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TSO8C17
Installation Manual
34 pgs878.88 Kb0
Performance Verification
31 pgs692.41 Kb0
Programmer
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Tektronix TSO820, TSO8C17, TSO8C18 Performance Verification

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TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification
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Table of Contents

Table of Contents
Important safety information..........................................................................................................................................................4
To avoid fire or personal injury........................................................................................................................................4
Preface .........................................................................................................................................................................................7
Specifications................................................................................................................................................................................ 8
Vertical system................................................................................................................................................................8
Signal acquisition system................................................................................................................................................8
Timebase system............................................................................................................................................................8
Trigger system................................................................................................................................................................ 8
Clock prescale input trigger operation............................................................................................................................ 8
Controls and indicators................................................................................................................................................... 9
Input and Output communication ports...........................................................................................................................9
Physical characteristics.................................................................................................................................................10
Environmental performance..........................................................................................................................................10
Waveform measurement...............................................................................................................................................10
Optical inputs................................................................................................................................................................ 11
Optical channel inputs...................................................................................................................................................11
Physical characteristics ................................................................................................................................................12
Environmental performance..........................................................................................................................................12
Performance Verification.............................................................................................................................................................13
Clock prescale input trigger sensitivity test record........................................................................................................21
Frequency Response Test Record 12.6 GHz............................................................................................................... 23
Frequency Response Test Record 13.28125 GHz....................................................................................................... 24
Frequency Response Test Record 19.335 GHz........................................................................................................... 25
Frequency Response Test Record 21 GHz.................................................................................................................. 26
Frequency Response Test Record 22.5 GHz............................................................................................................... 27
Power monitor accuracy AOP Error test record............................................................................................................28
Power monitor accuracy AOP mean test record...........................................................................................................29
Vertical equivalent optical noise test record..................................................................................................................30
Output zero (dark level) test record.............................................................................................................................. 31
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification iii

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.
Important safety information
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
Power disconnect. The power cord disconnects the product from the power source. See instructions for
Observe all terminal ratings To avoid fire or shock hazard, observe all rating and markings on the product.
Do not use the provided power cord for other products.
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.
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.
Consult the product manual for further ratings information before making connections 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 measuring terminals on this product are not rated for connection to mains or
Category II, III, or IV circuits.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 4
Important safety information
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.
Do not operate in wet/damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Provide proper ventilation. Refer to the installation instructions in the manual for details on installing the product
Provide a safe working environment.
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.
Be aware that condensation may occur if a unit is moved from a cold to a warm environment.
Remove the input signals before you clean 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.
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.
Use only the Tektronix rackmount hardware specified for this product. Use only the Tektronix rackmount hardware specified for this product.

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.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 5
Important safety information
Use care when servicing with power on
Verify safety after repair Always recheck ground continuity and mains dielectric strength after performing a

Terms in the manual

These terms may appear in this manual:
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.
repair.
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

The following symbols(s) may appear 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.)
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 6

Preface

This manual contains specifications, test record, and performance verification procedures for the following instruments:
• TSO820 sampling oscilloscope (mainframe)
• TSO8C17 one channel optical module
• TSO8C18 two channel optical module

Related documents

In addition to this Specifications and Performance Verification Technical Reference, the following documents are available for download. For the most recent versions these documents, visit the Tektronix Web site at www.tek.com/manuals. You can find manuals by searching on the product name and selecting the Manuals filter.
To learn about Use this document
How to install and turn on the instrument software and hardware; read safety and compliance information.
How to operate the instrument, take measurements, navigate the UI.
How to remotely control the instrument using programmatic commands. Syntax provided.
Mainframe and module specifications. Includes procedures to verify that the mainframe and modules meet warranted specifications.
Installing up to two mainframes, or a mainframe and a TCR801 clock recovery unit into a standard instrument rack using the rackmount kit.
How to declassify, sanitize, and clear memory devices in the instrument.
Preface
TSO8 Series Installation and Safety Instructions. Printed and shipped with the instrument. Also available online as a downloadable PDF. This document contains content in English, Japanese, and Simplified Chinese.
TSO8 Series Help (a PDF of this Help is available as a downloadable PDF)
TSO8 Series Programming Manual
TSO8 Series Specifications and Performance Verification Technical Reference (this document)
TSO8 Series Rackmount Instructions
TSO8 Series Declassification and Security Instructions
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 7

Specifications

TSO820 mainframe

Vertical system

Rise time / bandwidth Determined by the sampling modules used
Vertical resolution (nominal) 15.6 bits over the sampling modules’ dynamic range

Signal acquisition system

Number of input channels 4 user channels acquisition maximum
Number of slots 2 slots, 2 channels per slot, for 4 channels total
Vertical resolution 15.6 bits at Tek Probe-Sampling interface

Timebase system

Main time base / horizontal scale 1 ps / div to 1 ms / div in 1-2-5 sequence or 1 ps increments
Horizontal modes Supports Free Run Trigger and Clock Trigger mode
Clock trigger mode sampling rate 200 kHz – 300 kHz, dictated by sample resolution of Time Base setup
Horizontal position range
Specifications
• 19 ns minimum to 50 ms maximum; depends upon the reference clock frequency (refClkFreq) per the formula:
Horizontal position setting resolution
Record length
Horizontal sample resolution 10 fs minimum to 10 μs maximum
Time interval accuracy, Clock triggered mode (typical)

Trigger system

Trigger sources Supports the following for trigger source:

Clock prescale input trigger operation

Clock prescale input characteristics
Clock prescale input pattern lengths supported
• Horizontal position reference can change within the record, so the maximum horizontal position value depends upon the horizontal scale as well.
10 fs minimum
• Pattern Sync is Off: 1000 to 838,860,700
• Pattern Sync is On: 762 to 838,860,700
± (1 ps + 1.5 % of trigger clock period)
• Clock Prescale Input
• Free Run Trigger
50 Ω, AC coupled
127 to 223 -1 (8,388,607) inclusive
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 8
Specifications
Clock prescale input absolute maximum input
Clock prescale input usable frequency range
Clock prescale input range 200 mVp-p to 1000 mVp-p over the range 500 MHz - 32 GHz
Clock prescale input jitter 500 MHz to 2 GHz: < 1530 fs RMS (sinusoidal trigger waveform; typical square-wave

Controls and indicators

Display type 61 mm (W) x 12 mm (H), 2 x 20 liquid crystal display (LCD)
Display resolution 5 (W) x 8 (H) pixels per alphanumeric character
Background color White
Move display curser Left, Right, Up, Down, Select
Power button Powers unit on/off. Blue LED indicates power is On. Amber LED indicates power is
Control interface IEEE 100BASE-T, 1000BASE-T; RJ45 connector
Device information Instrument serial number, software version, other available using TSOVu
2.0 Vp-p
500 MHz - 32 GHz
performance similar to below values) 2 to 3 GHz: < 600 fsRMS 3 to 9 GHz: < 580 fsRMS 9 to 32 GHz: < 500 fsRMS
Keypad buttons to move display cursor and select selections. Blue backlit keys.
Off (in standby mode). To completely power off, unplug unit from power source.

Input and Output communication ports

Gigabit ethernet IEEE 802.3™ 100BASE-T/1000BASE-T
USB 3.0 USB port used for software updates via USB Flash drives only.
Front panel
Anti-static protection connector Banana-jack connector, 1 MΩ to chassis ground
Rear panel
Ethernet port RJ45 connector; supports IEEE 802.3™ Ethernet 100/1000BASE-T
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 9

Physical characteristics

Weight (with blank module)
Clearance requirements The clearance requirement for adequate cooling is 2.0 in (50.8 mm) on both sides
Overall dimensions TSO820 (with filler module, no functional modules) requirements that follow are

Environmental performance

Temperature
Specifications
• 12.0 lbs (5.4 kg) Stand-alone instrument, without front cover.
• 19.5 lbs (8.8 kg) Instrument with rackmount, without front cover.
and at the rear of the instrument. Cooling inlets on the bottom require that the instrument rests on a flat surface with feet providing sufficient clearance.
nominal and unboxed:
Height 132 mm (5.18 in.)
Width 217 mm (8.56 in.)
Depth 590 mm (23.22 in.)
• Operating: 5 °C to +45 °C, with 15 °C/hour maximum gradient, non-condensing, derated 1.0 °C per 300 meters above 1,500 meters altitude.
• Non-operating: -20 °C to +60 °C, with 30 °C/hour maximum gradient
Altitude
Humidity

Waveform measurement

System measurement rate Supports up to 32 simultaneous measurement with optional display of per-
Cursors Vertical bar, horizontal bar, vertical and horizontal bar, and waveform cursors
Waveform processing Bandwidth Enhancement/Impulse Response Correction (BWE)
Histograms Supports up to 30 histograms on multiple windows
Pulse measurements (built-in) High, Low, Amplitude, Max, Min, Mid, Mean, Peak-Peak, Period, Frequency, Rise,
PAM4 measurements (optional) RLM, Level, Level Deviation, Level Thickness, OMAouter, Extinction Ratio, ES
• Operating: Up to 3,000 meters, derate maximum operating temperature by 1 °C per 300 meters above 1,500 meters altitude.
• Non-operating: Up to 12,000 meters
• Operating: 5% to 95% RH (relative humidity) at up to +30 °C, 5% to 45% RH above +30 °C up to +45 °C, non-condensing
• Non-operating: 5% to 95% RH (relative humidity) at up to +30 °C, 5% to 45% RH above +30 °C up to +60 °C, non-condensing
measurement statistics (min, max, mean and standard deviation)
TDECQ equalized waveform
Fall, Positive Cross, Negative Cross, Positive Width, Negative Width, RMS Jitter, Pk­Pk Jitter, Delay
Levels, Eye Width, Eye Height, Transition Time, Overshoot, Undershoot, TDECQ
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 10

TSO8C17 and TSO8C18 Specifications

Optical inputs

Optical channel count
Wavelength range (typical) 750 nm to 1650 nm
Calibrated wavelength (±20 nm) 850 nm, 1310 nm, and 1550 nm
Fiber input 50 / 125 µm multi-mode type
Typical mask test sensitivity: 100GBASE-LR4
Unfiltered optical bandwidth
• TSO8C17: One optical channel
• TSO8C18: Two optical channels
-14 dBm at 1310 nm
• Multi-mode: 30 GHz
• Single mode: 30 GHz
Specifications
Optical return loss

Optical channel inputs

Optical power meter range -38 dBm to +6 dBm at 1310 nm
Mainframe display vertical scale factors
Channel delay range ±65 ps
Output zero (dark level) < 10 μW ±4 % (vertical offset)
Vertical offset range ± 2.25 mW offset
DC vertical accuracy ± 10 μW ± 5% of vertical reading
Power meter accuracy ± [100 nW + (External power meter reading)] * [5% + 6% Uncertainty]
RMS optical noise (hardware; typical)
• Multi-mode: > 16 dB
• Single mode: > 16 dB
• Maximum: 350 μW/div
• Minimum: 3.5 μW/div
Bandwidth 850 nm 1310 nm 1550 nm
12.6 GHz 4.2 μW 2.8 μW 3.0 μW
13.28125 GHz 4.3 μW 2.9 μW 3.0 μW
19.335 GHz 5.3 μW 3.7 μW 3.9 μW
21 GHz 6.2 μW 4.2 μW 4.4 μW
22.5 GHz 8.1 μW 5.0 μW 5.4 μW
RMS optical noise (hardware; maximum)
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 11
Bandwidth 850 nm 1310 nm 1550 nm
12.6 GHz 6 μW 3.6 μW 3.9 μW
13.28125 GHz 6 μW 3.6 μW 3.9 μW
19.335 GHz 7.5 μW 4.5 μW 4.8 μW
21 GHz 8.3 μW 5.0 μW 5.4 μW
22.5 GHz 11.1 μW 6.7 μW 6.9 μW
Specifications
Supported optical reference receivers
Front panel optical fiber connectors

Physical characteristics

Dimensions
Height 2.1 in. (53 mm)
Width 3.76 in. (96 mm)
Depth 10.35 in. (263 mm)
Weight
TSO8C17 1.21 lbs. (0.549 kg)
TSO8C18 1.46 lbs. (0.660 kg)
TSO8C17 and TSO8C18 PAM2 / NRZ PAM4
25.78 GBd (TDEC-MM)
25.78 GBd
27.95 GBd 53.125 GBd standards of
28.05 GBd
FC/PC bulk head receptacle
26.5625 GBd Single-mode and multi-mode standards of the IEEE 802.3™ (E.g. BWel 13.28125 GHz)
the IEEE 802.3™ (E.g. BWel 26.5625 GHz)

Environmental performance

Temperature
Altitude
Humidity
• Operating: 5 °C to +45 °C, with 15 °C/hour maximum gradient, non-condensing, derated 1.0 °C per 300 meters above 1,500 meters altitude.
• Non-operating: -20 °C to +60 °C, with 30 °C/hour maximum gradient
• Operating: Up to 3,000 meters, derate maximum operating temperature by 1 °C per 300 meters above 1,500 meters altitude.
• Non-operating: Up to 12,000 meters
• Operating: 5% to 95% RH (relative humidity) at up to +30 °C, 5% to 45% RH above +30 °C up to +45 °C, non-condensing
• Non-operating: 5% to 95% RH (relative humidity) at up to +30 °C, 5% to 45% RH above +30 °C up to +60 °C, non-condensing
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 12

Performance Verification

Clock prescale input trigger sensitivity

Apply sinusoid from synthesizer through a 6 dB passive coupler, splitting the signal between the clock prescale input and a calibrated power meter. Compare the measured clock prescale frequency with the nominal test frequencies, stepped from 1 GHz to 32 GHz in 1 GHz increments, and including 500 MHz.
Required equipment
Equipment Example
Mainframe (Sampling oscilloscope) Tektronix TSO820
Optical sampling module Tektronix TSO8C17 or TSO8C18
40 GHz synthesize generator Anritsu MG3694C
6 dB power splitter Anritsu K241C
Power meter with remote sensor R&S NRX Power Meter with NRP-Z85.02 Remote Sensor
Test setup
Performance Verification
Figure 1: Clock prescale input trigger sensitivity setup
Procedure
1. Connect the synthesized generator output to a 6 dB splitter, splitting the signal between the clock prescale input and
power meter.
2. In TSOVu, set the Trigger source to clock prescale input.
3. Set the synthesized generator frequency to 500 MHz and power level equivalent to 200 mVp-p (-10 dBm).
4. Set the TSOVu symbol rate to 500 MHz.
5. Retrieve the Trigger clock prescale frequency.
6. Verify the frequency is within 0.5 % of the set value. This verifies the minimum trigger level.
7. Repeat steps 4-6 for frequency settings from 1 GHz - 32 GHz in 1 GHz steps.
8. Set the synthesized generator to 500 MHz and power level equivalent to 1 Vp-p (3.98 dBm) at the User clock input.
9. Retrieve the Trigger clock prescale frequency.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 13
10. Verify the frequency is within 0.5 % of the set value. This verifies the maximum trigger level.
11. Repeat steps 8-10 for frequency settings from 1 GHz - 32 GHz in 1 GHz step intervals.

Frequency response

Verification of the reference receiver response and optical bandwidth using the impulse method.
Required equipment
Equipment Example
Mainframe (Sampling oscilloscope) Tektronix TSO820
Optical sampling module Tektronix TSO8C17 or TSO8C18
Optical attenuator OZ Optics BB-100-11-850-5/125-S-40-3S3S-3-0.1
Impulse laser Calmar Mendocino 1550 nm impulse laser with 10 GHz
Impulse laser Calmar Mendocino 850 nm impulse laser with 10 GHz
Test setup
Performance Verification
synchronous clock output and 20 MHz repetition rate
synchronous clock output and 20 MHz repetition rate
Figure 2: Frequency response test setup
Connect either the 1550 nm or 850 nm impulse laser through an attenuator to the Unit Under Test (UUT) input.
Procedure
Set the impulse up on the module, retrieve the data and calculate the bandwidth or compare the frequency response to the Optical Reference Receiver (ORR).
1. Setup the oscilloscope horizontal settings
a. Pattern Sync: On b. Symbol Rate: 10 GBd c. Samples / UI: 100 d. Data Clock Ratio: 1:1
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 14
Performance Verification
e. Pattern Length: 500 f. Trigger Source: Clock Prescale Input g. Acquisition: Sample
2. Set optical attenuator to ~36 dB.
3. Connect the 1550 nm optical signal from the impulse laser through the optical attenuator to the optical channel under
test.
4. Connect the 10 GHz synchronous clock signal to the clock prescale input.
5. In the Optical Settings menu, select the correct wavelength for the optical source being used.
a. Select Filter Type: Hardware Filter b. Select BW Electrical: 12.6 GHz, 13.28125 GHz, 19.335 GHz, or 21 GHz
6. Start acquiring.
7. Adjust the optical attenuator until the impulse is between 500 μW and 1 mW peak amplitude.
8. Set Acquisition to 32 Averages.
9. Acquire averaged waveform and retrieve the curve data.
10. Create a 50 ns rectangular window around the impulse, with the impulse peak located approximately 5 ns from the left
side of the window.
11. Calculate the mean value of all curve data outside of the 50 ns window and subtract this mean value from the windowed data.
12. Perform a Discrete Fourier Transform (DFT) on the windowed data. The DFT data will have 200 MHz spacing in the frequency domain with a Nyquist frequency of 500 GHz.
13. Compare the magnitude response of the DFT to the ORR tolerances for the filter being used. If checking the 22.5 GHz filter, then verify that the 3 dB optical bandwidth is > 30 GHz.
14. Repeat steps 5-15 for all bandwidth settings.
15. Repeat steps 2-16 with the 850 nm source.
16. Connect Optical signal from the Optical attenuator output to next sampling oscilloscope optical channel input and
repeat steps 2-17 until all populated channels are tested.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 15

Power monitor accuracy

Verify the accuracy of the AOP (Average Optical Power) and Mean measurement of the UUT by comparing the measurement to an external optical power meter.
Required equipment
Equipment Example
Mainframe (Sampling oscilloscope) Tektronix TSO820
Optical sampling module TSO8C17 or TSO8C18
1550 nm Optical source OZ Optics HIFOSS-01-3S-9/125-1550-S-30
1310 nm Optical source OZ Optics HIFOSS-01-3S-9/125-1310-S-30
850 nm Optical source OZ Optics HIFOSS-01-3S-9/125-850-S-30-SP
Optical attenuator OZ Optics BB-100-11-850-5/125-S-40-3S3S-3-0.1
Optical power meter Yokogawa AQ2200-212
Test setup
Performance Verification
Figure 3: Power adjust test setup
Apply either 1550 nm, 1310 nm, or 850 nm at 200 μW signal to the attenuator, then to the power meter. Use the optical attenuator to adjust the power level to 200 μW, then change the output of the attenuator to the sampling oscilloscope optical input channel under test.
Procedure
The signal is measured using the optical module AOP. The AOP measurement is then compared to the external optical power meter reading. A mean waveform measurement is also used and is compared to the AOP measurement.
1. Perform mainframe and channel compensation prior to test.
2. Setup oscilloscope Trigger and Acquisition settings.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 16
Figure 4: Power monitor accuracy test setup
a. Record length: 25000 b. Horizontal scale: 1 ns/div c. Trigger source: Free Run d. Acquisition: Average e. Stop after 16 Averages
3. Apply the signal from 1310 nm source to the external optical power meter.
4. Set the optical channel wavelength to 1310 nm.
5. Set the bandwidth electrical to 21 GHz.
6. Adjust the power level to 200 μW using the attenuator.
7. Record the external optical power meter measurement as Inputpower.
8. Apply the signal to the optical channel under test.
9. Record the mean measurement as UUTMean.
10. Record the AOP measurement as UUTAOP.
11. Calculate the AOP % error and the Mean % error.
Performance Verification
12. Return % Error AOP and % Error mean and compare to ±5 % specification.
13. Repeat steps 3-12 for all other wavelength settings.
14. Repeat all steps until all populated channels are tested.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 17

Vertical equivalent optical noise

For each bandwidth setting a vertical histogram is used to measure the vertical RMS noise.
This test measures the UUTs vertical equivalent optical noise for all bandwidths and wavelength settings. It is very important that no stray light be allowed to enter the DUT during this test as it will affect the measurement. Additionally the optical module under test and the oscilloscope must have been compensated within a recent time (See the compensation test method for more information). The noise is measured using a vertical histogram. The vertical scale must be set to the minimum that can be allowed and not lose any points off the screen, because the histogram accuracy depends on the rasterized waveform vertical resolution.
Required equipment
TSO820 with TSO8C17 or TSO8C18 optical sampling module
Test setup
Noise is measured with the system triggered in Free Run and the optical inputs capped. Measurements are made at all channel wavelength and bandwidth settings.
Procedure
1. Remove any optical signal fiber from the UUT and place a light blocking cap over the input.
2. Compensate the channel.
3. Set the oscilloscope to trigger in Free run mode and set Acquisition mode to sample, stop after 4 Acquisition.
4. Set the Horizontal Scale to 100 ps/div, Record Length to 16384.
5. Setup the histogram.
Performance Verification
a. Set mode to vertical. b. Set the source to the channel being tested. c. Setup the histogram to cover the entire screen.
6. Choose the bandwidth and wavelength setting to be measured.
7. Turn on the display of the channel under test, and set the vertical scale as low as possible such there are no potential
histogram hits occurring off screen.
8. Click Set Persist Data to On and set Persistence to Infinite for the channel being tested.
9. Start the oscilloscope acquisition.
10. Wait for the acquire condition to be met.
11. Record the histogram standard deviation and check against the noise specification for this bandwidth and wavelength
setting.
Table 1: Noise specification
Bandwidth (GHz) 850 nm RMS Noise (µW) 1310 nm RMS Noise (µW) 1550 nm RMS Noise (µW)
12.6 GHz 6 3.6 3.9
13.28125 GHz 6 3.6 3.9
19.335 GHz 7.5 4.5 4.8
21 GHz 8.3 5.0 5.4
22.5 GHz 11.1 6.7 6.9
12. Repeat steps 7-10 for all bandwidth and wavelength settings.
13. Repeat steps 1 -12 for all populated channels.
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 18

Output zero (dark level)

Measure the mean value of the signal when no input is applied. Check all bandwidth and filter settings.
Required equipment
TSO820 with optical sampling module
Test setup
Dark level is measured with the system triggered in Free Run and the optical inputs capped. Measurements are made at all channel wavelength and bandwidth settings. Compensation on the channel under test must have been run recently with no change in ambient temperature greater than 1 °C occurring in between compensation and the dark level test.
Procedure
1. Remove any optical signal fiber from the UUT and place a light blocking cap over the input.
2. Set the oscilloscope to trigger in Free Run mode.
3. Compensate the channel.
4. Set Vertical offset to 0 mW for the channel under test.
5. Set the Acquisition mode to Average, Stop after 32 Averages.
6. Set the Horizontal Scale to 1 ns/div, Record Length to 25000.
7. Choose the bandwidth and wavelength setting to be measured.
8. Turn on the display of the channel under test.
9. Add a Mean measurement for to the channel under test.
10. Start the oscilloscope acquisition and record the Mean measurement after the stop condition has been met.
11. Mean measurement should be within the specified limits.
12. Set vertical offset to 1.4 mW and repeat steps 4-10.
13. Repeat steps 10 - 12 for all bandwidth and wavelength settings.
14. Repeat steps 1 -13 for all populated channels.
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 19

TSO820 sampling oscilloscope test records

This section contains test records that you can use to record the results of your performance verification checks.
Do not enter values into the records contained in this manual; rather, make copies of the records and enter test results on the copies.
The test records provide entries for all checks found in the Performance Tests procedures.
For each channel tested, photocopy this and the next page, and record the performance test results for the main-instrument test record.
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 20

Clock prescale input trigger sensitivity test record

Test: Clock prescale input trigger sensitivity
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Performance Verification
Frequency (GHz) Minimum Frequency measured
(GHz)
0.5 200 mV 1000 mV
1 200 mV 1000 mV
2 200 mV 1000 mV
3 200 mV 1000 mV
4 200 mV 1000 mV
5 200 mV 1000 mV
6 200 mV 1000 mV
7 200 mV 1000 mV
8 200 mV 1000 mV
9 200 mV 1000 mV
10 200 mV 1000 mV
11 200 mV 1000 mV
12 200 mV 1000 mV
13 200 mV 1000 mV
14 200 mV 1000 mV
15 200 mV 1000 mV
16 200 mV 1000 mV
17 200 mV 1000 mV
18 200 mV 1000 mV
19 200 mV 1000 mV
20 200 mV 1000 mV
21 200 mV 1000 mV
22 200 mV 1000 mV
23 200 mV 1000 mV
24 200 mV 1000 mV
25 200 mV 1000 mV
26 200 mV 1000 mV
27 200 mV 1000 mV
Table continued…
Maximum Frequency measured
(GHz)
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 21
Performance Verification
Frequency (GHz) Minimum Frequency measured
(GHz)
28 200 mV 1000 mV
29 200 mV 1000 mV
30 200 mV 1000 mV
31 200 mV 1000 mV
32 200 mV 1000 mV
Maximum Frequency measured
(GHz)
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 22

Frequency Response Test Record 12.6 GHz

Test: Frequency response at 12.6 GHz
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Performance Verification
Frequency (GHz) Amplitude (dB) Frequency (GHz) Amplitude (dB) Frequency (GHz) Amplitude (dB)
1 11 21
2 12 22
3 13 23
4 14 24
5 15 25
6 16
7 17
8 18
9 19
10 20
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 23

Frequency Response Test Record 13.28125 GHz

Test: Frequency response at 13.28125 GHz
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Performance Verification
Frequency (GHz) Amplitude (dB) Frequency (GHz) Amplitude (dB) Frequency (GHz) Amplitude (dB)
1 11 21
2 12 22
3 13 23
4 14 24
5 15 25
6 16 26
7 17
8 18
9 19
10 20
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 24

Frequency Response Test Record 19.335 GHz

Test: Frequency response at 19.335 GHz
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Performance Verification
Frequency (GHz)
1 11 21 31
2 12 22 32
3 13 23 33
4 14 24 34
5 15 25 35
6 16 26 36
7 17 27 37
8 18 28 38
9 19 29
10 20 30
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 25
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)

Frequency Response Test Record 21 GHz

Test: Frequency response at 21 GHz
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Performance Verification
Frequency (GHz)
1 11 21 31
2 12 22 32
3 13 23 33
4 14 24 34
5 15 25 35
6 16 26 36
7 17 27 37
8 18 28 38
9 19 29 39
10 20 30 40
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 26
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)
Frequency (GHz)
Amplitude (dB)

Frequency Response Test Record 22.5 GHz

Test: Frequency response at 22.5 GHz
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
BW @ 30GHz : _______________________________________ GHz
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 27

Power monitor accuracy AOP Error test record

Test: Power monitor accuracy (AOP Error)
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Wavelength Bandwidth setting Minimum AOP Error % Maximum
1550 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
1310 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
850 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 28

Power monitor accuracy AOP mean test record

Test: Power monitor accuracy (AOP Mean)
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Wavelength Bandwidth setting Minimum AOP Mean % Maximum
1550 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
1310 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
850 nm 22.5 GHz -5% +5%
21 GHz -5% +5%
19.335 GHz -5% +5%
13.28125 GHz -5% +5%
12.6 GHz -5% +5%
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 29

Vertical equivalent optical noise test record

Test: Vertical equivalent optical noise
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel: (1-4)
Wavelength Bandwidth setting Noise (µW RMS) Maximum
1550 nm 22.5 GHz 6.9
21 GHz 5.4
19.335 GHz 4.8
13.28125 GHz 3.9
12.6 GHz 3.9
1310 nm 22.5 GHz 6.7
21 GHz 5
19.335 GHz 4.5
13.28125 GHz 3.6
12.6 GHz 3.6
850 nm 22.5 GHz 11.1
21 GHz 8.3
19.335 GHz 7.5
13.28125 GHz 6
12.6 GHz 6
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 30

Output zero (dark level) test record

Test: Output zero (dark level)
Instrument serial number:
Certificate number:
Date of calibration:
Technician:
Test record channel:
Wavelength Bandwidth setting Minimum Output zero (µW) Maximum
1550 nm 22.5 GHz -10 µW +10 µW
21 GHz -10 µW +10 µW
19.335 GHz -10 µW +10 µW
13.28125 GHz -10 µW +10 µW
12.6 GHz -10 µW +10 µW
1310 nm 22.5 GHz -10 µW +10 µW
21 GHz -10 µW +10 µW
19.335 GHz -10 µW +10 µW
13.28125 GHz -10 µW +10 µW
12.6 GHz -10 µW +10 µW
850 nm 22.5 GHz -10 µW +10 µW
21 GHz -10 µW +10 µW
19.335 GHz -10 µW +10 µW
13.28125 GHz -10 µW +10 µW
12.6 GHz -10 µW +10 µW
Performance Verification
TSO820 Sampling Oscilloscope, TSO8C17 and TSO8C18 modules Specification and Performance Verification 31
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