Tektronix TBS1000C Series Use and care manual

TBS1000C Series Oscilloscopes
Series Digital Storage Oscilloscope
Technical Reference
*P077158300*
077-1583-00

TBS1000C Series Oscilloscopes
Series Digital Storage Oscilloscope
Technical Reference
www.tek.com
077-1583-00
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.
Supports ABC Product Firmware V1.0 and above (where ABC is
abbreviated product name)

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are
protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued
and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges
reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
■In North America, call 1-800-833-9200.
■Worldwide, visit www.tek.com to find contacts in your area.

Table of Contents
Important safety information ................................................................................................................................ iii
General safety summary ................................................................................................................................ iii
Service safety summary ................................................................................................................................. v
Terms in the manual ...................................................................................................................................... vi
Terms on the product .................................................................................................................................... vi
Symbols on the product ................................................................................................................................. vi
Specifications
Model overview .............................................................................................................................................. 1
Vertical system - analog channels ................................................................................................................. 1
Horizontal systems - analog channel ............................................................................................................. 2
Signal acquisition system characteristics ....................................................................................................... 2
Waveform measurements .............................................................................................................................. 5
Time Base System ......................................................................................................................................... 5
Waveform Math .............................................................................................................................................. 6
Triggering system ........................................................................................................................................... 6
Display specifications ................................................................................................................................... 10
Interfaces and output ports specifications .................................................................................................... 10
Data handling characteristics ....................................................................................................................... 10
Power distribution system ............................................................................................................................ 11
Mechanical characteristics .......................................................................................................................... 11
Environmental performance ......................................................................................................................... 12
Performance verification
Required equipment ..................................................................................................................................... 13
Test record ................................................................................................................................................... 14
Performance verification procedures ........................................................................................................... 15
Self test .................................................................................................................................................. 15
Signal calibration .................................................................................................................................... 15
Check DC gain accuracy ........................................................................................................................ 15
Check bandwidth .................................................................................................................................... 16
Check sample rate accuracy and delay time accuracy .......................................................................... 17
Check edge trigger sensitivity ................................................................................................................ 19
Check Aux In edge trigger sensitivity ..................................................................................................... 20
Check Vertical Position Accuracy ........................................................................................................... 22
Data verification ...................................................................................................................................... 24
TBS1000C Series Specification and Performance Verification i

Example off vertical position accuracy test spreadsheet
Sample Filled-In Vertical Position Accuracy ................................................................................................. 25
Table of Contents
ii TBS1000C Series Specification and Performance Verification

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.
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.
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).
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. 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.
TBS1000C Series Specification and Performance Verification iii

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.
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.
Important safety information
iv TBS1000C Series Specification and Performance Verification

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.
Connect and disconnect properly. 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.
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.
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.
Important safety information
TBS1000C Series Specification and Performance Verification v

Terms in the 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 may appear on the product:
Important safety information
vi TBS1000C Series Specification and Performance Verification

Specifications
Model overview
Model overview TBS1052C TBS1072C TBS1102C TBS1202C
Bandwidth 50 MHz 70 MHz 100 MHz 200 MHz
Channels 2 2 2 2
Sample Rate 1 GS/s 1 GS/s 1 GS/s 1 GS/s
Record Length 20K points 20K points 20K points 20K points
Vertical system - analog channels
Vertical resolution 8 bits
Input sensitivity range 1 mV/Div to 10V/Div in 1-2-5 sequence with probe attenuation set to 1X
Maximum input voltage 300 V RMS, Installation Category II; derate above 4 MHz at 20dB per decade to 200 MHz
Vertical offset range 1 mV/div to 50 mV/div: +/- 1V
100 mV/div to 500 mV/div: +/- 10 V
1 V/div to 5 V/div: +/- 100 V
Bandwidth limit 20 MHz (Typ)
Input coupling DC or AC
Input resistance, DC coupled 1 MΩ, ±2 %
Input capacitance, DC coupled 14pF ± 2 pF
Vertical zoom Vertically expand or compress a live or a stopped waveform
Acquisition modes Sample Acquire sampled values
Peak Detect Captures glitches as narrow as 3.5 ns at all
sweep speeds.
Average From 2 to 512 waveforms included in average.
Hi-Res Averages multiple sample of one acquisition
interval into one waveform point.
Roll Scrolls waveforms right to left across the screen
at sweep speeds slower than or equal to 40 ms/
div
TBS1000C Series Specification and Performance Verification 1

Horizontal systems - analog channel
Deskew range +/- 100 ns with 1ns resolution
Horizontal zoom Horizontally expand or compress a live or a stopped waveform
Timebase accuracy 50 ppm
Seconds\Division range 2 ns/div to 100 sec/div in a 1-2-4 sequence.
Signal acquisition system characteristics
No of input channels Two
Input coupling DC or AC
AC coupling connects a capacitor in series with the input circuitry. The DC input impedance
becomes very high, since capacitance is in series with all paths to ground.
Input impedance, DC coupled 1 MΩ, ±2 %
Input capacitance, DC coupled 14pF ± 2pF
Maximum input voltage A300 V RMS, CAT II; derate above 4 MHz at 20 dB per decade to 200 MHz
Number of digitized bits 8 bits
Sensitivity range 1 mV/div to 10V/div in 1-2-5 sequence with probe attenuation set to 1X.
Probe scale factors 1X, 10X, 20X, 50X, 100X, 500X, 1000X voltage attenuation.
5, 1, 500 m, 200 m, 100 m, 20 m, 10 m, 1 m V/A current scale factor.
This adjusts the display scale factor of the instrument to accommodate various probe types.
Accuracy of the probe used must be added to the accuracy specifications of instrument.
No automatic probe interface is provided, so you must verify that the settings match the probe
characteristics. The probe check function allows setting of the proper attenuation for voltage
probes.
Acquisition modes Sample, Peak detect, Average
Retained front panel settings Front panel settings are retained when the instrument power is turned off and on with the power
switch. The settings are retained when the line power is turned off and on.
The instrument periodically saves front panel settings after settings are changed. There is a delay
of three seconds after the last change and before the storage of the settings in memory.
Specifications
2 TBS1000C Series Specification and Performance Verification

Math modes Channel 1 – Channel 2
Channel 2 – Channel 1
Channel 1 + Channel 2
Channel 1 * Channel 2
FFT
Voltage measurement functions Mean, Cycle Mean, Cursor Mean, Max, Min, RMS, Cycle RMS, Cursor RMS, Peak-to-Peak,
Amplitude, Positive Overshoot, Negative Overshoot, High, Low.
DC balance 0.2 div at 1 mVdiv and up with the input 1 MW-DC coupled and 50 W terminated.
✓DC gain accuracy, Sample or
Average acquisition
This is the difference between the measured DC gain and the nominal DC gain, divided by the
nominal DC gain and expressed as a percent.
+/-3.0% step gain, derated at 0.1%/°C above 30°C.
DC voltage measurement
accuracy, average acquisition
mode
This is the accuracy of DC voltage DC voltage measurements acquired using average of >
16 waveforms.
Average of > 16 waveforms: ±((DC gain accuracy) X |reading - (offset - position)| + offset accuracy
+ 0.1 div + 1mV)
Analog bandwidth Defined in Section 4.6 of IEEE std 1057. The difference between the upper and lower frequencies,
at which the amplitude response, as seen in the data record, is 0.707 (-3 dB) of the response seen
in the data record at the specified reference frequency. Specifies only the -3 dB point. It does not
include the in-band response.
√ Analog bandwidth, DC coupled,
Sample or Average
200 MHz models:
DC to >200 MHz for 1 mV/div through 10 V/div.
100 MHz models:
DC to >100 MHz for 1 mV/div through 10 V/div.
70 MHz models:
DC to >70 MHz for 1 mV/div through 10 V/div.
50 MHz models:
DC to >50 MHz for 1 mV/div through 10 V/div.
Analog bandwidth selections 20 MHz bandwidth limit ON/OFF
Upper-Frequency limit, 20 MHz
bandwidth limited, typical
This is the upper frequency for Analog Bandwidth when the instrument has 20 MHz bandwidth
limiting turned on.
20 MHz, ±25%
Specifications
TBS1000C Series Specification and Performance Verification 3

Bandwidth of all trigger paths are similarly limited, except the Aux-In, which is not affected by BW
Limit function. Each channel is separately limited, allowing different bandwidths on different
channels of the same instrument.
Lower- Frequency limit, AC
coupled
This is the lower frequency for Analog Bandwidth when the instrument is AC-coupled.
≤ 10 Hz.
Rise time, typical Model Expected full bandwidth rise time
TBS1202C 2.1 ns
TBS1102C 3.5 ns
TBS1072C 5.0 ns
TBS1052C 7.0 ns
Rise time is generally calculated from the following formula: Rise time in ns = 350 / Bandwidth in
MHz
√ Vertical position accuracy, offset
accuracy
This is the accuracy of the nominal voltage level represented by the code at the vendor of the A-D
converter's dynamic range.
± (0.01 X |offset – position | + DC Balance)
Vertical position ranges ± 5 divisions
Common Mode Rejection Ratio
(CMRR), typical
With the same signal applied to each channel, CMRR is the ratio of the acquired signal amplitude
to the amplitude of the MATH difference waveform, either (Channel 1 - Channel 2), (Channel 2 -
Channel 1)
Model Common Mode Rejection Ratio
TBS1202C
TBS1102C
TBS1072C
TBS1052C
100:1 at 60 Hz, reducing to 10:1 with 50 MHz
sine wave, with equal Volts/Div and Coupling
settings on each channel.
Crosstalk (Channel Isolation) Section 4.11.1 of IEEE std. 1057. It is the ratio of the level of a signal input into one channel to that
of the same signal present in another channel due to stray coupling.
Model Common Mode Rejection Ratio
TBS1202C (200 MHz models) >100:1 with 200 MHz sine wave and with equal
V/div settings on each channel.
TBS1102C (100 MHz models) >100:1 with 100 MHz sine wave and with equal
V/div settings on each channel.
TBS1072C (70 MHz models) >100:1 with 70 MHz sine wave and with equal V/
div settings on each channel.
TBS1052C (50 MHz models) >100:1 with 50 MHz sine wave and with equal V/
div settings on each channel.
Specifications
4 TBS1000C Series Specification and Performance Verification

Waveform measurements
Automated measurements 32, of which up to six can be displayed on-screen at any one time. Measurements include: Period,
Frequency, Rise Time, Fall Time, Positive Duty Cycle, Negative Duty Cycle, Positive Pulse Width,
Negative Pulse Width, Burst Width, Phase, Positive Overshoot, Negative Overshoot, Peak to Peak,
Amplitude, High, Low, Max, Min, Mean, Cycle Mean, RMS, Cycle RMS, Positive Pulse Count,
Negative Pulse Count, Rising Edge Count, Falling Edge Count, Area, Cycle Area, Delay FR, Delay
FF, Delay FR, and Delay RR.
Cursors Time, Amplitude, Screen
Gating Isolate the specific occurrence within an acquisition to take measurements on, using either the
screen, between waveform cursors or full record length.
Time Base System
Sample-Rate range This is the range of real-time rates, expressed in samples/second, at which a digitizer samples
signals at its inputs and stores the samples in memory to produce a record of time-sequential
samples. (IEEE 1057, 2.2.1)
1 GS/s all channels (TBS1202C, TBS1102C, TBS1072C, TBS1052C)
Waveform interpolation Only (sin x)/x interpolation is provided.
Record length This is the total number of samples contained in a single acquired waveform record (Memory
Length in IEEE 1057.2.2.1).
20k, 2k and 1k samples per record.
Seconds/Division range
Model Range
TBS1202C, TBS1102C 2 ns/div to 100 sec/div in a 1-2-4 sequence
TBS1072C, TBS1052C
√ Long-Term sample rate and
horizontal position time accuracy
This is the maximum, total, long-term error in sample-rate or horizontal position time accuracy,
expressed in parts per million.
±25 x 10-6 over any >1 ms interval.
Zoom The zoom function enables a user to select a part of the display to be magnified. Both the original
waveform and the zoomed waveform are displayed. The user chooses the waveform with the
Multipurpose knob.
Delta time measurement accuracy This is the accuracy of delta time measurements made on any single waveform. The specification
is related to the long-term sampling rate.
The following limits are given for signals having an amplitude ≥ 5 divisions, a slew rate at the
measurement points of ≥ 2.0 divisions/ns, and acquired ≥ 10 mV/div.
Specifications
TBS1000C Series Specification and Performance Verification 5

Condition Time measurement accuracy
Single shot, sample mode, full bandwidth
selected
±(1 Sample Internal + 25 X 10-6 X |reading| +
0.6 ns)
> 16 averages, full bandwidth selected ±(1 Sample Internal + 25 X 10-6 X |reading| +
0.4 ns)
The Sample Interval is the time between the samples in the waveform record.
Time measurement functions Frequency, Period , Rise, Fall, Pwidth, Nwidth, Pduty, Nduty, DelayRR, DelayRF, DelayFR,
DelayFF, Burst width, Phase.
Waveform Math
Arithmetic Add, Subtract, and Multiply waveforms
FFT Spectral magnitude. Set FFT Vertical Scale to Linear RMS or dBV RMS, and FFT Window to
Rectangular, Hamming, Hanning, or Blackman-Harris.
Triggering system
Trigger types Edge Positive or negative slope on any channel.
Coupling includes DC, HF reject, LF reject, and
noise reject.
Pulse Width Trigger on width of positive or negative pulses
that are >, <, =, or ≠ a specified period of time.
Runt Trigger on a pulse that crosses one threshold
but fails to cross a second threshold before
crossing the first again.
Trigger source selection Analog channels, Aux In (External), AC Line.
Horizontal trigger position The trigger position is set by the Horizontal Position knob.
Aux In input impedance 1 MΩ ±2 %, 13 pF ±2 pF
Aux In maximum input voltage 300 VRMS, Installation Category II; derate at 20 dB/decade above 100 kHz to 13 V peak AC at
3 MHz and above
Based on sinusoidal or DC input signal. The maximum viewable signal while DC coupled is ±50 V
offset ±5 V/div at 4 divisions, or 70 V. AC coupling allows measuring signals on a DC level up to
300 V. For non sinusoidal waveforms, peak value must be less than 450 V. Excursions above
300 V should be less than 100 ms duration and the duty factor is limited to < 44%. RMS signal level
must be limited to 300 V. If these values are exceeded, damage to the instrument may result.
Line trigger characteristics Line Trigger mode provides a source to synchronize the trigger with the AC line input.
Input Amplitude requirements: 85 VAC - 265 VAC.
Input Frequency requirements: 45 Hz - 440 Hz.
Specifications Time Base System (cont.)
6 TBS1000C Series Specification and Performance Verification

Edge trigger Trigger modes Auto, Normal, Single sequence
Trigger coupling (analog
channels)
AC, DC, Noise Reject, High Freq Reject, Low Freq Reject
The Aun In path does not have a DC blocking capacitor ahead of
the trigger input circuit. The roll off associated with AC coupling
happens after the input circuit. When attempting to trigger on an
AC signal that has a DC offset, use care to avoid overloading the
input of the Aux In circuit. For signals that have a large DC offset,
using Channel 1 or Channel 2 with AC coupling is preferred.
Trigger slope Rising edge, Falling edge
√ Sensitivity, Edge-Type trigger,
DC coupled
Measurement Style A: The minimum signal levels for achieving stable frequency indication on the
Trigger Frequency Counter within 1% of correct indication.
Measurement Style B: Section 4 10.2 in IEEE Std. #1057. The minimum signal levels required for
stable edge triggering of an acquisition when the trigger Source is DC coupled.
Trigger source Sensitivity
(Measurement style
A), typical
Sensitivity
(Measurement style
B)
Channel inputs All products 0.4 division from DC to
50 MHz
0.6 divisions >50 MHz
to 100 MHz
0.8 divisions >100 MHz
to 200 MHz
0.8 div from DC to
10 MHz > 2 mV/div)
2.5 div from DC to
10 MHz (2 mV/Div)
TBS1072C 3 div between 10 MHz
and 70 MHz
1.5 div between
10 MHz and 70 MHz
TBS1102C 3 div between 10 MHz
and 100 MHz
1.5 div between
10 MHz and 100 MHz
TBS1052C 3 div between 10 MHz
and 50 MHz
1.5 div between
10 MHz and 50 MHz
TBS1202C 3 div between 10 MHz
and 200 MHz
1.5 div from 10 MHz
and 100 MHz
2.0 div above 100 MHz
to 200 MHz
Aux In 300 mV from DC to
100 MHz
200 mV from DC to
100 MHz
500 mV from 100 MHz
to 200 MHz
350 mV from 100 MHz
to 200 MHz
TBS1202C TBS1202C
Trigger frequency feadout typically stabilizes at 50% more signal than generates a stable visual
display.
Triggering system (cont.) Specifications
TBS1000C Series Specification and Performance Verification 7

Sensitivity, Edge-Type trigger, not-
DC coupled, typical Trigger coupling Typical sensitivity
AC coupled Same as DC coupled limits for frequencies 50 Hz and above
Noise rej Effective in Sample or Average Mode, > 10 mV/div to 5 V/div.
Reduces DC coupled trigger sensitivity by 2X.
HF rej Same as DC coupled limits from DC to 7 kHz.
LF rej Same as DC coupled limits for frequencies above 300 kHz.
Lowest frequency for successful
operation of "Set Level to 50%"
function, typical.
This is the typical lowest frequency for which the “Set Level to 50%” function will successfully
determine the 50% point of the trigger signal.
50 Hz.
Trigger level ranges, typical Input Channels: +/-4.90 divisions from center screen
Aux In: +/-6.25 V, 1X probe attenuation, +/- 12.50 V, 10X probe attenuation
Trigger signal frequency readout Provides a frequency readout of the trigger source
Trigger frequency counter
accuracy
±25 x 10-6 including all reference errors and +/-1 count errors
Trigger frequency counter
frequency range
12 Hz minimum to rated bandwidth
Trigger frequency counter
resolution
3 digits
Trigger frequency counter signal
source
Edge selected trigger source only
Trigger level accuracy, DC
coupled, typical
This is the amount of deviation allowed between the level on the waveform at which triggering
occurs and the level selected for DC-coupled triggering signals. A sine wave with 20 ns rise time
corresponds to about 18 MHz.
±0.2 div for signals within ±4 divisions from the center screen, having rise and fall times of ≥ 20 ns.
Aux In: ±(6% of setting + 40 mV) for signals less than ±800 mV
Pulse-Width trigger Pulse-Type trigger, minimum
pulse, rearm time, minimum
transition time
Minimum pulse width: 2ns
Minimum re-arm time: 2ns
Time range for pulse width 2 ns to 8 s
Time accuracy for pulse width
triggering
± 2 ns
Pulse-Width trigger modes < (Less than), > (Greater than), = (Equal), ≠ (Not equal)
Pulse width trigger edge Falling edge for positive polarity pulse.
Rising edge for negative polarity pulse.
Pulse width range 33 ns ≤ width ≤ 10 seconds
Pulse width resolution 16.5 ns or 1 part per thousand, whichever is larger
Specifications Triggering system (cont.)
8 TBS1000C Series Specification and Performance Verification

Equal guardband t > 330 ns: ±5% < guardband < ±(5.1% + 16.5 ns)
t ≤ 330 ns: guardband = ±16.5 ns.
All pulses, even from the most stable sources, have some
amount of jitter. To avoid disqualifying pulses that are intended to
qualify but are not absolutely correct values, Tektronix provides
an arbitrary guardband. Any measured pulse width within the
guardband will qualify. If you are looking for pulse width
differences that are smaller than the guardband width, offsetting
the center should allow discriminating differences down to the
guardband accuracy.
Not equal guardband 330 ns < 1: ±5% ≤ guardband < ±(5.1% + 16.5 ns)
165 ns < 1 < 330 ns: guardband = -16.5 ns/+33 ns
t ≤ 165 ns: guardband = ±16.5 ns
All pulses, even from the most stable sources, have some
amount of jitter. To avoid disqualifying pulses that are intended to
qualify but are not absolutely correct values, Tektronix provides
an arbitrary guardband. Any measured pulse width outside the
guardband will qualify. If you are looking for pulse width
differences that are smaller than the guardband width, offsetting
the center should allow discriminating differences down to the
guardband accuracy. Not equal has slightly better ability to deal
with small pulse widths than equal. The accuracy is not better.
Pulse-Width trigger point Equal: The oscilloscope triggers when the trailing edge of the
pulse crosses the trigger level.
Not Equal: If the pulse is narrower than the specified width, the
trigger point is the trailing edge. Otherwise, the oscilloscope
triggers when a pulse continues longer than the time specified as
the Pulse Width.
Less than: The trigger point is the trailing edge.
Greater than (also called the time out trigger): The
oscilloscope triggers when a pulse continues longer than the time
specified as the Pulse Width.
Triggering system (cont.) Specifications
TBS1000C Series Specification and Performance Verification 9

Display specifications
Display type 7 inch TFT Liquid Crystal Display (LCD).
Display Resolution This is the number of individually addressable pixels
800 horizontal by 480 vertical displayed pixels
Format YT and XY
Waveform styles Vectors, variable persistence, and Infinite persistence.
Luminance, typical 300 cd/m2, typical.
Contrast ratio and control, typical Available black room contrast ratio, full black to full white. 400 minimum, 500 typical.
Interfaces and output ports specifications
USB Interface 1 High Speed USB2.0 Host and 1 High Speed USB2.0 Device connector are standard in all
models.
Kensington style lock Rear-Panel security slot connects to standard Kensington-style lock
Probe compensator, output
voltage and frequency, typical
The Probe compensator output voltage is in peak-to-peak volts and frequency is in Hertz.
0-5V amplitude +/- 10%, 1 kHz +/- 10%
Data handling characteristics
Retention of front panel settings Front panel settings are stored periodically in memory. The settings are not lost when the
instrument is turned off or if there is a power failure.
Stored waveforms and multiple
front panel settings
Two Channel 1, Channel 2, or Math waveforms can be stored in nonvolatile waveform memory A or
B. One, both, or neither of A or B waveform memories can be displayed. Ten user setups of the
current instrument settings can be saved and restored from nonvolatile memory. Additional storage
is available when an appropriate mass storage device is connected via USB.
Specifications
10 TBS1000C Series Specification and Performance Verification