Micronix MSA438 User manual

Ver.2.5/ Nov. / 2021
MICRONIX CORPORATION
3.3GHz/8.5GHz Spectrum Analyzer
MSA438(E/TG)/MSA458
Operating manual
OM-08022

–I–
Before Using the Product
· Please use following the below notes described on the back panel.
· For safe use
1) When abnormal sound, abnormal smell or smoke is found, stop using and remove the battery and AC
adapter.
2) Never use this product by wet hands, or the electric shock, a fire or the damage is caused.
3) Never use this product when thundering, or the damage by lightning may be caused.
4) Never use any AC adapter other than specified, or the damage is caused. And connect the power cable to
three-terminal outlet for protecting from static electricity, or this product or a device under test may be
damaged.
5) Never use any battery other than specified, or this product is damaged. When removing or installing the
battery, do it after turning off the power and disconnecting AC adapter.
6) Be sure to charge the battery by the specified way.
Moreover, an explosion, a fire or smoking may happen if the handling of the battery is improper.
Please read the notes of the handling of battery.
· Set clock function
The time information is set at Japan standard time. Set the year, month, day and time when MSA400 series is
used for the first time. (Refer to “24.4 Setting of clock” for the details.)

–II–
· Quality assurance
Warranty
If the defect by our responsibility occurs within one year after delivered, it shall be repaired free of
charge. However, this warranty does not cover such defect that :
1) is caused by a fire or natural disasters.
2) is caused by inappropriate handling such as dropping while moving the unit delivered.
3) is caused by handling in contradiction to usage or precautions described in the operating manual.
4) is caused by modification or misuse.
We will not be responsible for direct or indirect damage caused by use or defect of this product.
Warm-up time
Warm up the product for ten minutes at least after turning on the power in order to stabilize the internal
circuit.
Precautions for storage
1) Store this unit avoiding direct sunlight or dust.
2) Store this unit in a place where temperature is -20°C to 60°C, humidity is less than 60°C/70%RH and
also variation of temperature and humidity is small.
After service
Please contact us without hesitation if you have any questions about this product:
MICRONIX CORPORATION
2987-2, KOBIKI-CHO, HACHIOJI-SHI, TOKYO 193-0934 JAPAN
TEL. [phone] FAX. [phone]
URL: http://www.micronix-jp.com/ E-mail: [e-mail]

1. Outline ----------------------------------------------------------------- 1
1.1 Product outlines --------------------------------------------------- 1
1.2 Standard accessories ----------------------------------------------- 2
1.3 Lineup of four models ---------------------------------------------- 2
2. Specifications --------------------------------------------------------- 3
2.1 Performances ---------------------------------------------------- 3
2.2 External view --------------------------------------------------- 6
3. Explanation of Panel -------------------------------------------------- 7
4. Explanation of Screen ------------------------------------------------ 10
5. Function Menu ------------------------------------------------------- 11
5.1 List of function menu -------------------------------------------- 11
5.2 Menu tree ----------------------------------------------------- 12
6. Preparing for Operation ---------------------------------------------- 18
6.1 Stand --------------------------------------------------------- 18
6.2 Connection to power supply --------------------------------------- 18
6.3 Battery charge -------------------------------------------------- 19
6.4 Installation of battery -------------------------------------------- 19
7. Center Frequency <FREQ> ------------------------------------------- 20
7.1 Setting with step key ([F1], [F2]) ----------------------------------- 20
7.2 Setting with encoder --------------------------------------------- 20
7.3 Setting with numeric key ----------------------------------------- 21
7.4 According to marker position -------------------------------------- 22
8. Frequency Span <SPAN> --------------------------------------------- 22
9. Reference Level <REFER> ------------------------------------------- 24
9.1 Setting of reference level ----------------------------------------- 24
9.2 Changing of unit of amplitude axis ---------------------------------- 24
9.3 Setting of step size of reference level -------------------------------- 24
9.4 On-off setting of offset ------------------------------------------- 24
9.5 Setting of offset level -------------------------------------------- 24
9.6 Setting of input impedance ---------------------------------------- 25
9.7 Reference level setting range for each unit ----------------------------- 25
9.8 Relation between reference level and ATT/AMP (at dBm ) ---------------- 26
10. Display Scale <SCALE> --------------------------------------------- 27
10.1 Setting with function key ---------------------------------------- 27
11. Resolution Bandwidth <RBW> -------------------------------------- 27
11.1 MANUAL mode ----------------------------------------------- 27
11.2 AUTO mode -------------------------------------------------- 28
11.3 ALL AUTO mode ---------------------------------------------- 28
Contents

12. Video Bandwidth <VBW> ------------------------------------------- 28
12.1 MANUAL mode ----------------------------------------------- 28
12.2 AUTO mode -------------------------------------------------- 28
12.3 ALL AUTO mode ---------------------------------------------- 29
13. Sweep Axis / Detection Mode <SWEEP> ----------------------------- 29
13.1 MANUAL mode ----------------------------------------------- 29
13.2 AUTO mode -------------------------------------------------- 29
13.3 ALL AUTO mode ---------------------------------------------- 29
13.4 Setting of Detection mode ---------------------------------------- 30
13.5 Setting of Trigger source ------------------------------------------ 30
14. AUTO Tuning <AUTO TUNE> -------------------------------------- 30
15. Hold / Run <HOLD/RUN> ------------------------------------------ 30
16. Calculation Function <CALC> -------------------------------------- 31
16.1 NORMAL mode ----------------------------------------------- 31
16.2 MAX HOLD mode --------------------------------------------- 31
16.3 MIN HOLD mode ---------------------------------------------- 31
16.4 AVERAGE mode ---------------------------------------------- 32
16.5 OVER WRITE mode ------------------------------------------- 32
16.6 SPURIOUS FREE mode ----------------------------------------- 32
17. Marker & peak search <MKR> -------------------------------------- 33
17.1 Movement and basic function of marker ----------------------------- 34
17.2 Normal peak search --------------------------------------------- 34
17.3 Zone peak search ----------------------------------------------- 35
17.4 Change for unit at maker level ------------------------------------ 35
18. Save / Load <SAVE/LOAD> ----------------------------------------- 36
18.1 Selection of storage device --------------------------------------- 36
18.2 Save function -------------------------------------------------- 37
18.3 About file name ------------------------------------------------ 37
18.4 Load function ------------------------------------------------- 38
18.5 Delete function ------------------------------------------------ 39
18.6 Presetting (Initialization) ----------------------------------------- 40
19. Measuring Function <MEAS> --------------------------------------- 41
19.1 Channel power measurement <CH POWER> ------------------------ 42
19.2 Adjacent channel leakage power measurement <ACP> ----------------- 43
19.3 Occupied bandwidth measurement <OBW> ------------------------- 44
19.4 Electric field strength measurement <E/F ANT> ---------------------- 45
19.5 Magnetic field strength measurement <M/F PROBE> ------------------ 50
19.6 Frequency counter <FREQ COUNT> (factory option) ----------------- 51
20. EMI Test (MSA438E) ----------------------------------------------- 52
20.1 Additional function for EMI test ----------------------------------- 52
20.2 EMI test ------------------------------------------------------ 53

21. Screen Control <DSPL> --------------------------------------------- 56
21.1 Setting of color of screen display ---------------------------------- 56
21.2 ON/OFF switching of LCD backlight ------------------------------- 56
21.3 Adjustment of brightness of LCD backlight -------------------------- 56
22. Tracking Generator Mode (MSA438TG) ----------------------------- 57
22.1 Specification of T.G. function ------------------------------------- 57
22.2 Description of I/O connector -------------------------------------- 57
22.3 ON/OFF Switching of TG function --------------------------------- 58
22.4 Normalizing function -------------------------------------------- 58
23. Storage and print of screen image <COPY> -------------------------- 59
23.1 Selection of image area ------------------------------------------ 59
23.2 Print on printer -------------------------------------------------- 59
23.3 Storage into USB memory ----------------------------------------- 59
23.4 Transferring internal data to USB memory in a lump sum ---------------- 59
23.5 USB printer (option) --------------------------------------------- 60
23.6 USB memory --------------------------------------------------- 60
24. Utility Function <UTIL> -------------------------------------------- 61
24.1 Label function ------------------------------------------------- 61
24.2 Menu off ----------------------------------------------------- 62
24.3 Buzzer setting ------------------------------------------------- 62
24.4 Setting of clock ------------------------------------------------ 63
25. USB device Function ------------------------------------------------ 64
25.1 Outline ------------------------------------------------------- 64
25.2 How to connect ------------------------------------------------ 64
25.3 Installation of driver -------------------------------------------- 64
25.4 Sample program ----------------------------------------------- 65
25.5 Explanation of Command ---------------------------------------- 65
25.6 Input of frequency ---------------------------------------------- 72
25.7 Transfer of spectrum data ----------------------------------------- 72
25.8 Writing of original compensation data -------------------------------- 73
26. Option -------------------------------------------------------------- 75
27. Basis Performance Test (MSA438/438E/438TG/458) ------------------ 78
27.1 Frequency characteristics ---------------------------------------- 78
27.2 Accuracy of reference level --------------------------------------- 79
27.3 Display accuracy of center frequency ------------------------------- 79
27.4 Display accuracy of frequency span -------------------------------- 80
27.5 Linearity of amplitude axis --------------------------------------- 80

－ 1 －
1. Outline
1.1 Product outlines
MSA400 series is an authentic spectrum analyzer providing performance and functions that are comparable
to those of large-size bench type equipment, in a compact, lightweight and inexpensive model.
The features are as follows.
1) Compact and lightweight 1.8kg
The dimensions are as small as 162(W)×71(H)×265(D)mm, and the weight is only 1.8kg including the
battery. It is very convenient for outdoor use and on business trip.
2) Large and color TFT display
5.7 inches, 640×480 dots and color LCD
3) Four hours battery operation
Lithium-ion battery MB400 (option) fully charged enables about four-hour battery operation at minimum
backlight brightness .
4) USB memory (A plug)
USB memory can be used as a removable storage. The screen image is stored by BMP format, and the
spectrum and the setting parameters are stored by CSV format .
5) USB communication (B plug)
Such fast transfer rate as 12Mbps maximum was achieved by adoption of USB interface.
6) Accurate frequency measurement by PLL synthesizer
The center frequency is accurately set by PLL (Phase Locked Loop) synthesizer. Moreover, the frequency
counter (factory option) enables to measure the frequency of the signal more accurately.
7) Average noise level -127dBm (MSA438(E/TG))
The low average noise level of -127dBm @ 1GHz provides a wide dynamic range.
8) 100dB display dynamic range
As the display scale in the amplitude axis is 100dB/10div (at 10dB/div), the signal is observed in a wide
dynamic range.
9) Easy operation by AUTO mode
● By auto range operation, RBW, VBW and sweep time are automatically selected based on the frequency
span .
● By auto tuning operation, the center frequency is adjusted to the maximum level within full span, and the
optimum RBW, VBW and sweep time are chosen.

－ 2 －
10)Competitive functions
● Measuring functions : Channel power, Adjacent channel power, Occupied bandwidth, Electric field
strength, Magnetic field strength and Frequency measurement.
● Calculation functions : Max hold, Min hold, Averaging, Over write
● Marker measurement and peak search function
● Save/Load function
● Hard copy with printer
11)Abundant options
A lot of options such as PC software, Logging software, VSWR bridge, Dipole antenna, Magnetic field probe,
USB printer, Frequency counter, Lithium-ion battery and Test accessories are available.
1.2 Standard accessories
1. AC adaptor MA400
2. Carrying case
3. Accessory pouch
4. Operating manual
1.3 Lineup of four models
Model Contents
MSA438
50kHz to 3.3GHz
The most popular model
Applications: Cellular phone, 2.4GHz wireless LAN, 2.5GHz WiMAX, RF-ID,
Broadcasting
MSA458
50kHz to 8.5GHz
Covering most of the wireless communication
Applications: 5GHz wireless LAN, 3.5/5.8GHz WiMAX, ETC/DSRC,
Maintenance of wireless base station
MSA438TG
50kHz to 3.3GHz
With 5MHz to 3.3GHz tracking generator
Applications: Frequency characteristics measurement of electronic
component/circuit and return loss measurement
MSA438E
50kHz to 3.3GHz
For EMI test
Applications: Radiated emission measurement and conducted emission
measurement

－ 3 －
2. Specifications
2.1 Performances
■ Frequency section
MSA438/438E/438TG MSA458
Frequency range 50kHz to 3.3GHz 50kHz to 8.5GHz
Frequency
range
Frequency
band
Harmonic
order
50k to 3.5GHz Base band 1
3.3G to 6.3GHz Band 1- 1
―――
6.1G to 8.5GHz Band 1+ 1
Center frequency
Setting
resolution
20kHz
Allows rotary encoder, numeric key and function key
Accuracy ± (30+20T)kHz ± 1dot
@frequency span: 200kHz to 10MHz,
RBW 3kHz, 23 ± 5 °C
± (60+300T)kHz ± 1dot
@frequency span: 20MHz to 3.3GHz,
RBW 100kHz、23 ± 5 °C
T: sweep time (s)
± (30+20T)kHz ± 1dot
@frequency span: 200kHz to 10MHz,
RBW 3kHz, 23 ± 5 °C
± (60＋300T)kHz ± 1dot
@frequency span: 20MHz to 8.5GHz,
RBW 100kHz, 23 ± 5 °C
T: sweep time (s)
RBW
frequency
error
±4kHz @ 3kHz, 10kHz, 30kHz
RBW ± 20% @ RBW: 100kHz, 300kHz
RBW ± 10% @ RBW: 1MHz, 3MHz
Frequency span
Setting range 0Hz (zero span),
200kHz to 2GHz (1-2-5 step) and
3.3GHz (full span)
0Hz (zero span),
200kHz to 5GHz (1-2-5 step) and
8.5GHz (full span)
Accuracy ±3% ±1dot
@ one step slower sweep time than AUTO, 23 ± 5 °C
Display dots 501dots @ LCD screen, 1001dots @ USB communication
※1001 dots are captured in the unit.
Resolution bandwidth 3dB bandwidth (6dB for MSA438E@ 9kHz, 120kHz, 1MHz)
Setting range 3kHz to 3MHz (1-3 step) and AUTO
(MSA438E: 3kHz, 9kHz, 30kHz, 120kHz, 300kHz, 1MHz, 3MHz)
Accuracy ±20%
Selectivity 1：12 (typical, 3dB : 60dB)
Video bandwidth 100Hz to 1MHz (1-3 step) and AUTO
SSB phase noise -90dBc/Hz (typical)
@100kHz offset, RBW：3kHz, VBW：100Hz, sweep time: 1s
Spurious response less than -60dBc
Harmonics less than -40dBc @ ≧100MHz

－ 4 －
■ Amplitude section
MSA438/438E/438TG MSA458
Reference level
Setting range +10 to -60dBm (1dB step)
Accuracy ±0.8dB ±1dot
@CF：100MHz, RBW：3MHz, VBW：1MHz, REF：-15dBm, 23 ± 5 °C
Unit dBm, dBV, dBmV, dBμV, dBμV/m, dBμA/m
(dBμV/m and dBμA/m are used in the measuring function)
Average noise level -127dBm (typical) @ CF：1GHz,
RBW：3kHz, VBW：100Hz
-123dBm (typical) @ CF：1GHz,
RBW：3kHz, VBW：100Hz
Frequency
characteristics
±2.0dB ±1dot @50kHz to 100MHz
±1.0dB ±1dot @ 100MHz to 3.3GHz
±2.0dB ±1dot @50kHz to 100MHz
±1.0dB ±1dot @100MHz to 8.5GHz
Input impedance 50Ω
Input VSWR less than 2.0
Input attenuator
Operating
range
0 to 25dB (1dB step), coupled with reference level
Switching
error
±0.6dB @100MHz
RBW switching error ±0.6dB
Display dots 381 dots/10div
Scale 10dB/div, 5dB/div, 2dB/div
Display
scale Accuracy
±(0.2dB+1dot)/2dB ±(0.4dB+1dot)/5dB
±(0.8dB+1dot)/10dB ±(1.8dB+1dot)/83dB
Input damage level +27dBm(CW average power), 25VDC
■ Sweep section
MSA438/438E/438TG MSA458
Sweep time
Setting range 10ms to 30s and AUTO
@frequency span : 0 to 2GHz
30ms to 30s and AUTO
@frequency span : full span
※1-3 step
10ms to 30s and AUTO
@frequency span : 0 to 2GHz
30ms to 30s and AUTO
@frequency span : 5GHz, full span
※1-3 step
±0.1%±1dot
@frequency span : 0 to 2GHz
±0.1%±1dot
@frequency span : 0 to 5GHz
Accuracy
±1.5%±1dot @ full span ±2.5%±1dot @ full span
Trigger
Trigger mode AUTO (Available only for zero span)
Trigger source Internal and External

－ 5 －
External trigger
Input voltage range
Frequency range
Input coupling
Trigger level
Input RC
Input damage level
Input connector
1 to 10Vp-p
DC to 5MHz
DC coupling
approx. 0.56V(fix)
approx. 10kΩ// less than 15pF
±50V(DC+AC peak)
SMA(J)
Detection mode Positive peak, Negative peak, Sample
(As for MSA438E, QP and AV are added further.)
■Function
MSA438/438E/438TG/458 common
Marker measurement NORM：displays frequency (8digits max) and level (4digits max) at marker point.
DELTA：displays frequency difference and level difference between two markers.
Peak search function Searches for peak level with all of 10 div (NORM mode) or within ZONE specified
(ZONE mode) and displays frequency and level at peak level, and moreover NEXT
peak at NORM mode.
Calculation function NORM, MAX HOLD, MIN HOLD, AVERAGE, OVER WRITE
Number of sweeps is 2 to 1024 (power of 2 ) and infinite.
Measuring function Channel power, Adjacent channel power, Occupied bandwidth, Electric field strength
(needs optional dipole antenna), Magnetic field strength (needs optional magnetic field
probe) and Frequency counter (factory option)
Auto tuning When pressing AUTO TUNE key, the spectrum of maximum level within full span is
adjusted to center, and reference level, RBW, VBW and sweep time are set to optimum
parameters.
Save Saves 200 spectrums and 200 setting parameters
Save/
Load
Load Loads one spectrum and one setting parameter
■ General
MSA438/438E/438TG/458 common
Input connector N(J) connector
Communication
Interface Corresponding to USB 2.0
Connector B plug (device)
Transfer rate Full speed (12Mbps)
Hard copy USB printer (option) connected to A plug (host) enables hard copy of screen.
USB memory Uses Aplug (host), and stores spectrum data, setting parameters and spectrum data
+ setting parameters .
Display
Display 5.7 inches and color LCD
Backlight LED backlight
Number of dots 640(H) x 480(V) dots
Power supply
Kind of
power supply
External DC source (by dedicated AC adaptor MA400) and Lithium-ion battery
(by optional MB400)

－ 6 －
Dedicated
AC adaptor
Input : 100 to 240VAC
Output : 9VDC/2.6A
Lithium-ion battery
Charge function
Remainder indication
MB400 : 7.4V/5000mAh
Capable of charging during power-off.
Indicates 4 conditions with two colors LED (red and green).
5 levels indication
■ Other
MSA438/438E/438TG/458 common
Operating temperature 0 to 50°C (guaranteed at 23±10°C, without soft carrying case)
Operating humidity less than 40°C/80%RH
(guaranteed at less than 33°C/70%RH, without soft carrying case)
Storage temperature -20 to 60°C, less than 60°C/70%RH
Dimensions 162(W) x 71(H) x 265(D)mm (excluding projections, protection bumper and stand)
Weight approx. 1.8kg (including battery)
* Refer to 『22. Tracking Generator Mode』for the specifications of MSA438TG.
2.2 External view
[Unit : mm]
* MICRONIX Corporation reserves the right to make changes in design, specification and other information without prior notice.

－ 7 －
3. Explanation of Panel

－ 8 －
1) TFT display
This is a large liquid crystal display with 480 (V) × 640 (H) dots. It simultaneously displays spectrum
(10div × 10div), various setting parameters, measured values and etc.
2) Function key (F1 to F6)
The function is changed according to the operation key.
3) Center frequency key
The center frequency is set with this key. The setting range is 0 to 3.3GHz(for MSA438, MSA438TG
and MSA438E), and 0 to 8.5GHz(for MSA458). The setting resolution is 20kHz.
4) Frequency span key
The frequency span is set with this key.
For MSA438, MSA438TG and MSA438E, it is set in/to the range from 200kHz to 2GHz, ZERO SPAN
or FULL SPAN (3.3GHz). For MSA458, it is set in/to the range from 200kHz to 5GHz, ZERO SPAN or
FULL SPAN (8.5GHz).
5) Reference level key
The reference level is set with this key. It can be set in the range from +10dBm to –60dBm by 1dB step.
6) Resolution bandwidth key
The resolution bandwidth is set with this key. It can be set in the range from 3kHz to 3MHz and to
AUTO.
7) Video bandwidth key
The video bandwidth is set with this key. It can be set in the range from 100Hz to 1MHz and to AUTO.
8) AUTO tuning key
When pushing this key, the spectrum with the maximum level is searched within full span (3.3GHz @
MSA438/438TG/438E and 8.5GHz @ MSA458), and then it is adjusted to the center of the screen, and
the optimum setting parameters are set. In case of zero span, full span, input signal level lower than
–40dBm and input frequency lower than 50MHz, this function doesn’t work correctly.
9) Measuring function key
Available for Channel power, Adjacent channel leakage power, Occupied frequency bandwidth, Electric
field strength, Magnetic field strength measurement and Frequency counter (factory option)
10) Calculation function key
Available for Max hold, Min hold, Average and Over write.

－ 9 －
11) Display scale key
The display scale of amplitude axis of 2dB/div , 5dB/div or 10dB/div is selectable with this key.
12) Sweep key
The sweep time is set in the range from 10ms to 30s and to AUTO. And also the detection mode is
selected.
13) Hold/Run key
The measurement is stopped or restarted.
14) Marker & Peak search key
The setting and the operation of marker or peak search are performed.
15) Save/Load key
The spectrum or the setting parameters is saved or loaded.
16) Copy key
The screen image is printed on USB printer (option) or stored in USB memory.
17) UTIL key
The setting of subsidiary functions such as label entry, clock, buzzer and others are performed.
18) Display control key
Color, backlight ON/OFF or brightness of backlight are set.
19) Rotary encoder
This is used for the various setting .
20) Power switch
This is for power ON or OFF.
21) Input connector
N(J) connector
22) Indicator for charging condition
Two colors LED indicates the charging conditions of battery.
23) Input connector for DC power source
AC adaptor MA400 is connected.

－ 10 －
24) USB A plug
USB printer (option) or USB memory is connected.
25) USB B plug
The PC through USB cable MI400(option) is connected.
4. Explanation of Screen
Sweep axis setting
values display
Spectrum display
10div×10div
Function menu
Frequency axis setting values display
Center frequency, Frequency span,
Resolution bandwidth, Video bandwidth
Amplitude axis setting values display
Reference level, Input attenuator,
Display scale
Sweep time,
Detection mode
Calculation function display
Measuring function display
Operating information display
Loaded spectrum information display
* This is also used as a setting values display
when the measuring function is used.
Measured values display
UNCAL
UNCAL Display
Remaining battery
level display
Upper : Label display
Lower : Clock display
Active area display

－ 11 －
5. Function Menu
5.1 List of function menu
The function menu are shown in the table below. For description of each function, see the appropriate page.
For the sequence of selection for the function menu, refer to “5.2 Menu tree”.
※1 MSA438E only ※2 MSA458 only ※3 MSA438TG only
Function menu Key sequence Page
ACP OFFSET MEAS→（F2）→F2 43
ACP MEAS→F2 43
ACP WIDTH MEAS→（F2）→F3 43
ANT MEAS→（F4）→F1 46
A
AVG CALC→F4 32
BACK LT DSPL→F2 56
BACK SPACE FREQ→F6→F5 21
BAND CNTR MEAS→（F1）→（F1）→F2 42
BAND WIDTH MEAS→（F1）→（F1）→F3 42
BRIGHT DSPL→F3 56
B
BUZZER UTIL→F3 61
CENTER FREQ →FREQ→F1 20
CENTER FREQ ←FREQ→F2 20
CH POWER MEAS→F1 42
CLEAR FREQ→F6→F4 21
CLOCK CONFIG UTIL→F4 61
COLOR DSPL→F1 56
C
CONV MKR→F6 33
DELETE SAVE/LOAD→F3 36
DEVICE MEM SAVE/LOAD→F4 36
DET SWEEP→F4 29
D
DISP CLEAR SAVE/LOAD→F2→F5 38
E/F ANT MEAS→F4 45
EncST FREQ→F4 20
EMI-C ※1 SAVE/LOAD→F6→F2 52
E
EMI-R ※1 SAVE/LOAD→F6→F3 52
F FREQ COUNT MEAS→F6 51
I IMP REFER→F6 24
K KeyST FREQ→F3 20
LABEL UTIL→F1 61
L
LOAD SAVE/LOAD→F2 16
M/F PROBE MEAS→F5 50
MAX HLD CALC→F2 31
MEAS OFF MEAS→（F1~5）→F6 41
MIN HLD CALC→F3 31
MARKER DELTA MKR→F2 33
M
MARKER NORMAL MKR→F1 33
Function menu Key sequence Page
M
MODE MEAS→（F1～F3）→F1 42 to 44
NEXT PEAK MKR→（F4）→F2 34
NORMAL CALC→F1 31
N
NORMAL ※1 SAVE/LOAD→F6→F1 52
OBW MEAS→F3 41
OFSdB REFER→F5 24
OFS STEP REFER→F3 24
O
OVRWR CALC→F5 32
PEAK SEACH MKR→（F5）→F1 34
PEAK SERCH NORM MKR→F4 34
PEAK SERCH ZONE MKR→F5 34
PRE SET SAVE/LOAD→F6 36
P
PROBE MEAS→（F5）→F1 50
ＲＡＴＩＯ ＭＥＡＳ→(Ｆ３)→Ｆ２ 44
ＲＢＷ ＡＬＬ AUTO ＲＢＷ→Ｆ３ 27
ＲＢＷ ＡＵＴＯ ＲＢＷ→Ｆ２ 27
ＲＢＷ ＭＡＮＵＡＬ ＲＢＷ→Ｆ１ 27
ＲＥＦＥＲＥＮＣＥ ＣＮＴＲ ＭＥＡＳ→(Ｆ２)→Ｆ４ 43
R
ＲＥＦＥＲＥＮＣＥ ＷＩＤＴＨ ＭＥＡＳ→(Ｆ２)→Ｆ１→Ｆ５ 43
ＳＡＶＥ ＳＡＶＥ／ＬＯＡＤ→Ｆ１ 36
ＳＣＡＬＥ ２ｄＢ ＳＣＡＬＥ→Ｆ３ 27
ＳＥＴ ＭＫＲ ＦＲＥＱ→Ｆ５ 20
ＳＰＲ. ＦＲ ※2 ＣＡＬＣ→Ｆ６ 32
ＳＷＥＥＰ ＡＵＴＯ ＳＷＥＥＰ→Ｆ２ 29
S
ＳＷＥＥＰ ＭＡＮＵＡＬ ＳＷＥＥＰ→Ｆ１ 29
Ｔ.Ｇ. ＭＯＤＥ ※3 ＳＷＥＥＰ→Ｆ６ 58
ＴＲＩＧ ＳＷＥＥＰ→Ｆ５ 29
T
Ｔｅｎ Ｋｅｙ ＭＯＤＥ ＦＲＥＱ→Ｆ６ 20
U ＵＮＩＴ ＲＥＦＥＲ→Ｆ１～４ 24
ＶＢＷ ＡＬＬ ＡＵＴＯ ＶＢＷ→Ｆ３ 28
ＶＢＷ ＡＵＴＯ ＶＢＷ→Ｆ２ 28
V
ＶＢＷ ＭＡＮＵＡＬ ＶＢＷ→Ｆ１ 28
ZONE PEAK MKR→（F5）→F1 35
Z
ZONE WIDTH MKR→（F5）→F2 35

－ 12 －
5. 2 Menu tree
The following is the sequence of selection for the function menu.
The function menu corresponds to the function key of F1 to F6.
“Function menu”
* Refer to “7. Center Frequency” for details.
* Refer to “8. Frequency Span” for details.
* Refer to “9. Reference Level” for details.
CH POWER
ACP OBW ANT
E/F M/F
PROBE
FREQ
COUNT
F1 F2 F3 F4 F5 F6
FREQ
100MHz 0.02MHz
EncStep SET
MKR
Ten Key
Mode
CENTER FREQ KeyStep
： Set the center frequency
GHz MHz ".” CLEAR
BACK
SPACE RETURN
SPAN
： Set the frequency span
SPAN
1GHz 50MHz
1MHz
SPAN
NORMAL
SPAN
FULL
SPAN
ZERO
REFER
： Set the reference level
dBm
OFSdB
0dB
IMP
50Ω
UNIT
1dB
RL STEP
1dB
OFS STEP
OFF
OFFSET

－ 13 －
* Refer to “10. Display scale” for details.
* Refer to “11. Resolution Bandwidth” for details.
* Refer to “12. Video Bandwidth” for details.
* Refer to “13. Sweep axis / Detection mode” for details.
* T.G. MODE is only for MSA438TG.
SCALE
： Set the display scale
SCALE
10dB/ 5dB/ 2dB/
RBW
： Set the RBW
RBW
MANUAL
AUTO ALL AUTO
VBW
： Set the VBW
VBW
MANUAL
AUTO ALL AUTO
SWEEP
： Set the sweep time
SWEEP
MANUAL
AUTO ALL AUTO
SMPL
DET
INT
TRG
MODE
T.G.
ON
T.G.
ON
NORM

－ 14 －
* Refer to “16. Calculation Function” for details.
* “SPR. FR” is only for MSA458.
* Refer to “17. Marker & Peak Search” for details.
CALC
： Set the number
OVRWR
256
256
MAX HLD
256
MIN HLD
256
AVG
足
りなくなったら
ＮＥＸＴ
MKR
： Move the marker (NORM mode)
： Move the marker (NORM mode)
PEAK
PEAK
NEXT
F5：Zone marker
SEARCH RETURN
： Set the zone center frequency (ZONE mode)
RETURN
ZONE
CENTER
WIDTH
SPR. FR
OFF
F4：Peak search
NORMAL
MODE MARKER PEAKSERCH
DUAL M1 M2 NORMAL ZONE
CONV
dBm→W