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Video, Interface > Video > Miscellaneous Video Settings, Medium, Interfaces > Video

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Figure 7-5 Keyboard/Mouse Settings Page B 7: Interfaces Video The Spider device works by capturing and digitizing the analog video coming from the attached computer. This analog video may have more or less low-level electrical noise present, depending on the nature of the video card or embedded video controller. When viewed on a monitor, this noise (if random) is invisible as the display is being redrawn 60 to 100 times a second. Inside the Spider device, however, the algorithm sees that noise as something changing on the screen, so that requires sending off an update to the client system. This can result in a constant stream of data even when the image on the target computer's screen is not moving. In order to avoid this, at Interface > Video > Miscellaneous Video Settings the Spider device has a selection for noise filter. The larger filter openings will filter out more of the noise, at the cost of potentially missing small incremental changes and seeing some compression artifacts (blocky-ness). Filter settings of Medium or High will work for most applications. Be sure to try the Remote Console Auto Adjust Video button a few times before deciding that a constant stream of data represents electrical noise requiring a larger filter setting. To modify video settings, perform the followings steps. 1. Click Interfaces > Video. The Miscellaneous Video Settings page displays. Spider™ and SpiderDuo® KVM-over-IP Device User Guide 68

Section	Page
Spider and SpiderDuo KVM-over-IP Device User Guide	1
Copyright and Trademark	2
LINUX GPL Compliance	2
Warranty	2
Contacts	2
Sales Offices	2
Disclaimer and Revisions	3
Documentation Changes	3
Revision History	3
Table of Contents	4
List of Figures	10
List of Tables	12
1: About This Guide	13
Chapter and Appendix Summaries	13
Conventions	14
Additional Documentation	15
2: Overview	16
Spider Overview	16
Features	16
Functionality	17
System Configuration and Cables	17
Technical Specifications	19
SpiderDuo Overview	20
Features	20
Functionality	20
System Configuration and Cables	21
Technical Specifications	22
Product Information Label	23
3: Installing the Spider Device	25
Package Contents	25
Installing the Spider	25
Detector Installation and IP Address Reset	28
Target Computer Setup	30
Video Resolutions and Refresh Rates Configuration	31
Mouse-to-Cursor Synchronization	31
Telnet/SSH Connections to Serial Ports	32
Cable Connections for KVM and USB	32
Device Failure or Cable Break in the Daisy Chain	32
Client Server Setup	33
Network Environment	33
Spider Power	33
4: Installing the SpiderDuo Device	34
Package Contents	34
Installing the SpiderDuo	34
Detector Installation and IP Address Reset	37
Target Computer Setup	39
Video Resolutions and Refresh Rates Configuration	40
Mouse-to-Cursor Synchronization	40
Telnet/SSH Connections to Serial Ports	41
Cable Connections for KVM and USB	41
Power Sequencing	41
Client Server Setup	41
Network Environment	42
PCU Power	43
5: Web Browser Access	45
Accessing the KVM Console	45
6: Remote System Control	46
Overview	46
Remote Console Window	46
Main Viewport and Scroll Bars	47
Button Keys	47
Toolbar	47
Options	48
Information Bar - Connection	48
Information Bar - Resolution	48
Information Bar - Network Traffic	48
Concurrent Access State	48
Monitor Only State	48
Exclusive Access	48
Basic Remote Console Operation	49
Auto Video Adjustment	50
Screen Display Adjustments	50
Fast Sync and Intelligent Sync	50
Single and Double Mouse Modes	50
Local Cursor	50
Optimizing Video	51
Auto and Manual Video Adjustment	51
Clock and Phase	51
Video Encoding	51
Scaling Target Video to Client Resolution	52
Keyboard Functions	52
Soft Keyboard	52
Local Keyboard	52
Hotkeys	52
Other Remote Console Functions	53
Monitor Only	53
Exclusive Access	53
Screenshot to Clipboard	53
Refresh Video	53
Telnet/SSH	53
Set up and Enable	53
Passthrough Use	54
Telnet Console Use	54
7: Interfaces	56
Network Settings	56
Network Basic Settings	57
Lan Interface Settings	58
IPv6 Settings (Firmware v3.0 or higher)	58
Miscellaneous Network Settings	58
Serial Port Settings	60
KVM Console Settings	61
KVM Console Settings	62
Transmission Encoding	63
KVM Console Type	63
KVM Console Deployment	63
Miscellaneous KVM Console Settings	63
Mouse Hotkey	64
KVM Console Virtual Keys	64
Keyboard/Mouse	65
Keyboard/Mouse Settings	66
Keyboard Model	66
Key Release Timeout	66
Country Code	66
USB Mouse Type	67
Mouse Speed	67
Video	68
Virtual Media	69
Virtual Media Active Image	70
Drive Redirection	70
Virtual Media Options	71
Image on Windows Share	71
Floppy Image	72
Connecting to a Redirected Drive	73
User Interface Settings	75
8: User Accounts	76
Local vs. Remote Authentication	76
Local User Management	76
Modifying Passwords	76
User and Group Management	77
User Management	78
Group Management	79
User Permissions	79
Remote Authentication	80
LDAP	81
RADIUS	82
9: Services	83
Date/Time	83
Security	84
HTTP Encryption	85
Login Limitations	85
KVM Encryption	85
Group Based System Access Control	86
Authentication Limitation	86
Certificate	87
Event Log	89
Event Log Targets	89
Event Log Assignments	90
SNMP	90
KVM Search	92
Power Management	93
SpiderDuo Power Control Unit	94
Wake-On LAN	94
Enable WOL	95
Remove Entries, Reset to Defaults, or Reset	95
10: Maintenance	96
Device Status	96
Configuration	97
Update Firmware	99
View Event Log	99
Unit Reset	100
iGoogle Gadgets	101
11: Command Reference	104
Command Syntax	104
Command Help	105
Tips	105
Configuration Commands	105
Connect Commands	107
User Group Commands	112
OEM Customization Commands	115
Power Commands	115
Serial Port Commands	116
WOL (Wake on LAN) Commands	116
USB Host Disk Commands	117
Reboot Commands	118
Diagnostic Commands	118
Group Permissions	118
Appendix A: Troubleshooting	120
Appendix B: Virtual Media Example	122
Goal	122
Step 1 – Prepare the VM Server	122
Step 2 – Enable Virtual Media	123
Step 3 – Use the Virtual Media	125
Appendix C: Supported Resolutions and Refresh Rates	127
Appendix D: Mounting Bracket Kit	128
Appendix E: PCU Safety Information	130
Cover	130
Power Plug	130
Input Supply	130
Grounding	130
Fuses	130
Appendix F: Technical Support	131
Technical Support US	131
Technical Support Europe, Middle East, Africa	131

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7: Interfaces

Spider™ and SpiderDuo® KVM-over-IP Device User Guide

Figure 7-5

Keyboard/Mouse Settings Page B

Video

The Spider device works by capturing and digitizing the analog video coming from the attached

computer. This analog video may have more or less low-level electrical noise present, depending

on the nature of the video card or embedded video controller.

When viewed on a monitor, this noise (if random) is invisible as the display is being redrawn 60 to

100 times a second. Inside the Spider device, however, the algorithm sees that noise as

something changing on the screen, so that requires sending off an update to the client system.

This can result in a constant stream of data even when the image on the target computer’s screen

is not moving. In order to avoid this, at

Interface > Video > Miscellaneous Video Settings

the

Spider device has a selection for noise filter. The larger filter openings will filter out more of the

noise, at the cost of potentially missing small incremental changes and seeing some compression

artifacts (blocky-ness). Filter settings of

Medium

High

will work for most applications. Be sure

to try the Remote Console Auto Adjust Video button a few times before deciding that a constant

stream of data represents electrical noise requiring a larger filter setting.

To modify video settings, perform the followings steps.

Click

Interfaces > Video

. The Miscellaneous Video Settings page displays.