the compensation value is added to the displayed
measured value. The reliability of measurements has been greatly
improved and the measurement error has been reduced to about
one-third of conventional models, resulting in a general level measurement accuracy of 1 dB.
Furthermore, when the working temperature changes drastically, an
accurate measurement can be made just by pressing the CAL key.
• Digital technology supports high-accuracy measurement
Digital technology, including a synthesized local signal, has been used
to greatly improve the level measurement accuracy. Also, the signal
peak-level frequency can be measured with 1 Hz resolution even at a
2.2 GHz full sweep. Furthermore, in addition to having a QP detector, three resolution bandwidths, and time constants based on CISPR standards, the antenna calibration coefficients are automatically
calculated to facilitate the best EMI measurement.
• IC cards for spectrum analyzers
The age of spectrum analyzers operated by IC cards has now arrived.
The MS2601B/K uses IC memory cards called PMCs to store measurement conditions and waveform data. For example, once the test
procedures are stored in the PMCs, measurements can be made under the same conditions at any time. You can keep your hard-earned
measurement conditions as your personal know-how. Also, if these
PMCs are used with the Personal Test Automation (PTA) program
memory, automatic measurement can be packaged in a card.
• PTA widens realm of automatic measurements
The PTA function is a high-level language for measurement and a
computer integrated in a spectrum analyzer. Programs for measurements, operation, and display, etc. can be input to the MS2601B/K via
the keyboard or a personal computer. Thus, the spectrum analyzer can
be configured quickly into automatic test equipment. PTA supports
complicated measurements as well as preparation of final test results.
The MS2601B/K can be used as a frequency counter, power meter,
and real-time computer for measurement operations, or as ATE combining these functions, as well as a spectrum analyzer. Also, various
support software is available to enable connection to factory automation LANs (local area networks).
Main applications
•
Measuring transmission quality such as spurious emissions from
radio communication equipment
• Measuring electromagnetic interference (EMI)
• Testing high-frequency parts such as RF converters and tuners
• Measuring various devices such as filters and ICs
Measurement examples
Correct frequency count even at 2.2 GHz-span sweep
The zone markers can be aligned with the desired signal even while
observing the entire signal at full span sweep. A 2.2 GHz signal frequency can be measured at 1 Hz resolution (see below).
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SPECTRUM ANALYZERS
2
Model
Overall level accuracy of ±1 dB
Reproducible high-accuracy level measurements are ensured through
internal signal calibration, initiated simply by pressing the CAL key on
the MS2601B/K (see below). In addition, there is little cumulative LOG
linearity error so that measurements of transmission characteristics
are carried out with the same high accuracy achieved by network analyzers.
Zone marker easily locates signals.
This zone marker function (patent pending) has been developed to reduce
the measurement time. Simply enter zone markers around the signal
frequency and the peak value within that zone will be measured with
0.03 dB resolution and displayed, even if the exact frequency varies. This
eliminates troublesome marker adjustment to the signal peak each time
you want to read the frequency and level
(see below)
. The frequencyadjustment capability for an oscillator under test has been increased
remarkably, and the frequency display remains visible during adjustment.
Frequency axis scroll function
Sometimes the signal on the left or right of the displayed portion must
be examined in detail during a slow sweep (see below). Just press the
scroll key to move the display two divisions left or right on the screen.
This permits areas beyond the edge of the screen to be displayed
without waiting for a new sweep to display the entire waveform.
EMI measurement
In addition to providing a QP detector and three resolution bandwidths and time constants based on CISPR standards, antenna calibration coefficients are automatically calculated to facilitate easy
EMI measurement.
Application software
MX4102B Transmitter Test System Software
The MX4102B software can be used for efficient testing of mobile
transmitter equipment that uses PTA (optional). This software can be
used to measure frequency, high-order harmonic spurious components (second to fifth order harmonics), occupied bandwidths, and
the adjacent channel power.
Specifications
MS2601B
9 kHz to 2.2 GHz
0 to 2210 MHz (stop frequency: ≥1 kHz)
20 Hz
CENTER/SPAN, START/SPAN, START/STOP
Set frequency span (stop freq.– start freq.) to 2 digit value (10 to 98)
±(100 Hz + freq. span x 2% + display freq. x reference freq. accuracy)
For CENTER/SPAN or START/SPAN mode, after auto-calibration, provided that freq. span is ≥10 kHz and sweep
time is ≤100 s
Setting range: 1 kHz to 2200 MHz for horizontal 10 divisions, 2-digit (10 to 98) variable, and 0 Hz (fixed tuning)
1 kHz to 2000 MHz, 1-2-5 sequence at step keys
Readout accuracy: ±2% (sweep time ≤100 s)
Resolution bandwidth: 30 Hz to 1 MHz (3 dB bandwidth), variable in 1-3 sequence, can be selected manually or
automatically coupled to frequency span
Resolution bandwidth accuracy: ±20%
Selectivity: ≤15 : 1 (ratio of 60 dB and 3 dB bandwidth)
Residual FM: ≤20 Hz p-p/0.1 s (frequency span; ≤500 kHz)
Drift: ≤300 Hz/min (frequency span; ≤500 kHz, sweep time; ≤100 s, after 1-hour warm-up at constant ambient
temperature)
≤–80 dBc (at 100 Hz resolution bandwidth, 1 Hz video bandwidth, 10 kHz from signal)
MS2601K
Measurement frequency range
Frequency setting
Display resolution
Setting mode
Frequency display accuracy
Frequency span
Resolution
Stability
Sideband noise
Frequency
Continued on next page
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166 www.anritsu.com For product ordering information, see pages 4-7.
Continued on next page
Model MS2601B MS2601K
Reference oscillator
Frequency: 10 MHz
Stability
Starting characteristic: Within ±5 x 10
–8
(after 20-minute warm-up, referred to frequency after 1-hour warm-up)
Aging rate: Within ±2 x 10
–8
/day, ≤1 x 10–7/year (referred to frequency after 24-hour warm-up)
Temperature characteristic: Within ±5 x 10
–8
(referred to frequency at 25°C)
External reference input
Frequency: 10 MHz, Level: 2 to 5 Vp-p
Function: Displays frequency at tunable marker
Display accuracy: Same as center frequency display accuracy
Function: Displays frequency difference between reference marker and tunable marker
Display accuracy: Same as frequency span display accuracy
Function: Displays received signal frequency at marker
Resolution: 1 Hz, 10 Hz, 100 Hz selectable
Accuracy: Display frequency x reference frequency accuracy ±(2 counts or 20 Hz, whichever is greater)
–130 to +20 dBm
Divisions:
8 divisions on vertical axis when top line is reference level and scale is 10 dB/div
10 divisions on vertical axis for other scales
LOG (referred to reference level):
0 to –70 dB (10 dB/div), 0 to –50 dB (5 dB/div), 0 to –20 dB (2 dB/div), 0 to –10 dB (1 dB/div)
LIN: 10%/div of reference level (calibrated in voltage, unit: V)
Linearity
LOG: ±0.2 dB/0 to –10 dB, ±0.3 dB/0 to –20 dB, ±0.5 dB/0 to –50 dB (resolution bandwidth of 100 Hz to
1 MHz), ±1 dB/0 to –70 dB (resolution bandwidth of 100 Hz to 100 kHz), after automatic calibration
LIN: ±3% of reference level (fullscale)
±0.5 dB (100 kHz to 2.0 GHz), ±1.5 dB (9 kHz to 2.2
GHz), input ATT at 20 dB
LOG: +20 to –100 dBm (setting resolution 0.1 dB),
2240 mV to 2.20 µV
LIN: 2240 mV to 70.8 µV
±0.3 dB (0 to –50 dBm), ±0.75 dB (+20 to –70 dBm) after automatic calibration at frequency of 50 MHz and frequency span ≤2 MHz (resolution bandwidth, video bandwidth, sweep time, and input ATT settings at AUTO)
±0.3 dB (after automatic calibration)
≤–120 dBm (frequency 1 MHz to 2 GHz) with 0 dB
input ATT, 300 Hz resolution bandwidth, 1 Hz video
bandwidth
≤–75 dB (frequency 5 to 800 MHz) when 0 dB input ATT and –30 dBm input level
≤–95 dBm (frequency ≥500 kHz) when 0 dB input ATT
and 75 Ω input termination
≤–100 dBm (frequency ≥500 kHz) when 0 dB input
ATT and 50 Ω input termination
Normal: Displays the level at settable marker
Delta: Displays the difference in levels between the settable marker and the reference marker
Noise measurement: Both the power of noise per 1 Hz bandwidth (dBm/Hz, dBc/Hz), and the adjacent channel
power (dBm/ch, dBc/ch) can be measured.
1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, OFF (selected manually or automatically coupled to resolution bandwidth)
dBm, dBµV, dBmV, dBµV (emf), dBµV/m
≤±1 dB (after calibration at room temperature)
6 dB bandwidth: 200 Hz, 9 kHz 120 kHz ±30% (at room temperature)
Time constants for quasi-peak detection
Charge-time constant: 45 ms (for 6 dB bandwidth at 200 Hz), or 1 ms (for 6 dB bandwidth at 9 kHz and 120 kHz)
Discharge-time constant: 500 ms (for 6 dB bandwidth at 200 Hz), 160 ms (for 6 dB bandwidth at 9 kHz), or
550 ms (for 6 dB bandwidth at 120 kHz)
Display time constant: 160 ms (for 6 dB bandwidth at 200 Hz and 9 kHz), or 100 ms (for 6 dB bandwidth at 120 kHz)
Display: LOG scale; 5 dB/div (10 div)
Linearity: ±1 dB (for –40 to 0 dB carrier wave signal, at room temperature)
Antenna correction coefficients for correct display and
measurement of field strengths (dBµV/m) can be selected for certain antennas. Antenna correction coefficients have been stored in memory for the following
antennas:
MP534A/651A, MP635A/666A, MP414B
The user may define and store antenna coefficients
(for one antenna) via the GPIB interface.
50 Ω, VSWR ≤1.5 (input ATT; ≥10 dB, frequency;
≥30 kHz), N-type connector
+25 dBm (input ATT; ≥10 dB), DC: ±50 V
Attenuation: 0 to 50 dB, in 10 dB steps (selected manually or automatically coupled to reference level)
Switching accuracy: ±1 dB (100 kHz to 1.5 GHz), ±2.0 dB (9 kHz to 2.2 GHz)
Setting range:
50 ms to 1000 s variable in 1-1.5-2-3-5-7 sequence. Range can be selected manually or automatically ac-
cording to frequency span, resolution bandwidth, and video bandwidth. It can also be set from 50 ms to 1000
s (according to the most significant 2-digits) via the GPIB interface.
Accuracy: ≤±15% (for 50 ms to 100 s range) or ≤±30% (for 100 to 1000 s range) at room temperature
FREE RUN, LINE, VIDEO, SINGLE, EXT TRIGGER
Normal: Sweeps entire range, Zone marker width setting range: 1 to 501 points (odd numbers)
Zone sweep: Sweeps range between zone markers, Zone marker width setting range: 25 to 501 points (odd numbers)
+25 dBm (input ATT; ≥10 dB), DC: ±100 V
75 Ω, VSWR ≤1.5 (input ATT; ≥10 dB, frequency; 30
kHz to 2 GHz), NC-type connector
Any set of user-defined antenna correction can be selected for correct display and measurement of field
strengths (dBµm). The user may define and store antenna coefficients (for one antenna) via the GPIB interface.
≤–114 dBm (frequency 1 MHz to 2 GHz) with 0 dB
input ATT, 300 Hz resolution bandwidth, 1 Hz video
bandwidth
LOG: +20 to –100 dBm (setting resolution 0.1 dB),
2750 mV to 2.70 µV
LIN: 2750 mV to 87.1 µV
±0.5 dB (100 kHz to 1.5 GHz), ±1.5 dB (9 kHz to 2.2
GHz), input ATT at 20 dB
–124 to +20 dBm
Markers
Measurement range
Display
Frequency response (20° to 30°C)
Setting range
Accuracy
Resolution bandwidth switching deviation
Average noise level
2nd and 3rd
harmonic distortion
Residual response
Dynamic range
Marker
Video bandwidth
Level unit
LOG/LIN switching loss
Quasi-peak detection
Field strength measurement
RF input
Input ATT
Sweep time
Trigger
Sweep range
Impedance
Maximum input level
Reference level
NORMAL
Delta
COUNT
Amplitude FrequencySweep
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SPECTRUM ANALYZERS
2
PTA model
Communication mode
Model MS2601B
Six-inch electromagnetic deflection type (green display color)
Graticule (grid), waveform data, setting conditions, menu, title
The display screen uses digital storage, 501 points of data for horizontal-axis data, and 2 display channels (A and
B): Either channel can be selected for NORMAL, AVERAGE, MAX-HOLD, or MIN-HOLD waveforms, but only channel A can be used for the CUMULATIVE and OVERWRITE mode of displaying stored data. Channels A and B can
be displayed simultaneously.
PEAK, SAMPLE and DIP can be selected.
Screen data can be hard-copied to a plotter or printer via the GPIB interface (RS-232C interface for option 02)
Plotter compatibility: HP-GL or GP-GL compatible
Printers: EPSON’s VP-870 (or compatible models), or Hewlett-Packard’s 2225
ALL CAL: Calibrates all LEVEL CAL 1, LEVEL CAL 2 and FREQ CAL functions
LEVEL CAL 1: Calibrates total gain deflection and log linearity
LEVEL CAL 2: Calibrates resolution bandwidth, reference level, and LOG/LIN switching deflection
FREQ CAL: Calibrates local frequency errors, and the center frequency of the resolution bandwidth
QP CAL: Calibrates the on/off switching error apparent in quasi-peak detection
Internal memory: Save/recall 6 setting conditions
PMC: Save/recall 12 (32 KB) or 48 (128 KB) setting conditions and measurement data
GPIB (IEEE488, IEC625-1, 24 pins): All functions except power switch, CRT intensity, PMC control, GPIB address,
AM/FM modulator (option 07) and direct plotting controlled.
Interface: SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0
IF output
Frequency: 3.6 MHz, Output level: 0 dBm ±3 dB (at the reference line on the CRT), Connector: BNC-type
50 MHz output
Frequency: 50 MHz, Output level: –2 dBm ±3 dB, Connector: BNC-type
X, Y and Z outputs
X-axis output: From 0 V (left edge) to 10 ±1 V (right edge), terminated at ≥100 kΩ, BNC-connector
Y-axis output
*
1
: From 0 V (lower edge) to 1 ±0.3 V (upper edge), terminated at ≥100 kΩ, BNC-connector
Z-axis output: TTL level (level is low while sweep is in progress), BNC-connector
Video output
Composite: 1 Vp-p ±0.3 V, BNC-connector
Separate: 8 pins, DIN-connector
Probe power supply: +5 V ±10%, +15 V ±10%, –15 V ±10% (each 110 mA max.), 4-pole connector
External trigger input: TTL level (rising edge active), BNC-connector
External reference signal input: Use 10 MHz, 2 to 5 Vp-p reference input signal (input impedance: ≥2 kΩ), BNC-connector
*
2
Vac
+10
–15
%, 50/60 Hz, ≤145 VA (DC operation with MZ144A Battery Pack or MZ145B DC/DC Converter)
284 (W) x 177 (H) x 451 (D) mm, ≤18.5 kg (without options)
0° to 50°C
EN55011: 1991, Group 1, Class A
EN50082-1: 1992
MS2601K
CRT
Display items
Waveform data display method
Detection method
Direct plotting
Automatic calibration
Function memory
External control
Auxiliary signal input and output
Power
Dimensions and mass
Operating temperature range
EMC
*
3
CRT display
*
1: Since Y-axis outputs are not automatically calibrated, their amplitude specifications are not guaranteed.
*
2: Specify one nominal line voltage between 100 and 240 V when ordering. Maximum operational voltage is 250 V.
*
3: Electromagnetic Compatibility
Options
•
Option 01: PTA (with external keyboard), Option 04: PTA (without keyboard)
PTA-S201
Number of display characters: 57 characters x 25 lines (small), 48 characters x 25 lines (medium), 41 characters x 25 lines (large)
Displayable characters: Upper-case and lower-case characters, numerals, special symbols, and cursor
Character font: 7 x 11 dot matrix (small), 9 x 13 dot matrix (medium ), 10 x 13 dot matrix (large)
Graphic: 4 screens, 400 x 575 dots
Character keys: Upper-case and lower-case characters, numerals, and special symbols
Editing keys: DEL, INS, < , > , ,
Command keys: RUN, STEP, RETURN, RES
Program area: 200 KB
Commands: Basic commands (18 types) and GPIB statements (2 types)
Functions: Arithmetic functions, logical functions, and system functions
System subroutines: Display subroutines and GPIB subroutines
Variables: Numeric, string, and system variable
Interfaces: GPIB and I/O ports, RS-232C and I/O port (Option 02)
Display
Keyboard
PTL
•
Option 02: RS-232C interface
Start-stop, full-duplex
300, 600, 1200, 2400, 4800 bps
7, 8
Odd, even, none
1 bit
1, 1.5, 2 bits
All items except power on/off, CRT intensity, PMC
management, AM/FM modulator (Option 02), direct plotting and RS-232C parameters
DB-25P or equivalent
Baud rate
Data bit
Parity bit
Start bit
Stop bit
Control items
Connector
<
>
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168 www.anritsu.com For product ordering information, see pages 4-7.
Option
Model/Order No. Model/Order No.
•
Option 05: Following changes to specifications
MS2601B option 05
100 Hz to 2.2 GHz
±0.5 dB (100 Hz to 2.0 GHz), input ATT at 20 dB, temperature range 20° to 30°C
Average noise level:
Following added to standard model
≤–80 dBm (1 to 10 kHz)
≤–100 dBm (10 to 100 kHz)
≤–110 dBm (100 kHz to 1 MHz)
At 0 dB input ATT, 30 Hz RBW, 1 Hz VBW
Impedance: 50 Ω, VSWR ≤1.5
At ≥10 dB input ATT, ≥100 Hz frequency
Maximum input level: +25 dBm (≥10 dB input ATT), DC ±0 V
±1.0 dB (1 kHz to 1.5 GHz), ±2.0 dB (1.5 to 2.0 GHz)
Impedance: 75 Ω, VSWR ≤1.5
At ≥10 dB input ATT, 100 Hz to 2 GHz frequency
Average noise level:
Following added to standard model
≤–74 dBm (1 to 10 kHz)
≤–94 dBm (10 to 100 kHz)
≤–104 dBm (100 kHz to 1 MHz)
At 0 dB input ATT, 30 Hz RBW, 1 Hz VBW
±0.5 dB (100 Hz to 1.5 GHz), input ATT at 20 dB, temperature range 20° to 30°C
MS2601K option 05
Frequency measurement range
Frequency response
Dynamic range
RF input
Input ATT switching accuracy
Amplitude
Ordering information
Please specify model/order number, name, and quantity when ordering.
Name
Main frame
MS2601B Spectrum Analyzer (RF input: 50 Ω)
MS2601K Spectrum Analyzer (RF input: 75 Ω)
MS2601B standard accessories
J0025A Coaxial cord, N-P-5W • 5D-2W • N-P-5W, 1 m: 1 pc
J0104 Coaxial cord, UG-88U • RG55/U • N-P-55U, 1 m: 1 pc
J0017 Power cord, 2.5 m: 1 pc
F0012 Fuse, 3.15 A: 2 pcs
P0005 Memory card, 32 KB: 1 pc
MS2601B/K operation manual: 1 copy
MS2601B/K service manual: 1 copy
MS2601K standard accessories
J0308 Coaxial cord, BNC-P • 3C-2WS • NCP-3W, 1 m: 1 pc
J0121 Coaxial cord, NCP-3W • 3C-2WS • NCP-3W, 1 m: 1 pc
J0017 Power cord, 2.5 m: 1 pc
F0012 Fuse, 3.15 A: 2 pcs
P0005 Memory card, 32 KB: 1 pc
MS2601B/K operation manual: 1 copy
MS2601B/K service manual: 1 copy
Options
MS2601-01 PTA (with external JIS type PTA keyboard)
MS2601-02 RS232C interface (used in exchange for GPIB interface)
MS2601-04 PTA (without PTA keyboard)
MS2601-05 Frequency range: 100 Hz to 2.2 GHz (MS2601B: with
MA8601A, MS2601K: with MA8601J)
MS2601-07 AM/FM Modulator (cannot be installed simultaneously
with Option 09)
MS2601-08 Protector (cannot be installed simultaneously with B0025
protective front cover)
MS2601-09 Tilt Handle (cannot be installed simultaneously with
Option 07)
Optional instruments and parts
MC3305A JIS Type PTA Keyboard
MC3306A ASCII Type PTA Keyboard
MX4102B Transmitter Test System Software
P0007 Memory card, 128 KB
P0008 Memory card, 256 KB
MA8601A DC Block Adapter (50 Ω)
MA8601J DC Block Adapter (75 Ω)
MH680A1 Tracking Generator
MA8610A Pre-amplifier (9 kHz to 2.2 GHz)
MH648A Pre-amplifier
MZ144A Battery Pack
MZ145B DC/DC Converter
MP534A Dipole Antenna
MP651A Dipole Antenna
Name
BBA9106 Biconical antenna (30 to 300 MHz, 50 Ω)
6502 Loop antenna (10 kHz to 30 MHz, 50 Ω)
MP635A Log-periodic Antenna
MP666A Log-periodic Antenna
MB18B Pole (for MP666A)
MB9A Tripod
MB19A Tripod (with a pole, for MP635A/666A)
MP414B Loop Antenna (9 kHz to 30 MHz, 3 bands)
MP415B Rod Antenna (9 kHz to 30 MHz, 3 bands)
MZ126A Band Selector (for MP414B/MP415B)
MP612A RF Fuse Holder (DC to 1000 MHz, 50 Ω)
MP613A Fuse Element (5 pcs/set, for MP612A)
MP640A Branch
MP654A Coupler
J0063 Fixed attenuator for high power measurement (10 W, DC
to 12.4 GHz, 30 dB)
J0395 Fixed attenuator for high power measurement (30 W, DC
to 9 GHz, 30 dB)
MP526A High-Pass Filter (for 60 MHz band)
MP526B High-Pass Filter (for 150 MHz band)
MP526C High-Pass Filter (for 250 MHz band)
MP526D High-Pass Filter (for 400 MHz band)
MP526G High-Pass Filter (for 27 MHz band)
B0215 Rack mount
B0213 Carrying case (with casters)
B0214 Carrying case (without casters)
B0225 Carrying bag (with casters)
B0226 Carrying bag (without casters)
B0025 Protective front cover (cannot be installed simultaneously
with option 08)
B0029 Stacking feet
B0038 Front handle kit
B0231 CRT hood
MP520A CM Directional Coupler
MP520B CM Directional Coupler
MP520C CM Directional Coupler
MP520D CM Directional Coupler
MP614A 50/75 Ω Impedance Transformer
MB009 50/75 Ω Impedance Transformer
MA2601B EMI Probe
MA2601C EMI Probe
KT-10 EMI clamp
P6201 FET probe (Tektronix product)
MA8611A EMI Probe Kit (case, MA2601B, MA2601C, MA8610A, cable)
Case for MA8611A
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