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Summary of Contents for Polycom HDX 4500
- Page 1 APPENDIX 11/04 TEST RESULTS FOR POLYCOM® HDX 4500 Manufacturer: Polycom® Model: HDX 4500 Software Version: 3.0.3-14451 Optional Features and 1080p Resolution Modifications: 14th – 18th November 2011 Date of Test: System front view...
- Page 2 HD Camera Control Panel...
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Page 3: Table Of Contents
C O N T E N T S Page No. A: INTRODUCTION ............1 B: SETUP PROCEDURE ............2 C: HARDWARE DESCRIPTION …..........2 D: SYSTEM OPERATION ............7 E: VIDEO TESTS SUMMARY ..........11 AUDIO TESTS SUMMARY ...........11 G: DATA TESTS ..............11 H: CONNECTIVITY ..............11 Appendix 1 Detailed Physical Information ........14 Appendix 2 Detailed Video Tests …………........15... -
Page 4: A: Introduction
INTRODUCTION The Polycom® HDX 4500 is a self contained desktop High Definition (HD) videoconferencing system with a maximum picture resolution of 1920 x 1080 pixels (1080p) at 30fps. It is the highest specification model in Polycoms HDX 4000 series of conferencing solutions. The system comprises a 24‖ picture monitor, CODEC, camera, microphones and loudspeakers integrated into a single desktop unit. -
Page 5: B: Setup Procedure
Setup, Quick Start, User‘s and Administrator guides. HARDWARE DESCRIPTION HDX 4500 System The HDX 4500 systems supplied for evaluation had a maximum call bandwidth of 4 Mbit/s and included the 1080p (30fps) option. The CODEC offers several video resolutions including: 352 x 240 pixels... - Page 6 To maintain picture sharpness (resolution) at the lower connection bandwidths the frame rate was reduced as movement increased within the image The HDX 4500 CODEC supports both single and dual monitor modes. When multiple images are displayed on a single monitor only Picture outside Picture (POP) is displayed, Picture in Picture (PIP) is not available.
- Page 7 Point to Point Call, Picture outside Picture (POP) no content, near and far sites side by side This image clearly shows the screen reflections Point to Point Call, Picture outside Picture (POP) no content, far site large, small near site.
- Page 8 When Content is displayed, a small image of the far end conference participants appears alongside the larger Content image, layouts may be altered using the Layout button. Content transmitted or received Content big, far site small Content big, near site small Content and far site, same size, side by side Content, full screen Point to Point Call, Picture outside Picture (POP) with 16x9 Content...
- Page 9 Far site full screen Content full screen The Polycom® high definition camera has a native resolution of 1920 x 1080 (1080p) it has a fixed focus lens and tilts with the monitor adjustment. A 2x digital zoom is available but unlike an optical zoom its use just degrades the image. A manual privacy shutter control is provided above the camera.
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Page 10: D: System Operation
PC image is previewed its associated audio is only heard at the local site. Echo cancellation is appropriately disabled on this input. System control is normally through the wired remote but if preferred a Polycom standard infra red control may be used. Remote configuration is another option via a web browser from a network connected PC. - Page 11 Successful H.239 conferences were established in both directions between HDX systems and with other manufacturers‘ CODECs for both high and ordinary definition conferences. The HDX 4500 CODEC supports remote camera control. The system takes just over two minutes to boot up from cold, when not in a call the system automatically reverts to sleep mode after a user definable period.
- Page 12 Web Interface Screen Shots: Call Status System Configuration Screen shots of the transmitted and received images are also available from the web interface using either ―Remote Monitoring‖ which provides snapshots of the near and far video images or ―Web Director‖ which provides additional CODEC control as well as participant screenshots.
- Page 13 Remote Monitoring Web Director Screenshots reproduced by permission of Polycom®...
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Page 14: E: Video Tests Summary
High Definition Image Quality Unfortunately, during testing the cameras at both sites appeared to have faults that limited the image quality. In calls between HDX 4500 systems one camera produced soft focus images with a very limited depth of field. The other camera... - Page 15 H.239, presentation material was also shared. CODEC Call Resolution Resolution Model and Software Bandwidth Transmitted by Received by Version the HDX 4500 the HDX 4500 Polycom PVX 1.5 Mbit/s 352 x 288 320 x 240 S/W 8.0 Polycom® VSX7000 2 Mbit/s 352 x 288 352 x 288 S/W 9.0.5.1...
- Page 16 Resolution in pixels and their common designation: 1920 x 1080 1080p 1280 x 720 720p 1024 x 576 W4CIF 704 x 576 4CIF 576 x 448 448p 512 x 288 WCIF 352 x 288 352 x 240 320 x 240 QVGA Connectivity with Janet Videoconferencing Switching Service (JVCSS) The HDX connected to the Codian MCU using H.264 Video and G.722.1 audio in...
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Page 17: Appendix 1 Detailed Physical Information
1 off 3.6 metre RJ45-RJ45 network cable 1 off IEC power cord Mobility The Polycom® HDX 4500 system can be moved easily. To establish a connection, each new location will need the local area network information re-entered into the configuration menu. -
Page 18: Appendix 2 Detailed Video Tests
Appendix 2 Detailed Video Tests The HDX system supports, H.261, H.263, H.263+ and H.264, but these protocols are automatically selected. In calls between HDX units only the default protocol H.264 could be tested as this was the one negotiated by the CODECs For the following tests using the DVI input and with the PC input set to People and Sharpness, the video resolution between HDX systems was 4SIF at 384Kbit/s rising to 720p at all other connection speeds... - Page 19 14.Cut tests, scenes various with camera movements 21.00 - 22.00 15.Man teaching at whiteboard 22.10 - 23.23 (Insert 75% EBU bars at local site, measure at remote site) Test 1 (H264): Colour bar test (Insert 75% EBU bars at local site, measure at remote site) Subjective Impairments H.323 384 kbit/s 768 kbit/s...
- Page 20 Test 6 (H.264): Close up head (nodding) Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 7 (H.264): Close up head (shaking side to side) Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 8 (H.264): Medium close up, slow zoom out to three shot Subjective Impairments H.323 384 kbit/s 768 kbit/s...
- Page 21 Test 10c (H.264): Turntable speed 3 Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 10d (H.264): Turntable speed 4 Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 11 (H.264): Football sequence Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s...
- Page 22 Test 14 (H.264): Video with several vision cuts Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 15 (H.264): Man teaching with flip chart Subjective Impairments H.323 384 kbit/s 768 kbit/s 2.0 Mbit/s 4.0 Mbit/s Test 16 Playback from a domestic VHS videotape player As there is no analogue video input this test could not be carried out.
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Page 23: Appendix 3 Detailed Audio Tests
Appendix 3 Detailed Audio Tests Note: In tests between HDX 4500 units it was not possible to select audio protocols so only a limited range could be tested. Test 1: Frequency response (-3 dB) (Insert -6 dB signal at local site, measure at remote site)
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