4 Series MSO (MSO44, MSO46)
Specifications and Performance Verification
Technical Reference
Warning: The servicing instructions are for use by qualified personnel only. To avoid personal injury, do not perform any servicing unless you are qualified
to do so. Refer to all safety summaries prior to performing service.
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Table of Contents
Table of Contents
List of Figures................................................................................................................................................................................5
List of Tables................................................................................................................................................................................. 6
Important safety information..........................................................................................................................................................7
General safety summary........................................................................................................................................................7
To avoid fire or personal injury........................................................................................................................................7
Probes and test leads..................................................................................................................................................... 9
Service safety summary.........................................................................................................................................................9
Terms in this manual............................................................................................................................................................ 10
Terms on the product........................................................................................................................................................... 10
Symbols on the product....................................................................................................................................................... 10
Specifications.............................................................................................................................................................................. 11
Analog channel input and vertical specification....................................................................................................................11
Trigger system..................................................................................................................................................................... 20
Serial Trigger specifications.................................................................................................................................................22
Digital acquisition system.....................................................................................................................................................23
Digital volt meter (DVM).......................................................................................................................................................23
Trigger frequency counter....................................................................................................................................................23
Arbitrary Function Generator system................................................................................................................................... 23
Display system.....................................................................................................................................................................26
Processor system................................................................................................................................................................ 26
Data storage specifications..................................................................................................................................................28
Power supply system........................................................................................................................................................... 28
Safety characteristics...........................................................................................................................................................28
Mechanical specifications.................................................................................................................................................... 29
Performance verification procedures.......................................................................................................................................... 30
Test records......................................................................................................................................................................... 30
Instrument information, self test record.........................................................................................................................30
Input Impedance test record......................................................................................................................................... 31
DC Gain Accuracy test record...................................................................................................................................... 31
DC Offset Accuracy test record.................................................................................................................................... 34
Analog Bandwidth test record.......................................................................................................................................38
Random Noise High Res acquisition mode test record................................................................................................ 59
Long term sample rate through AFG DC offset accuracy test records......................................................................... 66
Performance tests................................................................................................................................................................74
Prerequisites........................................................................................................................................................................ 74
Self test................................................................................................................................................................................ 75
Check input impedance....................................................................................................................................................... 75
Check DC gain accuracy..................................................................................................................................................... 76
Check DC offset accuracy....................................................................................................................................................79
Check analog bandwidth......................................................................................................................................................80
Check random noise ........................................................................................................................................................... 82
Check long term sample rate............................................................................................................................................... 83
Check digital threshold accuracy......................................................................................................................................... 84
Check AUX Out output voltage levels..................................................................................................................................86
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 3
Table of Contents
Check DVM voltage accuracy (DC)..................................................................................................................................... 87
Check DVM voltage accuracy (AC)..................................................................................................................................... 88
Check trigger frequency accuracy and maximum input frequency...................................................................................... 89
Arbitrary function generator................................................................................................................................................. 89
Check AFG sine and ramp frequency accuracy........................................................................................................... 89
Check AFG square and pulse frequency accuracy.......................................................................................................90
Check AFG signal amplitude accuracy.........................................................................................................................91
Check AFG DC offset accuracy....................................................................................................................................93
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 4
List of Figures
List of Figures
Figure 1: Frequency/period test.................................................................................................................................................. 90
Figure 2: Frequency/period test.................................................................................................................................................. 91
Figure 3: 50 Ω terminator accuracy.............................................................................................................................................92
Figure 4: Amplitude test.............................................................................................................................................................. 92
Figure 5: 50 Ω terminator accuracy.............................................................................................................................................93
Figure 6: DC offset tests..............................................................................................................................................................94
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 5
List of Tables
List of Tables
Table 1: Expected gain worksheet.............................................................................................................................................. 78
Table 2: CF (Calibration Factor) = 1.414 × ((50 / Measurement Ω) + 1).....................................................................................92
Table 3: CF (Calibration Factor) = 0.5 × (( 50 / Measurement Ω) + 1)........................................................................................93
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 6
Important safety information
Important safety information
This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a safe
condition.
To safely perform service on this product, see the Service safety summary that follows the General safety summary.
General safety summary
Use the product only as specified. Review the following safety precautions to avoid injury and prevent damage to this product or any
products connected to it. Carefully read all instructions. Retain these instructions for future reference.
This product shall be used in accordance with local and national codes.
For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to the safety
precautions specified in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or adjustment.
Before use, always check the product with a known source to be sure it is operating correctly.
This product is not intended for detection of hazardous voltages.
Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals
for warnings and cautions related to operating the system.
When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.
To avoid fire or personal injury
Use proper power cord.
Use only the power cord specified for this product and certified for the country of use. Do not use the provided power cord for other
products.
Ground the product.
This product is grounded through the grounding conductor of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly
grounded. Do not disable the power cord grounding connection.
Power disconnect.
The power cord disconnects the product from the power source. See instructions for the location. Do not position the equipment so that it is
difficult to operate the power cord; it must remain accessible to the user at all times to allow for quick disconnection if needed.
Connect and disconnect properly.
Do not connect or disconnect probes or test leads while they are connected to a voltage source.
Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be suitable for the
product.
Observe all terminal ratings .
To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product manual for further ratings information
before making connections to the product.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 7
Important safety information
Do not exceed the Measurement Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product,
probe, or accessory. Use caution when using 1:1 test leads because the probe tip voltage is directly transmitted to the product.
Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.
Do not float the common terminal above the rated voltage for that terminal.
The measurement terminals on this product are not rated for connection to Category III or IV circuits
Do not operate without covers.
Do not operate this product with covers or panels removed, or with the case open. Hazardous voltage exposure is possible.
Avoid exposed circuitry.
Do not touch exposed connections and components when power is present.
Do not operate with suspected failures.
If you suspect that there is damage to this product, have it inspected by qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the product,
turn it off and disconnect the power cord. Clearly mark the product to prevent its further operation.
Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not use probes or
test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing pieces.
Use only specified replacement parts.
Do not operate in wet/damp conditions.
Be aware that condensation may occur if a unit is moved from a cold to a warm environment.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Remove the input signals before you clean the product.
Provide proper ventilation.
Refer to the installation instructions in the manual for details on installing the product so it has proper ventilation.
Slots and openings are provided for ventilation and should never be covered or otherwise obstructed. Do not push objects into any of the
openings.
Provide a safe working environment
Always place the product in a location convenient for viewing the display and indicators.
Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard or pointer use may result in
serious injury.
Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.
Use care when lifting and carrying the product. This product is provided with a handle or handles for lifting and carrying.
Warning:
product.
Warning: The product is heavy. Use a two-person lift or a mechanical aid.
Use only the Tektronix rackmount hardware specified for this product.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 8
The product is heavy. To reduce the risk of personal injury or damage to the device get help when lifting or carrying the
Important safety information
Probes and test leads
Before connecting probes or test leads, connect the power cord from the power connector to a properly grounded power outlet.
Keep fingers behind the protective barrier, protective finger guard, or tactile indicator on the probes. Remove all probes, test leads and
accessories that are not in use.
Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and adapters for
any measurement.
Beware of high voltages.
Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two ratings are important to know and
understand:
• The maximum measurement voltage from the probe tip to the probe reference lead.
• The maximum floating voltage from the probe reference lead to earth ground.
These two voltage ratings depend on the probe and your application. Refer to the Specifications section of the manual for more
information.
Warning: To prevent electrical shock, do not exceed the maximum measurement or maximum floating voltage for the oscilloscope
input BNC connector, probe tip, or probe reference lead.
Connect and disconnect properly.
Connect the probe output to the measurement product before connecting the probe to the circuit under test. Connect the probe reference
lead to the circuit under test before connecting the probe input. Disconnect the probe input and the probe reference lead from the circuit
under test before disconnecting the probe from the measurement product.
De-energize the circuit under test before connecting or disconnecting the current probe.
Connect the probe reference lead to earth ground only.
Do not connect a current probe to any wire that carries voltages or frequencies above the current probe voltage rating.
Inspect the probe and accessories.
Before each use, inspect probe and accessories for damage (cuts, tears, or defects in the probe body, accessories, or cable jacket). Do
not use if damaged.
Ground-referenced oscilloscope use.
Do not float the reference lead of this probe when using with ground-referenced oscilloscopes. The reference lead must be connected to
earth potential (0 V).
Floating measurement use.
Do not float the reference lead of this probe above the rated float voltage.
Service safety summary
The Service safety summary section contains additional information required to safely perform service on the product. Only qualified
personnel should perform service procedures. Read this Service safety summary and the General safety summary before performing any
service procedures.
To avoid electric shock.
Do not touch exposed connections.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 9
Important safety information
Do not service alone.
Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect power.
To avoid electric shock, switch off the product power and disconnect the power cord from the mains power before removing any covers or
panels, or opening the case for servicing.
Use care when servicing with power on.
Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads
before removing protective panels, soldering, or replacing components.
Verify safety after repair.
Always recheck ground continuity and mains dielectric strength after performing a repair.
Terms in this manual
These terms may appear in this manual:
Warning: Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION: Caution statements identify conditions or practices that could result in damage to this product or other property.
Terms on the product
These terms may appear on the product:
• DANGER indicates an injury hazard immediately accessible as you read the marking.
• WARNING indicates an injury hazard not immediately accessible as you read the marking.
• CAUTION indicates a hazard to property including the product.
Symbols on the product
When this symbol is marked on the product, be sure to consult the manual to find out the nature of the potential
hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to
ratings in the manual.)
The following symbols(s) may appear on the product.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 10
Specifications
Specifications
This chapter contains specifications for the instrument. All specifications are guaranteed unless noted as "typical." Typical specifications
are provided for your convenience but are not guaranteed. Specifications that are marked with the symbol are checked in Performance
Verification.
All specifications apply to all models unless noted otherwise. To meet specifications, two conditions must first be met:
• The instrument must have been operating continuously for twenty minutes within the specified operating temperature range.
• You must perform the Signal Path Compensation (SPC) operation described in the Self test on page 75 procedure in Performance
Verification section. If the operating temperature changes by more than 10 °C (18 °F), you must perform the SPC operation again.
Analog channel input and vertical specification
Number of input channels MSO44: 4 BNC
MSO46: 6 BNC
Input coupling DC, AC
Input resistance selection 1 MΩ or 50 Ω
✓Input impedance 1 MΩ DC
coupled
Input capacitance 1 MΩ DC
coupled, typical
✓Input impedance 50 Ω, DC
coupled
Maximum input voltage, 1 MΩ 300 V
Maximum input voltage, 50
Ohm
Number of digitized bits 8 bits at 6.25 GS/s
1 MΩ ±1%
13 pF ±1.5 pF
50 Ω ±1% (VSWR ≤1.5:1, typical)
at the BNC
RMS
Derate at 20 dB/decade between 4.5 MHz and 45 MHz; derate 14 dB/decade between 45 MHz and 450
MHz. Above 450 MHz, 5.5 V
Maximum peak input voltage at the BNC: ±425 V
5 V
, with peaks ≤ ±20 V (DF ≤6.25%)
RMS
12 bits at 3.125 GS/s
13 bits at 1.25 GS/s
14 bits at 625 MS/s
15 bits at 312.5 MS/s
RMS
16 bits at 125 MS/s
Displayed vertically with 25 digitization levels (DL 1) per division, (8-bits only) 10.24 divisions dynamic
range.
1
DL is the abbreviation for digitization level. A DL is the smallest voltage level change that can be resolved by an 8-bit A-D Converter. This value is also known as an
LSB (least significant bit).
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 11
Sensitivity range, coarse
1 MΩ 500 µV/div to 10 V/div in a 1-2-5 sequence
50 Ω 500 µV/div to 1 V/div in a 1-2-5 sequence
Note: 500 μV/div is a 2X digital zoom of 1 mV/div or a 4x digital zoom of 2 mV/div, depending on the instrument
bandwidth configuration
Sensitivity range, fine
Allows continuous adjustment from 1 mV/div to 10 V/div, 1 MΩ and from 1 mV/div to 1 V/div, 50 Ω
1 MΩ 500 µV/div to 10 V/div
50 Ω 500 µV/div to 1 V/div
Sensitivity resolution, fine ≤1% of current setting
✓ DC gain accuracy
Step Gain, 50 Ω ±1.0%, (±2.5% at 1 mV/div and 500 µV/div settings), de-rated at 0.100%/ °C above 30 °C
Step Gain, 1 MΩ ±1.0%, (±2.0% at 1 mV/div and 500 µV/div settings), de-rated at 0.100%/ °C above 30 °C
Variable gain ±1.5%, derated at 0.100%/ °C above 30 °C.
Specifications
Note: 500 μV/div is a 2X digital zoom of 1 mV/div or a 4x digital zoom of 2 mV/div, depending on the instrument bandwidth
configuration. As such, it is guaranteed by testing the nonzoomed setting.
Offset ranges, maximum Input signal cannot exceed maximum input voltage for the 50 Ω input path.
Volts/div Setting Maximum offset range, 50 Ω Input
500 µV/div - 99 mV/div ±1 V
100 mV/div - 1 V/div ±10 V
Volts/div Setting Maximum offset range, 1 MΩ Input
500 µV/div - 63 mV/div ±1 V
64 mV/div - 999 mV/div
1 V/div - 10 V/div ±100 V
Note: 500 μV/div is a 2X digital zoom of 1 mV/div or a 4x digital zoom of 2 mV/div, depending
on the instrument bandwidth configuration. As such, it is guaranteed by testing the nonzoomed
setting.
Position range ±5 divisions
Offset accuracy ±(0.005 X | offset - position | + 0.2 div (0.4 div in 500 μV/div))
±10 V
Number of waveforms for
average acquisition mode
DC voltage measurement
accuracy, Average acquisition
mode
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 12
2 to 10,240 Waveforms, default 16 waveforms
Measurement Type DC Accuracy (In Volts)
Average of ≥ 16 waveforms ±((DC Gain Accuracy) * |reading - (offset - position)|
+ Offset Accuracy + 0.1 * V/div setting)
Table continued…
Measurement Type DC Accuracy (In Volts)
Delta volts between any two averages of ≥ 16
waveforms acquired with the same oscilloscope
setup and ambient conditions
±(DC Gain Accuracy * |reading| + 0.05 div)
Specifications
DC voltage measurement
accuracy, sample acquisition
mode, typical
Bandwidth selections 50 Ω: 20 MHz, 250 MHz, and the full bandwidth value of your model
✓Analog bandwidth 50 Ω DC coupled
1.5 GHz models
1 GHz models
Measurement Type DC Accuracy (In Volts)
Any Sample ±(DC Gain Accuracy * |reading - (offset - position)| +
Offset Accuracy + 0.15 div + 0.6 mV)
Delta Volts between any two samples acquired with
the same scope setup and ambient conditions
1 MΩ: 20 MHz, 250 MHz, 500 MHz
Volts/Div Setting Bandwidth
1 mV/div - 1 V/div DC - 1.50 GHz
500 µV/div - 995 µV/div DC - 250 MHz
Volts/Div Setting Bandwidth
1 mV/div - 1 V/div DC - 1.00 GHz
500 µV/div - 995 µV/div DC - 250 MHz
±(DC Gain Accuracy * |reading| + 0.15 div + 1.2
mV)
500 MHz models
350 MHz models
200 MHz models
Analog bandwidth, 1 MΩ, typical
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 13
Volts/Div Setting Bandwidth
1 mV/div - 1 V/div DC - 500 MHz
500 µV/div - 995 µV/div DC - 250 MHz
Volts/Div Setting Bandwidth
1 mV/div - 1 V/div DC - 350 MHz
500 µV/div - 995 µV/div DC - 250 MHz
Volts/Div Setting Bandwidth
1 mV/div - 1 V/div DC - 200 MHz
500 µV/div - 995 µV/div DC - 200 MHz
Specifications
All model bandwidths
except 350 MHz, 200 MHz
350 MHz models
200 MHz models
Analog bandwidth with
TPP0500, TPP1000 and
TPP0250 probes, typical
The limits stated above are for ambient temperature of ≤30 °C and the bandwidth selection set to FULL.
Reduce the upper bandwidth frequency by 1% for each °C above 30 °C.
Volts/Div Setting Bandwidth
1 mV/div - 10 V/div DC - 500 MHz
500 µV/div - 995 µV/div DC - 250 MHz
Volts/Div Setting Bandwidth
1 mV/div - 10 V/div DC - 350 MHz
500 µV/div - 995 µV/div DC - 250 MHz
Volts/Div Setting Bandwidth
1 mV/div - 10 V/div DC - 200 MHz
500 µV/div - 995 µV/div DC - 200 MHz
The limits are for ambient temperature of ≤30 °C and the bandwidth selection set to FULL. Reduce the
upper bandwidth frequency by 1% for each °C above 30 °C.
Instrument Volts/Div Setting Bandwidth
1.5 GHz, 1 GHz 5 mV/div - 100 V/div DC - 1 GHz (TPP1000 Probe)
500 MHz 5 mV/div - 100 V/div DC - 500 MHz (TPP0500 Probe)
350 MHz 5 mV/div - 100 V/div DC - 350 MHz (TPP0500 Probe)
200 MHz 5 mV/div - 100 V/div DC - 200 MHz (TPP0250 Probe)
Lower frequency limit, AC
coupled, typical
Upper frequency limit, 250 MHz
bandwidth limited, typical
Upper frequency limit, 20 MHz
bandwidth limited, typical
Calculated rise time, typical
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 14
<10 Hz when AC 1 MΩ coupled. The AC coupled lower frequency limits are reduced by a factor of 10 (<1
Hz) when 10X passive probes are used.
250 MHz, ± 25%
20 MHz, ± 25 %
Model 50 Ω TP1000 Probe TPP0500 Probe TPP0250 Probe
500 µV-1 V 5 mV-10 V 5 mV-10 V 5 mV-10 V
1.5 GHz 333ps 450ps 900ps 1.8ns
1 GHz 450ps 450ps 900ps 1.8ns
500 MHz 900ps 900ps 900ps 1.8ns
350 MHz 1.3ns 1.3ns 1.3ns 1.8ns
200 MHz 2.3ns 2.3ns 2.3ns 2.3ns
Specifications
Peak Detect or Envelope mode
pulse response, typical
Effective bits (ENOB), typical
Typical effective bits for a 9-division p-p sine-wave input, 50 mV/div, 50-ohm
Sample mode, 50 Ω, 50
mV/div
Minimum pulse width is >640 ps (6.25 GS/s)
Bandwidth Input frequency ENOB at 6.25 GS/s
1.5 GHz 10 MHz 6.80
1.5 GHz 300 MHz 6.80
1 GHz 10 MHz 7.10
1 GHz 300 MHz 7.10
500 MHz 10 MHz 7.40
500 MHz 150 MHz 7.40
350 MHz 10 MHz 7.60
350 MHz 100 MHz 7.60
250 MHz 10 MHz 7.60
250 MHz 100 MHz 7.60
200 MHz 10 MHz 7.60
200 MHz 100 MHz 7.60
20 MHz 10 MHz 7.70
High Res mode, 50 Ω, 50
mV/div
Random noise, Sample and High Res Acquisition modes, 50 Ω and 1 MΩ, 6.25 Gs/s
Bandwidth Input frequency ENOB at 6.25 GS/s
1.5 GHz 10 MHz 7.10
1.5 GHz 300 MHz 7.10
1 GHz 10 MHz 7.60
1 GHz 300 MHz 7.60
500 MHz 10 MHz 7.90
500 MHz 150 MHz 7.90
350 MHz 10 MHz 8.20
350 MHz 100 MHz 8.20
250 MHz 10 MHz 8.20
250 MHz 100 MHz 8.20
200 MHz 10 MHz 8.20
200 MHz 100 MHz 8.20
20 MHz 10 MHz 8.90
✓1.5 GHz models, Sample
mode (RMS), 50 Ω
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 15
V/div 1.5 GHz
1 mV/div 635 μV
2 mV/div 635 μV
5 mV/div 817 μV
10 mV/div 843 μV
20 mV/div 920 μV
50 mV/div 1.582 mV
100 mV/div 3.686 mV
1 V/div 23.753 mV
Specifications
All models, Sample mode
(RMS), 50 Ω, typical
✓All models except 1.5
GHz, High Res mode
(RMS), 50 Ω
V/div 1.5 GHz 1 GHz 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 490 μV 300 μV 220 μV 145 μV 120 μV 80 μV
2 mV/div 490 μV 350 μV 220 μV 150 μV 130 μV 80 μV
5 mV/div 630 μV 380 μV 230 μV 175 μV 160 μV 110 μV
10 mV/div 650 μV 400 μV 280 μV 220 μV 215 μV 155 μV
20 mV/div 710 μV 510 μV 410 μV 340 μV 340 μV 260 μV
50 mV/div 1.220 mV 980 μV 890 μV 760 μV 760 μV 630 μV
100 mV/div 2.84 mV 2.23 mV 1.93 mV 1.61 mV 1.61 mV 1.25 mV
1 V/div 18.3 mV 19.0 mV 17.3 mV 15.0 mV 15.0 mV 12.5 mV
V/div 1 GHz 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 336 μV 259 μV 194 μV 161 μV 96 μV
2 mV/div 363 μV 259 μV 194 μV 161 μV 96 μV
5 mV/div 394 μV 304 μV 239 μV 174 μV 96 μV
10 mV/div 434 μV 356 μV 284 μV 206 μV 103 μV
20 mV/div 551 μV 466 μV 349 μV 298 μV 141 μV
50 mV/div 1.038 mV 1.038 mV 739 μV 596 μV 259 μV
100 mV/div 2.102 mV 1.596 mV 1.349 mV 1.349 mV 609 μV
1 V/div 16.874 mV 12.850mV 11.617 mV 11.617 mV 4.906 mV
All models except 1.5 GHz,
High Res mode (RMS), 50
Ω, typical
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 16
Specifications
V/div 1 GHz 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 260 μV 200 μV 150 μV 125 μV 75 μV
2 mV/div 280 μV 200 μV 150 μV 125 μV 75 μV
5 mV/div 305 μV 235 μV 185 μV 135 μV 75 μV
10 mV/div 335 μV 275 μV 220 μV 160 μV 80 μV
20 mV/div 425 μV 360 μV 270 μV 230 μV 110 μV
50 mV/div 800 μV 800 μV 570 μV 460 μV 200 μV
100 mV/div 1.62 mV 1.23 mV 1.04 mV 1.04 mV 470 μV
1 V/div 13.00 mV 9.90 mV 8.95 mV 8.95 mV 3.78 mV
All models, Sample mode
(RMS), 1 MΩ, typical
All models, High Res mode
(RMS), 1 MΩ, typical
V/div 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 210 μV 140 μV 120 μV 78 μV
2 mV/div 210 μV 140 μV 120 μV 78 μV
5 mV/div 230 μV 160 μV 135 μV 96 μV
10 mV/div 270 μV 200 μV 190 μV 135 μV
20 mV/div 370 μV 300 μV 300 μV 240 μV
50 mV/div 760 μV 600 μV 650 μV 750 μV
100 mV/div 1.75 mV 1.350 mV 1.45 mV 1.22 mV
1 V/div 19.00 mV 15.25 mV 15.70 mV 11.20 mV
V/div 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 200 μV 140 μV 120 μV 75 μV
2 mV/div 200 μV 140 μV 120 μV 75 μV
5 mV/div 210 μV 150 μV 130 μV 75 μV
10 mV/div 230 μV 160 μV 150 μV 80 μV
20 mV/div 280 μV 200 μV 200 μV 100 μV
50 mV/div 520 μV 370 μV 410 μV 180 μV
100 mV/div 1.24 mV 880 μV 930 μV 460 μV
1 V/div 14.30 mV 10.20 mV 10.30 mV 5.45 mV
✓All models, High Res
mode (RMS), 1 MΩ
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 17
Specifications
V/div 500 MHz 350 MHz 250/200 MHz 20 MHz
1 mV/div 259 μV 181 μV 155 μV 96 μV
2 mV/div 259 μV 181 μV 155 μV 96 μV
5 mV/div 271 μV 194 μV 168 μV 96 μV
10 mV/div 298 μV 206 μV 194 μV 103 μV
20 mV/div 363 μV 259 μV 259 μV 129 μV
50 mV/div 674 μV 479 μV 531 μV 233 μV
100 mV/div 1.609 mV 1.141 mV 1.206 mV 596 μV
1 V/div 18.561 mV 13.239 mV 13.369 mV 7.074 mV
Delay between analog
channels, full bandwidth,
typical
Deskew range -125 ns to +125 ns with a resolution of 40 ps
Crosstalk (channel isolation),
typical
Total probe power TekVPI+ Compliant probe interfaces: (4 per MSO44, 6 per MSO46) and 1 TekVPI interface for Aux In
Probe power per channel
TekVPI interconnect All analog channel inputs on the front panel conform to the TEKVPI specification.
≤ 100 ps for any two channels with input impedance set to 50 Ω, DC coupling with equal Volts/div or above
10 mV/div
≥ 200:1 up to the rated bandwidth for any two channels having equal Volts/div settings
MSO46: 80 W maximum (40 W maximum for channels 1-3, 40 W maximum for channels 4-6 and Aux In)
MSO44: 80 W maximum (40 W maximum for channels 1-3, 40 W maximum for channel 4 and Aux In)
Voltage Max Amperage Voltage Tolerance
5 V 60 mA ±10%
12 V 1.67 A (20 W maximum software
limit)
±10%
Timebase system
Sample rate
Interpolated waveform rate
range
Record length range
Standard 1 kpoints to 31.25 Mpoints in single sample increments
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 18
Max HW Capability Number of Channels
6.25 GS/s 1-6
500 GS/sec, 250 GS/sec, 125 GS/sec, 62.5 GS/sec, 25 GS/sec, and 12.5 GS/sec
Optional 62.5 Mpoints
Specifications
Seconds/Division range
Maximum triggered acquisition
rate, typical
Aperture uncertainty
✓Timebase accuracy
Model 1 K 10 K 100 K 1 M 10 M 31.25 M 62.5 M
MSO4X Standard
200 ps - 64 s 200 ps - 640 s 200 ps - 1000 s N/A
31.25 M
MSO4X Option
200 ps - 64 s 200 ps - 640 s 200 ps - 1000 s
62.5 M
Analog or digital channels: single channel [Analog or Digital 8-bit channel] on screen, measurements and
math turned off. >20 wfm/sec
FastAcq Update Rate (analog only): >500 K/second with one channel active and >100 K/second with all
channels active.
Digital channel: >20/second with one channel (8-bits) active. There is no FastAcq for digital channels, but
they do not slow down FastAcq for active analog channels.
≤ 0.450 ps + (10
-11
* Measurement Duration)
, for measurements having duration ≤ 100 ms
RMS
±2.5 x 10-6 over any ≥1 ms time interval
Description Specification
Factory Tolerance
±5.0 x10
-7
At calibration, 25 °C ambient, over any ≥1 ms interval
Delta-time measurement
accuracy, nominal
Temperature stability,
typical
Crystal aging
±5.0 x10
Tested at operating temperatures
±1.5 x 10
-7
-6
Frequency tolerance change at 25 °C over a period of 1 year
The formulas to calculate the peak-to-peak or rms nominal delta-time measurement accuracy (DTA) for a
given instrument setting and input signal is as follows (assumes insignificant signal content above Nyquist
frequency):
Where:
N = input-referred guaranteed noise limit (V
RMS
)
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 19
Trigger system
Specifications
SR 1 = Slew Rate (1st Edge) around 1st point in measurement
SR 2 = Slew Rate (2nd Edge) around 2nd point in measurement
t p = delta-time measurement duration (sec)
TBA = timebase accuracy or Reference Frequency Error ±0.5 ppm
(Assumes insignificant error due to aliasing or over-drive.)
The term under the square root sign is the stability and is due to TIE (Time Interval Error). The errors due
to this term occur throughout a single-shot measurement. The second term is due to both the absolute
center-frequency accuracy and the center-frequency stability of the timebase and varies between multiple
single-shot measurements over the observation interval (the amount of time from the first single-shot
measurement to the final single-shot measurement).
Note: The formulas assume negligible errors due to measurement interpolation, and apply only
when the interpolated sample rate is 25 GS/s or higher.
Trigger bandwidth (edge,
pulse, and logic), typical
Edge-type trigger sensitivity,
DC coupled, typical
Trigger jitter, typical ≤ 7 ps
1.5 GHz models, Edge 1.5 GHz
1.5 GHz models, Pulse and Logic 1 GHz
1 GHz models 1 GHz
500 MHz models 500 MHz
350 MHz models 350 MHz
200 MHz models 200 MHz
Path Range Specification
1 MΩ path (all
models)
50 Ω path, all
models
Line Fixed
RMS
0.5 mV/div to
0.99 mV/div
≥ 1 mV/div The greater of 5 mV or 0.7 div
4.5 div from DC to instrument bandwidth
The greater of 5.6 mV or 0.7 div from DC to the lesser of
500 MHz or instrument BW, & 7 mV or 0.8 div from > 500 MHz to
instrument bandwidth
Edge-type trigger sensitivity,
not DC coupled, typical
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 20
Trigger Coupling Typical Sensitivity
NOISE REJ 2.5 times the DC Coupled limits
HF REJ 1.0 times the DC Coupled limits from DC to 50 kHz. Attenuates signals above
50 kHz.
LF REJ 1.5 times the DC Coupled limits for frequencies above 50 kHz. Attenuates
signals below 50 kHz.
Specifications
Logic-type triggering,
minimum logic or rearm time,
typical
Minimum clock pulse widths
for setup/hold time violation
trigger, typical
Setup/hold violation trigger,
setup and hold time ranges,
typical
Triggering type Pulse width Rearm time Time skew needed for 100%
2
4
Logic 160 ps + t
Time qualified logic 320 ps + t
t
is rise time of the instrument.
rise
Minimum pulsewidth, clock active
320 ps + t
t
rise
rise
is rise time of the instrument.
rise
rise
and no triggering
160 ps + t
320 ps + t
3
rise
rise
Minimum pulsewidth, clock inactive
320 ps +t
rise
>360 ps / <150 ps
>360 ps / <150 ps
Feature Min Max
Setup Time 0 ns 20 s
Hold Time 0 ns 20 s
Setup + Hold Time 320 ps 22 s
Input coupling on clock and data channels must be the same.
Pulse type trigger, minimum
pulse, rearm time, transition
time
For Setup Time, positive numbers mean a data transition before the clock.
For Hold Time, positive numbers mean a data transition after the clock edge.
Setup + Hold Time is the algebraic sum of the Setup Time and the Hold Time programmed by the user.
Pulse class Minimum pulse width Minimum rearm time
Runt 160 ps + t
Time-Qualified Runt 160 ps + t
Width 160 ps + t
Slew Rate (minimum transition
160 ps + t
rise
rise
rise
rise
160 ps + t
160 ps + t
160 ps + t
160 ps + t
rise
rise
rise
rise
time)
For trigger class width, pulse width refers to the width of the pulse being measured. Rearm time refers to the
time between pulses.
For trigger class runt, pulse width refers to the width of the pulse being measured. Rearm time refers to the
time between pulses.
For trigger class slew rate, pulse width refers to the delta time being measured. Rearm time refers to the
time it takes the signal to cross the two trigger thresholds again.
t
is rise time of the instrument.
rise
2
For Logic, time between channels refers to the length of time a logic state derived from more than one channel must exist to be recognized. For Events, the time is
the minimum time between a main and delayed event that will be recognized if more than one channel is used.
3
Active pulsewidth is the width of the clock pulse from its active edge (as defined in the Clock Edge menu item) to its inactive edge.
4
Inactive pulsewidth is the width of the pulse from its inactive edge to its active edge.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 21
Specifications
Active pulsewidth is the width of the clock pulse from its active edge (as defined in the Clock Edge menu
item) to its inactive edge
Inactive pulsewidth is the width of the pulse from its inactive edge to its active edge.
Transition time trigger, delta
time range
Time range for glitch, pulse
width, timeout, time-qualified
runt, or time-qualified window
triggering
Time accuracy for pulse,
glitch, timeout, or width
triggering
B trigger after events,
minimum pulse width and
maximum event frequency,
typical
B trigger, minimum time
between arm and trigger,
typical
160 ps to 20 s.
160 ps to 20 s.
Time Range Accuracy
1 ns to 500 ns ±(160 ps +Time Base Error * Setting).
520 ns to 1 s ±(160 ps +Time Base Error * Setting).
Minimum pulse width: 160 ps + t
Maximum event frequency: Instrument bandwidth.
t
is rise time of the instrument.
rise
320 ps
For trigger after time, this is the time between the end of the time period and the B trigger event.
For trigger after events, this is the time between the last A trigger event and the first B trigger event.
rise
B trigger after time, time range 160 ps to 20 seconds
B trigger after events, event
range
Trigger level ranges
Trigger holdoff range 0 ns to 20 seconds
1 to 65,471
Source Range
Any Channel ±5 divs from center of screen
Aux In Trigger, typical ±8 V
Line Fixed at about 50% of line voltage
This specification applies to logic and pulse thresholds.
Serial Trigger specifications
Maximum serial trigger bits 128 bits
Optional serial bus interface
triggering
Please refer to the Serial Triggering and Analysis 3 Series MDO, 4/5/6 Series MSO Applications Datasheet
(part number 61W-61101-x), located on the Tektronix Web site, for information on available serial triggering
options and their triggering capabilities.
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 22
Digital acquisition system
Specifications
Digital channel maximum
sample rate
Transition detect (digital peak
detect)
Digital-To-Analog trigger skew 3 ns
Digital to digital skew 3 ns from bit 0 of any TekVPI channel to bit 0 of any TekVPI channel.
Digital skew within a
FlexChannel
6.25 GS/s
Displayed data at sample rates less than 6.25 GS/s (decimated data), that contains multiple transitions
between sample points will be displayed with a bright white colored edge.
160 ps within any TekVPI channel
Digital volt meter (DVM)
Measurement types DC, AC
Voltage resolution 4 digits
✓Voltage accuracy
DC: ±((1.5% * |reading - offset - position|) + (0.5% * |(offset - position)|) + (0.1 * Volts/div))
De-rated at 0.100%/°C of |reading - offset - position| above 30 °C
Signal ± 5 divisions from screen center
RMS
+DC, AC
RMS
AC: ± 2% (40 Hz to 1 kHz) with no harmonic content outside 40 Hz to 1 kHz range
AC, typical: ± 2% (20 Hz to 10 kHz)
For AC measurements, the input channel vertical settings must allow the VPP input signal to cover between 4
and 10 divisions and must be fully visible on the screen
Trigger frequency counter
✓Accuracy ±(1 count + time base accuracy * input frequency)
The signal must be at least 8 mVpp or 2 div, whichever is greater.
✓ Maximum input frequency 10 Hz to maximum bandwidth of the analog channel
The signal must be at least 8 mVpp or 2 div, whichever is greater.
Resolution 8-digits
Arbitrary Function Generator system
Function types Arbitrary, sine, square, pulse, ramp, triangle, DC level, Gaussian, Lorentz, exponential rise/fall, sin(x)/x,
random noise, Haversine, Cardiac
Amplitude range Values are peak-to-peak voltages
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 23
Waveform 50 Ω 1 MΩ
Arbitrary 10 mV to 2.5 V 20 mV to 5 V
Sine 10 mV to 2.5 V 20 mV to 5 V
Square 10 mV to 2.5 V 20 mV to 5 V
Pulse 10 mV to 2.5 V 20 mV to 5 V
Ramp 10 mV to 2.5 V 20 mV to 5 V
Triangle 10 mV to 2.5 V 20 mV to 5 V
Gaussian 10 mV to 1.25 V 20 mV to 2.5 V
Lorentz 10 mV to 1.2 V 20 mV to 2.4 V
Exponential Rise 10 mV to 1.25 V 20 mV to 2.5 V
Exponential Fall 10 mV to 1.25 V 20 mV to 2.5 V
Sine(x)/x 10 mV to 1.5 V 20 mV to 3.0 V
Random Noise 10 mV to 2.5 V 20 mV to 5 V
Haversine 10 mV to 1.25 V 20 mV to 2.5 V
Cardiac 10 mV to 2.5 V 20 mV to 5 V
Specifications
Maximum sample rate 250 MS/s
Arbitrary function record
length
Sine waveform
Frequency range 0.1 Hz to 50 MHz
Frequency setting
resolution
Frequency accuracy 130 ppm (frequency ≤ 10 kHz), 50 ppm (frequency > 10 kHz)
Amplitude range 20 mVpp to 5 Vpp into Hi-Z; 10 mVpp to 2.5 Vpp into 50 Ω
Amplitude flatness, typical ±0.5 dB at 1 kHz
Total harmonic distortion,
typical
Spurious free dynamic
range, typical
128 K Samples
0.1 Hz
This is for Sine, Ramp, Square and Pulse waveforms only.
±1.5 dB at 1 kHz for < 20 mVpp amplitudes
1% for amplitude ≥ 200 mVpp into 50 Ω load
2.5% for amplitude > 50 mV AND < 200 mVpp into 50 Ω load
This is for Sine wave only.
40 dB (Vpp ≥ 0.1 V); 30 dB (Vpp ≥ 0.02 V), 50 Ω load
Square and pulse waveform
Frequency range 0.1 Hz to 25 MHz
Frequency setting
resolution
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 24
0.1 Hz
Duty cycle range 10% - 90% or 10 ns minimum pulse, whichever is larger
Minimum pulse time applies to both on and off time, so maximum duty cycle will reduce at higher frequencies
to maintain 10 ns off time
Duty cycle resolution 0.1%
Minimum pulse width,
10 ns. This is the minimum time for either on or off duration.
typical
Rise/Fall time, typical 5.5 ns, 10% - 90%
Pulse width resolution 100 ps
Overshoot, typical < 4 % for signal steps greater than 100 mV
pp
This applies to overshoot of the positive-going transition (+overshoot) and of the negative-going (-overshoot)
transition
Asymmetry, typical ±1% ±5 ns, at 50% duty cycle
Jitter, typical < 60 ps TIE
, ≥ 100 mVpp amplitude, 40%-60% duty cycle
RMS
Ramp and triangle waveform
Frequency range 0.1 Hz to 500 kHz
Frequency setting
0.1 Hz
resolution
Variable symmetry 0% - 100%
Symmetry resolution 0.1%
Specifications
DC level range ±2.5 V into Hi-Z
±1.25 V into 50 Ω
Gaussian pulse, Haversine, and Lorentz pulse
Maximum frequency 5 MHz
Exponential rise fall maximum
5 MHz
frequency
Sin(x)/x
Maximum frequency 2 MHz
Random noise amplitude
range
20 mVpp to 5 Vpp into Hi-Z
10 mVpp to 2.5 Vpp into 50 Ω
For both isolated noise signal and additive noise signal.
✓Sine and ramp frequency
1.3 x 10-4 (frequency ≤10 kHz)
accuracy
5.0 x 10-5 (frequency >10 kHz)
✓Square and pulse frequency
1.3 x 10-4 (frequency ≤10 KHz);
accuracy
5.0 x 10-5 (frequency >10 KHz)
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 25
Specifications
Signal amplitude resolution 1 mV (Hi-Z)
500 μV (50 Ω)
✓Signal amplitude accuracy ±[ (1.5% of peak-to-peak amplitude setting) + (1.5% of absolute DC offset setting) + 1 mV ] (frequency = 1
kHz)
DC offset range ±2.5 V into Hi-Z
±1.25 V into 50 Ω
DC offset resolution 1 mV (Hi-Z)
500 μV (50 Ω)
✓DC offset accuracy ±[ (1.5% of absolute offset voltage setting) + 1 mV ]
Add 3 mV of uncertainty per 10 °C change from 25 °C ambient. Refer DC Offset Accuracy test
record on page 34
Display system
Display type Display area - 11.38 inches (289 mm) (H) x 6.5 inches (165 mm) (V), 13.3 inches (338 mm) diagonal, 6-bit
RGB color, (1920 X 1080) TFT liquid crystal display (LCD) with capacitive touch
Resolution 1,920 horizontal × 1,080 vertical pixels
Luminance, typical
400 cd/m2, (Minimum: 320 cd/m2 )
Display luminance is specified for a new display set at full brightness.
Processor system
Host processor Texas Instruments AM5728
Operating system Closed Linux
Input_Output port specifications
Ethernet interface An 8-pin RJ-45 connector that supports 10/100/1000 Mb/s
Video signal output A 29-pin HDMI connector
Recommended resolution: 1920 x 1080 @ 60 Hz. Note that video out may not be hot pluggable. HDMI
cable may need to be attached before power up for dual display functions to work depending upon the
instrument firmware revision
USB interface (Host, Device
ports)
Front panel USB Host ports: Three USB 2.0 Hi-Speed ports
Rear panel USB Host ports: Two USB 2.0 Hi-Speed ports
Rear panel USB Device port: One USB 2.0 Hi-Speed Device port providing USBTMC support
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 26
Specifications
Probe compensator signal
output voltage and frequency,
typical
Characteristic Value
Output Voltage Default: 0-2.5 V amplitude
Impedance 1 kΩ
Frequency 1 kHz
Auxiliary output, AUX OUT, Trigger Out, Event, or Reference Clock Out
Selectable output Acquisition Trigger Out
Reference Clock Out
AFG Trigger Out
Acquisition Trigger Out User selectable transition from HIGH to LOW, or LOW to HIGH, indicates the trigger occurred. The signal
returns to its previous state after approximately 100 ns
Acquisition trigger jitter 380 ps (peak-to-peak)
Reference Clock Out Reference clock output tracks the acquisition system and can be referenced from either the internal clock
reference or the external clock reference
AFG Trigger Out The output frequency is dependent on the frequency of the AFG signal as shown in the following table:
AFG signal frequency AFT trigger frequency
≤ 4.9 MHz Signal frequency
> 4.9 MHz to 14.7 MHz Signal frequency / 3
> 14.7 MHz to 24.5 MHz Signal frequency / 5
> 24.5 MHz to 34.3 MHz Signal frequency / 7
> 34.3 MHz to 44.1 MHz Signal frequency / 9
> 44.1 MHz to 50 MHz Signal frequency / 11
AUX OUT Output Voltage
Characteristic Limits
Vout (HI) ≥ 2.5 V open circuit; ≥ 1.0 V into a 50 Ω load to ground
Vout (LO) ≤ 0.7 V into a load of ≤ 4 mA; ≤0.25 V into a 50 Ω load to ground
External reference input
Nominal input frequency 10 MHz
Frequency Variation
9.99996 MHz to 10.00004 MHz (±4.0 x 10-6)
Tolerance
Sensitivity, typical Vin 1.5 V
Maximum input signal 7 V
using a 50 Ω termination
p-p
pp
Impedance 1.2 K Ohms ±20% in parallel with 18 pf ±5 pf at 10 MHz
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 27
Data storage specifications
Specifications
Nonvolatile memory retention
time, typical
Real-time clock A programmable clock providing time in years, months, days, hours, minutes, and seconds.
Nonvolatile memory capacity
32 GB Primary MMC Stores the operating system, application software and factory data. No user data
32 GB Secondary MMC Stores saved setups and waveforms, Ethernet settings, log files, user data and user settings
2 Kbit EEPROM Memory on the main board that stores the instrument serial number, instrument start up count, total uptime
1 Kbit EEPROM Memory on the main board that stores power management controller factory data
1 KB Flash Memory Memory on the main board that stores the SODIMM memory configuration data (SPD). Two to four pieces
32 KB Flash Memory Memory on the main board that stores microcontroller firmware. Two pieces
64 KB Flash Memory Memory on the main board that stores microcontroller firmware. Two pieces
No time limit for front panel settings, saved waveforms, setups, product licensing, and calibration constants.
factory data, security option passwords, and user-settable security option passwords
depending on model
Power supply system
Power
Power consumption 400 Watts maximum
Source voltage 100 - 240 V ±10% (50 Hz to 60 Hz)
Source frequency 50 Hz to 60 Hz ±10%, at 100 - 240 V ±10%
400 Hz at 115 V ±10%
Fuse Rating 12.5 A, 250 V
ac
Safety characteristics
Safety certification US NRTL Listed - UL61010-1 and UL61010-2-030
Canadian Certification - CAN/CSA-C22.2 No. 61010.1 and CAN/CSA-C22.2 No 61010.2.030
EU Compliance - Low Voltage Directive 2014-35-EU and EN61010-1.
International Compliance - IEC 61010-1 and IEC61010-2-030
Pollution degree Pollution degree 2, indoor, dry location use only
Environmental specifications
Temperature
Operating +0 °C to +50 °C (32 °F to 122 °F)
Non-operating -30 °C to +70 °C (-22 °F to 158 °F)
Humidity
Operating 5% to 90% relative humidity (% RH) at up to +40 °C
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 28
5% to 50% RH above +40 °C up to +50 °C, noncondensing, and as limited by a maximum wet-bulb
temperature of +39 °C
Non-operating 5% to 90% relative humidity (% RH) at up to +40 °C
5% to 50% RH above +40 °C up to +50 °C, noncondensing, and as limited by a maximum wet-bulb
temperature of +39 °C
Altitude
Operating Up to 3,000 meters (9,843 feet)
Non-operating Up to 12,000 meters (39,370 feet)
Mechanical specifications
Dimensions Height: 9.8 in (249 mm), feet folded in, handle to back
Height: 13.8 in (351 mm) feet folded in, handle up
Width: 15.9 in (405 mm) from handle hub to handle hub
Depth: 6.1 in (155 mm) from back of feet to front of knobs, handle up
Specifications
Depth: 10.4 in (265 mm) feet folded in, handle to the back
Weight < 16.8 lbs (7.6 kg)
Cooling The clearance requirement for adequate cooling is 2.0 in (50.8 mm) on the right side of the instrument
(when viewed from the front) and on the rear of the instrument
4 Series MSO (MSO44, MSO46) Specifications and Performance Verification Technical Reference 29
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