Tektronix SPG8000 Technical Reference
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Tektronix SPG8000 Technical Reference

Master sync / clock reference generator
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SPG8000
Master Sync / Clock Reference Generator
Specifications and Performance Verification
ZZZ
Technical Reference
*P077074801*
077-0748-01

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  • Page 1 SPG8000 Master Sync / Clock Reference Generator Specifications and Performance Verification Technical Reference *P077074801* 077-0748-01...
  • Page 3 SPG8000 Master Sync / Clock Reference Generator Specifications and Performance Verification Technical Reference This document applies to firmware version 1.1 and above. www.tektronix.com 077-0748-01...
  • Page 4 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.
  • Page 5 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

  • Page 7: Table Of Contents

    Option GPS specifications ................... Performance verification ..................Performance verification preparation ............... Diagnostics tests ....................SPG8000 base unit performance verification .............. Option AG performance verification ............... Option BG performance verification ............... Option GPS performance verification ..............Option SDI and Option 3G performance verification.............
  • Page 8 Table of Contents List of Figures Figure 1: SPG8000 dimensions ................... Figure 2: Setup to verify clock accuracy................ Figure 3: Setup for genlock test.................. Figure 4: Setup for genlock bit integrity test ..............Figure 5: Setup for LTC input gain and impedance test............
  • Page 9 Table 27: GPS timebase ..................Table 28: Diagnostics test record ................Table 29: Required equipment for SPG8000 base unit performance verification ......Table 30: SPG8000 base unit test record ............... Table 31: Required equipment for Option AG performance verification ........

  • Page 10: General Safety Summary

    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 manual's installation instructions for details on installing the product so it has proper ventilation. SPG8000 Specifications and Performance Verification...
  • Page 11 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. The following symbol(s) may appear on the product: SPG8000 Specifications and Performance Verification...
  • Page 12 General safety summary SPG8000 Specifications and Performance Verification...

  • Page 13: Preface

    Preface This manual describes the specifications and performance verification procedures for the SPG8000 Master Sync / Clock Reference Generator, with or without all of the available options. This manual is divided into two sections: Specifications provides physical and electrical characteristics Performance verification provides procedures to verify the warranted...
  • Page 14 Preface viii SPG8000 Specifications and Performance Verification...

  • Page 15: Specifications

    +20 °C to +30 °C, after a warm-up time of 20 minutes. SPG8000 base unit specifications The following tables list certification and compliance information, and the electrical, environmental, and mechanical characteristics of the SPG8000 base unit. Table 1: Timebase characteristics...

  • Page 16: Table 2: Interface Characteristics

    Signal alarms asserted as long as the error condition exists. Timer based outputs asserted for the 1 second that the selected time counter matches the user defined time. Type Host Speed USB 1.0 and 2.0 full-speed (12 Mb/s) SPG8000 Specifications and Performance Verification...

  • Page 17: Table 3: Power Characteristics

    Power supply load testing The backup supply will periodically be tested to insure it can support the instrument load should the primary supply fail. This load is approximately 55 watts and is applied for about 6 sec. SPG8000 Specifications and Performance Verification...

  • Page 18: Table 4: Black And Sine Outputs

    30 Ω for each output Output load 600 nominal, 150 min Timing adjust range ±1 half a frame for selected format Timing adjust resolution 10 μs steps Timecode offset range 24 hours Timecode offset resolution 1 frame SPG8000 Specifications and Performance Verification...

  • Page 19: Table 6: Genlock, Vitc And Ltc Input

    VITC conforming to the standard timing will be detected. VITC slightly outside the normal timing range may also be detected, but it must not run into burst or sync VITC – allowed video SNR VITC will be correctly decoded for signals with more than 30 dB SNR SPG8000 Specifications and Performance Verification...

  • Page 20: Table 7: Word Clock Output Specifications

    May be configured to be phased up with any of the three internal frame pulses Alignment to video, typical At default timing, a positive going Word Clock transition will align to the appropriate event in the selected video signal within ±1.0 μs Table 8: SPG8000 environmental characteristics Characteristic Description Temperature Operating 0 °C to +50 °C, with 15 °C/hour maximum gradient, noncondensing, derated 1 °C per 300 m...

  • Page 21: Table 9: Spg8000 Mechanical Characteristics

    Specifications Table 9: SPG8000 mechanical characteristics Characteristic Description Dimensions Height 44 mm (1.7 in) Width 483 mm (19 in) Depth 567 mm (22.3 in) Weight , net Approximately 6 kg (base unit only, without rack rail) SPG8000 Specifications and Performance Verification...

  • Page 22: Figure 1: Spg8000 Dimensions

    Typical packaged weight of product: 10.635 kg. Package dimensions 23 in. W x 30 in. L x 10.5 in. H Weight of the SPG8000 base unit varies depending on the number and type of modules installed. Figure 1: SPG8000 dimensions SPG8000 Specifications and Performance Verification...

  • Page 23: Option Bg Specifications

    Bi-Level Sync rise and fall time for Black and Composite outputs, typical 140 ns NTSC 250 ns Tri-Level Sync rise and fall time for 50 ns Black outputs, typical SCH phase accuracy 0° ± 5° Timing offset SPG8000 Specifications and Performance Verification...

  • Page 24: Option Ag Specifications

    Jitter <20 ns Rise and fall times 37 ps ±7 ps, 10 to 90% Measured from the 10% to 90% points. Timing Range ±160 ms relative to the selected video frame Timing Resolution 1 μs SPG8000 Specifications and Performance Verification...

  • Page 25: Option Sdi Specifications

    0.054 UI SD alignment jitter, typical SD timing jitter, typical 200 ps p-p 0.054 UI Return loss, typical ≥20 dB 5 MHz to 2.0 GHz ≥12 dB 2.0 GHz to 3 GHz Overshoot, typical ≤1% SPG8000 Specifications and Performance Verification...

  • Page 26: Table 13: Sdi7 Video Signal Content

    For 148 MHz Luma pixel rate signals, HAD = 16.66 ns. For 74 MHz Luma pixels rate signals, HAD = 33.33 ns. For SD signals at 13.5 MHz Luma pixel rate, HAD is 200 ns (2T5). SPG8000 Specifications and Performance Verification...

  • Page 27: Table 14: Sdi Embedded Audio And Ancillary Data

    Number of editable words in string indicated by DC value. User specifiable location (for example, HANC/VANC, line number) for this packet. Generator ancillary data SMPTE 352 Embedded Ancillary Data is placed on the video outputs as per SMPTE 425M. SPG8000 Specifications and Performance Verification...

  • Page 28: Table 15: Sdi7 Sd-525 (720 × 486)

    4:4:4 10b GBR+A 4:4:4 10b Table 21: SDI7 3G Level A (2K × 1080) (option 3G only) Structure 59.94i 60i 23.98p 24p 25p 29.97p 30p 50p 59.94p 60p 23.98psf 24psf 25psf 29.97psf 30psf 4:4:4 12b SPG8000 Specifications and Performance Verification...

  • Page 29: Table 22: Sdi7 3G Level B (1920 × 1080) (Option 3G Only)

    4:2:2 10b Table 25: SDI7 3G Level B (2xHD 1280 × 720) (option 3G only) Structure 59.94i 50i 60i 23.98p 24p 25p 29.97p 30p 50p 59.94p 60p 23.98psf 24psf 25psf 29.97psf 30psf 4:2:2 10b YCbCr SPG8000 Specifications and Performance Verification...

  • Page 30: Option Gps Specifications

    Location modes User may select “Fixed” or “Mobile”. “Fixed” stores a well-averaged position and then uses that until set to reacquire. “Mobile” (GPS mode only) recalculates the position continuously and thus has a higher timebase variation. SPG8000 Specifications and Performance Verification...
  • Page 31 For stay legal mode, limited to less than Fast Slew has limits of ±5 ppm offset and ±0.2 ppm frequency offset, and limited to (typical) 0.5 ppm / sec. change less than 0.02 ppm/sec. (GPS mode only) SPG8000 Specifications and Performance Verification...
  • Page 32 Instruments with earlier Option GPS modules can receive only GPS signals. Instruments with later Option GPS modules can receive both GPS and GLONASS signals. (See page 76, How to determine which GPS receiver is installed in your instrument.) SPG8000 Specifications and Performance Verification...

  • Page 33: Performance Verification

    Warm up The SPG8000 base unit and optional modules must have had a warm-up period of at least 20 minutes before you start a performance verification procedure. Refer to the documentation provided with the test equipment for any preparation the test equipment may require.
  • Page 34 Performance verification Rebooting in Factory Mode. Use these steps to reboot the SPG8000 in factory mode, without removing power to the instrument: 1. Press and hold the STATUS, ENTER, and Front Panel ENABLE buttons simultaneously. 2. Continue holding the buttons until the message SPG8000 Booting... displays.

  • Page 35: Diagnostics Tests

    PS2 (Option DPW only) Pass/Fail Power Supply 1 Pass/Fail Power Supply 2 (Option PDW only) Pass/Fail GPS PHS DET RAMPS (Option GPS only) Pass/Fail Module Memory Pass/Fail Front panel keys Pass/Fail PLL Range Pass/Fail Reference infrastructure Pass/Fail SPG8000 Specifications and Performance Verification...
  • Page 36 3. Record Pass in the test record if no error messages are displayed, or, to note a failure, record the error message. 4. Set the SPG8000 to Factory mode. (See page 19, Set SPG8000 to Factory Mode.) 5. Press the REF button.
  • Page 37 Record Pass or Fail in the test record: Main PS2 (Option PDW only) Power Supply 1: Verify temperature weighted hours (Tmp Wtd) and voltage (V) is normal (OK). Record Pass or Fail in the test record. SPG8000 Specifications and Performance Verification...
  • Page 38 Press the ENTER button to run the test. c. Verify that the GPS IO test passes. Record Pass or Fail in the test record. 16. Press the BACK button to exit the Run menu. SPG8000 Specifications and Performance Verification...
  • Page 39 Performance verification 17. Cycle the power to clear the effects of the memory diagnostics. 18. Set the SPG8000 to Factory mode and load the factory presets. (See page 19, Set SPG8000 to Factory Mode.) (See page 20, Load the factory preset.)

  • Page 40: Spg8000 Base Unit Performance Verification

    Performance verification SPG8000 base unit performance verification The following procedures verify the functionality of the SPG8000 base unit. Required equipment The following table lists the required equipment for these procedures. Table 29: Required equipment for SPG8000 base unit performance verification...

  • Page 41: Table 30: Spg8000 Base Unit Test Record

    Performance verification Test record Photocopy this table and use it to record the performance test results. Table 30: SPG8000 base unit test record Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: Performance test –Min +Max Measured...
  • Page 42 Performance verification Table 30: SPG8000 base unit test record (cont.) Performance test –Min +Max Measured Value Value Black output functional test and frame pulse test Black 1 Pass Fail 1080 59.94i Pass Fail 1080 60i Pass Fail Black 2 Pass Fail 1080 59.94i...
  • Page 43 Performance verification Table 30: SPG8000 base unit test record (cont.) Performance test –Min +Max Measured Value Value Black 3 – 40 mV + 40 mV 0 mV (offset) 700 mV Amplitude (difference) 693 mV 707 mV Trilevel Sync Output (HD)
  • Page 44 Performance verification Table 30: SPG8000 base unit test record (cont.) Performance test –Min +Max Measured Value Value LTC level LTC 1 Maximum positive voltage Maximum negative voltage p–p voltage (difference) 4.5 V 5.5 V LTC 2 Maximum positive voltage Maximum negative...

  • Page 45: Figure 2: Setup To Verify Clock Accuracy

    4. Set the frequency counter to the frequency measurement mode (if necessary), and then set the Gate Time to 1 s. 5. Set the reference source on the SPG8000 to Internal as follows: a. Press the REF button. b. Press the left (◄) arrow button until Internal appears in the menu, and then press the ENTER button.

  • Page 46: Figure 3: Setup For Genlock Test

    This test is divided into three parts: one part checks NTSC, one part checks PAL, and one part checks 1080p24. This test may be performed in normal or factory mode. (See page 19, Set SPG8000 to Factory Mode.) NTSC functional genlock and timing.
  • Page 47 In the timing display, make sure the "relative to" window indicates "Analog DAC". If it does not, press and hold the MEAS button and correct it. 7. Load the factory default preset for both the reference unit and the SPG8000 under test. (See page 20, Load the factory preset.) 8.
  • Page 48 ENTER button. Press the BACK button twice to exit the menu. 10. Set the reference format of the SPG8000 under test to NTSC Burst as follows: a. Press the REF button. You should see REFERENCE: SOURCE. b. Press the right (►) arrow button until you see NTSC Burst in the menu, and then press the ENTER button.
  • Page 49 ENTER button. Press the BACK button twice to exit the menu. 14. Set the reference format of the SPG8000 under test to PAL Burst as follows: a. Press the REF button. You should see REFERENCE: SOURCE. b. Press the right (►) arrow button until you see PAL Burst in the menu, and then press the ENTER button.
  • Page 50 Timing in the test record if all conditions are met. If any of these conditions are not met, record Fail. Check that the EXT light on the front panel of the SPG8000 under test is a steady green. Check that the Timing display on the waveform monitor reads 0 lines of offset and less than 0.1 μs of horizontal offset.
  • Page 51 Press the right (►) arrow button until HD Tri-Level SYNC appears, and then press the ENTER button. 21. Set the BLACK 1 output of the SPG8000 unit under test to 1080 24p Tri-level Sync as follows: a. Press the BLACK button until you see BLACK 1-3 : HD TRI-LEVEL SYNC RATE on the menu.

  • Page 52: Figure 4: Setup For Genlock Bit Integrity Test

    Timing in the test record if all conditions are met. If any of these conditions are not met, record Fail. Check that the EXT light on the front panel of the SPG8000 under test is a steady green. Check that the Timing display on the waveform monitor reads 0 lines of offset and less than 0.1 μs of horizontal offset.
  • Page 53 ENTER button. Press the BACK button twice to exit the menu. 3. Set the REF source of the SPG8000 under test to NTSC Burst as follows: a. Press the REF button. b. You should see SOURCE in the menu. If you do not, press the down (▼) arrow button until it appears.
  • Page 54 6. Press the down (▼) arrow button until you see GENLOCK INPUT in the Diagnostics menu. 7. Connect a 75 Ω terminator on the REF LOOP input on the SPG8000 under test. 8. Subtract the Min level from the Max level and compare the result to the limits in the test record.

  • Page 55: Figure 5: Setup For Ltc Input Gain And Impedance Test

    LTC positive and negative terminated inputs loop back gain. 12. Connect a breakout cable to the LTC / GPI input of the SPG8000 under test. Figure 5: Setup for LTC input gain and impedance test 13.

  • Page 56: Figure 6: Setup For Black Output And Frame Pulse Test

    You can use any HD signal. For example, HD 1080i59, 1080i50, or 1080p24. 2. Connect a cable from the BLACK 1 output on the SPG8000 under test to the external reference input of the video monitor, and terminate the loop through on the monitor with a 75 Ω...
  • Page 57 6. Check that the video monitor shows PAL as the reference input. 7. Record the result in the test record. 8. Set the BLACK 1 output of the SPG8000 under test to 1080 59.94i as follows: a. Press the BLACK button until you see BLACK 1-3 : HD TRI-LEVEL SYNC RATE on the menu.

  • Page 58: Figure 7: Setup For Black Output Bit Integrity Test

    This test should be performed in factory mode. (See page 19, test Set SPG8000 to Factory Mode.) 1. Connect a cable from the BLACK 1 output of the SPG8000 under test to the CMPST A input on the video monitor, and terminate the loopthrough with a 75 Ω terminator.

  • Page 59: Figure 8: Setup For Black Amplitude And Offset Test (Sd)

    4. Connect a 75 Ω BNC cable to the other end of the BNC T connector. 5. Connect the other end of the cable to the BLACK 1 output on the SPG8000. Figure 8: Setup for Black amplitude and offset test (SD)
  • Page 60 Write down the calibration setting (AMPL. DAC number) in case you need to restore it later. 10. Check that the calibration mode signal is 0 V on the SPG8000 display. This value is displayed in parentheses after the AMPL. DAC number.

  • Page 61: Figure 9: Setup For Trilevel Sync Output Test And Black Output Rise And Fall Time Test

    HD Trilevel sync signals are adjusted to within specification. This test should (HD) be performed in factory mode. (See page 19, Set SPG8000 to Factory Mode.) 1. Connect the BLACK 1 output of the SPG8000 to the oscilloscope and terminate the input with a 75 Ω...
  • Page 62 14. Set the vertical offset to 0 V and change the vertical gain to 100 mV/div. 15. Repeat steps 4 through 13 for the Black 2 and Black 3 outputs, making sure to move the cable to the connector of the output you are testing. SPG8000 Specifications and Performance Verification...
  • Page 63 Use the same setup as the previous test. (See Figure 9.) 1. Connect the BLACK 1 output of the SPG8000 to the oscilloscope and terminate the input with a 75 Ω feedthrough terminator. NOTE. Make sure that the oscilloscope input is set to 1 MΩ mode if you are using the feedthrough terminator.

  • Page 64: Figure 10: Setup For Sine Amplitude Test

    Sine amplitude test Perform this procedure to check the sine amplitude. 1. Connect the BLACK 3 output on the SPG8000 to the oscilloscope, and terminate the input with a 75 Ω feed-through terminator. Figure 10: Setup for sine amplitude test 2.

  • Page 65: Figure 11: Setup For Ltc Level Test

    Perform this test to check the LTC levels are within limits. This test should be performed in factory mode. (See page 19, Set SPG8000 to Factory Mode.) 1. Create an LTC load with voltmeter access by soldering a 600 Ω resistor to pins 2 and 3 of the female XLR connector.
  • Page 66 (◄) or right (►) arrow button until Black Burst appears, and then press the ENTER button. 3. Set the REF input of the SPG8000 under test to NTSC as follows: a. Press the REF button on the SPG8000. b. Press the up (▲) arrow button until you see SOURCE.

  • Page 67: Figure 12: Setup For Gpi Output Test

    Press the ENTER button. e. Check that the EXT indicator light on the front panel is green and stable. 4. Connect the GPI/LTC connector of the SPG8000 to the voltmeter as follows: a. Connect the BNC-to-Banana-plug adapter to the voltmeter.
  • Page 68 6. Check that the voltage on the GPI 1 output measures between 4.5 V and 5.5 V. 7. Record the result in the test record. 8. Disconnect the reference input to the SPG8000 under test. After 15 seconds, check that the GPI 1 output is below 0.5 V.
  • Page 69 This procedure checks that the GPI input is functioning correctly. If you have just completed the previous test, do the following: 1. Configure the GPI input of the SPG8000 to reset the program time: a. Press the SYSTEM button. b. Use the down (▼) arrow button to select GPI, and then press the ENTER button.

  • Page 70: Figure 13: Setup For Gpi Input Test

    4. Touch the wire from pin 9 to the chassis of the SPG8000. 5. Check that the display on the SPG8000 shows + Factory Check: Preset-1 +. 6. Record Pass or Fail for GPI recall of bit 1 in the test record.

  • Page 71: Figure 14: Setup For 48 Khz Clock Output Test

    75 Ω feed-through terminator 2.5 V DC coupled into 75 Ω. 1. On the SPG8000, set the Word Clock output to 5 V (DC): a. Press the AES button. b. Press the up (▲) arrow button until you see AES WORD CLOCK OUTPUT.
  • Page 72 4. Measure the low and high levels and record the results in the test record. 1 V AC coupled into 75 Ω. 5. On the SPG8000, set the Word Clock output to 1 V (AC): a. Press the AES button.

  • Page 73: Option Ag Performance Verification

    The following procedure verifies the functionality of the Option AG serial digital audio and silence outputs. NOTE. The procedure in this section only applies to SPG8000 instruments with Option AG installed. Required equipment The following table lists the required equipment for the following procedure.

  • Page 74: Table 32: Option Ag Test Record

    1100 mV 900 mV 1100 mV 900 mV 1100 mV DARS Output Level 900 mV 1100 mV AES/EBU Bar Graph Levels –20 dBfs –20 dBfs –20 dBfs –20 dBfs DARS Bar Graph Level Pass Fail SPG8000 Specifications and Performance Verification...

  • Page 75: Figure 15: Oscilloscope Setup For Serial Digital Audio Outputs Test

    AES/EBU output signal amplitude level. 1. Use the 75 Ω BNC cable and the 75 Ω feed-through terminator to connect the AES 1+2 connector on the SPG8000 to the oscilloscope CH1 input as shown in the following figure. Figure 15: Oscilloscope setup for serial digital audio outputs test...
  • Page 76 Change the BNC cable connection from the AES 7+8 connector to the DARS connector and record the measured value for DARS in the test record. 7. Change the BNC cable connection from the DARS connector to the AES 1+2 connector. SPG8000 Specifications and Performance Verification...

  • Page 77: Figure 16: Audio Monitor Setup For Serial Digital Audio Outputs Test

    12. Use the digital audio monitor to verify that the bar graphs show each channel at –20 dBfs for the remaining AES channels as follows: On the SPG8000, change the BNC cable connection from the AES 1+2 connector to the AES 3+4 connector and record the measured value for AES 3+4 in the test record.

  • Page 78: Option Bg Performance Verification

    The following procedures verify the functionality of the Option BG black generator outputs. NOTE. All of the procedures in this section only apply to SPG8000 instruments with Option BG installed. Required equipment The following table lists the required equipment for the following procedures.

  • Page 79: Table 34: Option Bg Test Record

    Sync Amplitude BLACK 4 0 mV (offset) –40 mV +40 mV 700 mV Amplitude 693.0 mV 707.0 mV (difference) BLACK 5 0 mV (offset) –40 mV +40 mV 700 mV Amplitude 693.0 mV 707.0 mV (difference) SPG8000 Specifications and Performance Verification...
  • Page 80 Composite Luma to Chroma Gain Match (Measured on PAL 75% Color Bars with 100% White) CMPST 1 Luma to Cyan bar match –6.7 mV +6.7 mV CMPST 2 Luma to Cyan bar match –6.7 mV +6.7 mV SPG8000 Specifications and Performance Verification...

  • Page 81: Figure 17: Setup For Tri-Level Sync And Black (Pal) Output Tests

    Figure 17: Setup for tri-level sync and black (PAL) output tests 2. Load the factory default preset. (See page 20, Load the factory preset.) 3. Select the 1080 59.94i HD sync signal for BLACK 4 output on the SPG8000 as follows: a.
  • Page 82 15. Set the vertical offset to 0 V and change the vertical gain to 50 mv/div. 16. Change the BNC cable connection from the BLACK 5 connector to the BLACK 4 connector on the SPG8000 and repeat steps 5 through 14. SPG8000 Specifications and Performance Verification...

  • Page 83: Figure 18: Setup For Black Amplitude And Offset Test (Sd) - Option Bg

    4. Connect a 75 Ω BNC cable to the other end of the BNC T connector. 5. Connect the other end of the cable to the BLACK 4 output on the SPG8000. Figure 18: Setup for Black amplitude and offset test (SD) – Option BG 6.

  • Page 84: Figure 19: Setup For Composite Offset And Gain Test

    4. Connect a 75 Ω BNC cable to the other end of the BNC T connector. 5. Connect the other end of the cable to the CMPST 1 output on the SPG8000. Figure 19: Setup for Composite offset and gain test 6.

  • Page 85: Figure 20: Setup For Luminance And Chrominance Test

    75 Ω BNC cable 75 Ω feed-through terminator 1. Use the 75 Ω BNC cable to connect the CMPST 1 connector on the SPG8000 to the CH 1 of the oscilloscope, as shown. 2. Connect the 75 Ω feed-through terminator to the loopthrough on the oscilloscope.
  • Page 86 6. Record the difference in the test record for Luma to Cyan bar match. 7. Change the BNC cable connection from the CMPST 1 connector on the SPG8000 to the CMPST 2 connector on the SPG8000 and repeat steps 5 through 6.

  • Page 87: Option Gps Performance Verification

    The following procedures verify the functionality of the Option GPS Synchronization connectors. NOTE. All of the procedures in this section only apply to SPG8000 instruments with Option GPS installed. Required equipment The following table lists the required equipment for the following procedure.
  • Page 88 (See page 76, How to determine which GPS receiver is installed in your instrument.) The type of GPS receiver in the reference system must match the type of GPS receiver in the DUT system. SPG8000 Specifications and Performance Verification...

  • Page 89: Table 36: Option Gps Test Record

    Frequency accuracy when locked to GPS or GLONASS Vector phase change – 38 ° + 38 ° Frame timing accuracy Timing – 0.185 μs + 0.185 μs Internal frequency – 2.5 e +2.5 e –6 –6 SPG8000 Specifications and Performance Verification...
  • Page 90 Be sure to perform the Common Diagnostics Tests before proceeding. (See page 21, Diagnostics tests.) You can perform performance verification procedures individually, if needed. Set to factory mode and 1. Change the instrument to factory mode. (See page 19, Set SPG8000 to Factory Mode.) load factory preset NOTE.

  • Page 91: Figure 21: Setup For Dc Antenna Output Power Voltage Test

    4. Connect the other end of the cable to the GPS ANT input on the rear of the SPG8000. Figure 21: Setup for DC antenna output power voltage test 5. Measure the voltage and record the value in the test record. SPG8000 Specifications and Performance Verification...
  • Page 92 Use the right (►) arrow button to select 5 Volt. b. Press the ENTER button. 13. Check that the voltmeter shows between 5 V and 6 V. 14. Record the result in the test record for the 5 V entry. SPG8000 Specifications and Performance Verification...
  • Page 93 BNC T and a precision terminator on the end of the cable to the antenna input. This will exceed the allowed current on the antenna. 11. Check that the antenna power LED on the SPG8000 rear panel is a steady red. This indicates a short circuit.

  • Page 94: Figure 22: Setup For The Gps Or Glonass Signal Lock From Antenna Test

    3. Connect one output of the splitter to the GPS or GLONASS antenna input of the reference unit and then power on the unit. 4. Connect the other output of the splitter to the GPS ANT input of the SPG8000 under test.
  • Page 95 Performance verification 5. If necessary on the SPG8000 under test, set the GPS Constellation type to GPS & GLONASS: NOTE. You need to perform the following step only if your Option GPS module can receive both GPS and GLONASS signals.
  • Page 96 40 to 80 range. 10. Record the signal quality of the reference unit in the test record. 11. Check that the signal quality on the SPG8000 under test is within 20 counts of the reference unit.

  • Page 97: Figure 23: Setup For Frequency Accuracy And Frame Timing Accuracy Tests

    GPS ANT connector of the SPG8000 under test. Figure 23: Setup for frequency accuracy and frame timing accuracy tests 2. Check that both the reference module and the SPG8000 under test have been on for 20 minutes to allow the ovens to warm up.
  • Page 98 QUALITY: 30.0 Sats: 4/4 readout. Check that the signal quality value is greater than 30 and that the number of satellites is above 4/4. 6. Check the value on the SPG8000 under test. A value of 30 or above is adequate.
  • Page 99 Performance verification 10. Set the BLACK 1 output on the SPG8000 unit under test to NTSC as follows: a. Press the BLACK button until you see BLACK 1: FORMAT on the menu. b. If you see NTSC on the display, press the ENTER button. If you do not see NTSC, press the right (►) arrow button until you do, and then press...

  • Page 100: Figure 24: Setup For Internal Frequency Calibration

    Check that Locked >>>> shows on the display. 6. Go to the diagnostics page on the SPG8000 under test and check that the system is in Fine mode as follows. If it is not, then allow it to warm up and stabilize.
  • Page 101 Performance verification 8. Check the Tune values. This is the amount that the SPG8000 is tuning to lock to the GPS or GLONASS signal. If this is more than ±0.1 e , then oven –6 calibration is recommended and you should proceed to step 8. Otherwise exit the procedure.

  • Page 102: Option Sdi And Option 3G Performance Verification

    The following procedures verify the functionality of the Option SDI connectors. NOTE. All of the procedures in this section only apply to SPG8000 instruments with Option SDI installed. Some steps have setups that depend on whether Option 3G is also installed.

  • Page 103: Table 38: Option Sdi Test Record

    Pass Fail +1.8 V Pass Fail Dref SRAM Memory Pass Fail Addr Bus Pass Fail Data Bus Pass Fail Memory Test DDR2 Memory Pass Fail Addr Bus Pass Fail Data Bus Pass Fail Memory Test SPG8000 Specifications and Performance Verification...
  • Page 104 1080 50p/ 1080 50i Signal 2B Pass Fail 1080 59.94p/ 1080 59.94i Jitter 0 ns 50 ps p-p 1080 59.94p/ 1080 59.94i Signal 2B Pass Fail 1080 24p Jitter 0 ns 50 ps p-p 1080 24p SPG8000 Specifications and Performance Verification...
  • Page 105 0 ps 135 ps Signal 1B Difference -50 ps +50 ps SDI Rise and Fall Rise time 400 ps 1000 ps Time (SD) Fall time 400 ps 1000 ps Signal 1B Difference -500 ps +500 ps SPG8000 Specifications and Performance Verification...
  • Page 106 0 ps 135 ps Signal 2B Difference -50 ps +50 ps SDI Rise and Fall Rise time 400 ps 1000 ps Time (SD) Fall time 400 ps 1000 ps Signal 2B Difference -500 ps +500 ps SPG8000 Specifications and Performance Verification...
  • Page 107 Some of the SDI diagnostics are available only when the instrument is in factory mode. 1. Change the instrument to factory mode. (See page 19, Set SPG8000 to Factory Mode.) 2. Load the factory default preset. (See page 20, Load the factory preset.) 3.
  • Page 108 29. Press the BACK button to exit the DIAGNOSTICS submenu. Exit factory mode. Exit the factory mode to recover from the memory tests before continuing with the next verification steps: 30. Remove and then reattach the power cord to restart the SPG8000. SPG8000 Specifications and Performance Verification...

  • Page 109: Figure 25: Setup For Output And Jitter Test

    Performance verification Output functional and jitter 1. Connect a 1 m cable from the SDI 1A output on the SPG8000 under test to the SDI A input of a WFM8300 with Options 3G and PHY. test Figure 25: Setup for output and jitter test 2.
  • Page 110 Performance verification 10. Set the test signal on the SPG8000 to 75% Color Bars (75% White) as follows: a. Press the down (▼) arrow button until you see TEST SIGNAL in the menu, and then press the ENTER button. b. Press the right (►) arrow button until you see 75% Color Bars (75% White).

  • Page 111: Figure 26: Setup For Reference Against The Dmm

    5. Check that the output of the AFG3101 is On. 6. Set the DMM to measure AC voltage using a medium filter setting. Set the range to allow for four digits of RMS amplitude. 7. Record the DMM measurement in the test record. SPG8000 Specifications and Performance Verification...

  • Page 112: Figure 27: Set Up The Digital Signal Analyzer

    4. Install the TCA-BNC into the right port of the 80A03. Figure 27: Set up the digital signal analyzer 5. If needed, press the Default Settings button on the oscilloscope. 6. Press the Channel 1 button on the 80E04 sampling head to activate Channel 1. SPG8000 Specifications and Performance Verification...

  • Page 113: Figure 28: Setup For Characterization Of The Test System

    Cycle RMS. 13. On the oscilloscope, select measurement 2 and then pulse amplitude and select it to measure Cycle Mean. 14. Record the Cycle RMS and Cycle Mean values in the test record. SPG8000 Specifications and Performance Verification...
  • Page 114 On the oscilloscope, press the SETUP DIALOG button. b. Select the “Vert” tab from the top of the setup page. c. Select the “External Attenuation” box, and then enter the attenuation factor calculated in step 17 above. SPG8000 Specifications and Performance Verification...

  • Page 115: Figure 29: Setup For Sdi Output Amplitude Test

    TCA75 BNC on the oscilloscope adapter. Figure 29: Setup for SDI output amplitude test 3. Set the SDI calibration signal for SDI 1A to 20 bits square on the SPG8000 as follows: a. Press the SDI button on the SPG8000.
  • Page 116 15. If you are performing the verification procedures in order, you can skip forward to step 1 of the SDI rise and fall time test. Otherwise, proceed to the next step. 16. Exit factory mode by removing and then reattaching the power cord to restart the SPG8000. SPG8000 Specifications and Performance Verification...
  • Page 117 2. Connect a cable from the SDI 1A output of SPG8000 to the TCA75 BNC on the oscilloscope adapter. 3. Set the SDI calibration signal for SDI 1A to 20 bits square on the SPG8000 as follows: a. Press the SDI button on the SPG8000.
  • Page 118 26. Repeat step 24 for the SDI 1B connector. 27. Repeat steps 21 - 26 for the SDI 2A and SDI 2B connectors. Exit factory mode. Exit the factory mode. 28. Remove and then reattach the power cord to restart the SPG8000. SPG8000 Specifications and Performance Verification...

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