Transcript
RSS6-T RF Channel & Broadband Automatic Switching Station
[email protected] www.tekronsystems.com
1/7
INTRODUCTION The RSS6-T is designed for the redundancy of analog and QAM RF channels, as well as CATV Broadband feeds in Headend and Hub sites. The RSS automatic switching station incorporates six (6) independent A/B switches. Each switch module monitors independently the main & backup input feeds for its automatic switching operation and for remote status monitoring & alarming over TCP/IP Networks. The RSS6-T automatic switch covers a wide input RF level range and incorporates front panel Threshold adjustment for each input being monitored. It can be used to monitor feeds before or after Broadband amplifiers, after Fiber receiver, or monitor a single TV channel or QAM channel in the 5 MHz to 1GHz CATV Band. Because it continuously monitor the main and backup inputs, it will only switch to the backup input feed when the RF level of that input is present and above its threshold setting. The RSS6-T incorporates front-panel switch override capability as well as indication of switch position & level status. An Ethernet/IP port is available for remote monitoring, alarm and control of the RSS station via SNMP protocol & Web-page. A serial port is also available for connection to modem for dial-up DTMF-tone (phone) switch control in emergency situations. The remote control of the switch overrides in this case, the RSS switch automatic operation as well as the front panel toggle switch. Optional back-chassis terminal connections are also available for local/remote monitoring and switch control via contact closure.
Other RSS models are also offered for automatic switching applications in the Headend and remote Hub sites for the redundancy of: • Analog & Digital video/audio channels • DVB-ASI & SDI Digital TV Channel feeds • Split-Band RF-Broadband feeds • RF Broadband feeds • L-Band (LNB) Broadband feeds Tekron Communication is specialized and offers solutions to Remote Site Switching Monitoring & Remote Control (SMC) applications in CATV Headend/Hub sites and Broadcast transmission sites. A short list of available models can be found on the last page.
2/7
INPUT SWITCH OPTIONS: RF sensing & Threshold switch adjustment: Front panel fine adjustment available to set the level at which each module automatically switches. The threshold level of the main and the backup inputs are separately adjusted. Fail-safe during power loss: On power loss, the switches in the RSS6-T will switch back or remain switched in the main input to pass it without service interruption. Disabling switch back to main input: In normal condition, the sensing mechanism automatically switches to the back-up input when the main input drops to a level to a critical pre-set (threshold) level and returns to the main input when level of the main input is restored, with a built-in Hysteresis between switchover and switch back. Automatic switch back to the main input of each switch module can however be remotely disabled over the Network from the Web-page or via SNMP. This is intended to prevent excessive switching when an intermittent problem is encountered, to allow technical staff to investigate the cause of the problem before returning the switch (front-panel, remotely over IP or over dial-up) back to its normal automatic operation. Ignore input-B status during automatic switching: Each of the six (6) switches can be set separately remotely (over IP from Web-page & SNMP, or over dial-up) to disable effect of input-B status on automatic switching. In this case, input continues to be monitored to indicate its status and send (SNMP & email) alarms on drop of level below Threshold. IN normal operation when input-B is in alarm condition, it prevents the switch from automatically switching to this backup input. Manual Control: A front panel 3-way toggle switch allows the technical staff at the Headend to disable the switch automatic operation and select the main or backup input. LED status indicators will show if the unit is in manual or automatic mode and whether it is in the main default or backup position. Remote Control: TCP//IP and RS-232 ports are available at the back for remote override and control of each of the six (6) switch modules housed in the chassis. OUTPUT CONTROL OPTIONS: Local Status Monitoring: Front panel LED are available to indicate status of the main & backup inputs, switch position and if switch is in automatic or override mode. Remote Monitoring & Alarm: An Integrated Ethernet/IP port is available for: - Status monitoring & switch control from the Web-page using Web-Browser. - Alarm, Status monitoring and switch control via SNMP protocol. - Alarm via email text-alert messaging. - Switch control over a dial-up line and Ethernet Network. Remote dialup & IP access can also disable/enable automatic return & ignore input-B. OPTIONS: Switch delay: Fixed (2-second) delay before switching can be factory set, with internal jumper setting to disable or enable it. U.P.S.: An optional (18 - 24 volt) AC/DC input socket can be provided as backup to maintain unit operational during main AC-power failure. NEG power supply: The RSS6-T can be supplied with NEG 48V DC internal supply.
3/7
GENERAL SPECIFICATIONS
CHASSIS ¾ 19" 2U-high rack-mount chassis ¾ 85-235Volt AC or NEG48 Volt-DC supply input, with optional Dual Redundant Power (DRP) with alarm ¾ Houses six (6) independent A/B automatic switches FRONT PANEL ¾ Input selection 3-way locking toggle switch Overrides the switch automatic operation for manual switch control • Middle position - Automatic operation • A or B position - Selects A or B inputs in manual control mode ¾ Switch and manual override status • Switch status - GREEN main input and RED backup input • Operating mode - Yellow=manual and OFF=automatic mode ¾ Input presence status • GREEN – Monitored signal above Threshold level • RED – Monitored signal below Threshold level BACK PANEL ¾ F-connectors (per switch module) (2) RF-inputs (75-ohm) (1) RF-output (75-ohm) ¾ RJ-45 Connector TCP/IP Ethernet Network Port ¾ DB-9 Connector (optional modem) For dial-in DTMF-tone phone-control of the switch in emergency situations. AUTOMATIC SWITCHING ¾
Local Settings: • Front panel Threshold adjustment of monitored main & backup inputs
¾
Remote Settings: • Web-page adjustable Hysteresis between switchover & switch back • To disable/enable automatic switch return to main input • To disable/enable input-B monitoring from affecting automatic switching
4/7
RF BROADBAND AUTOMATIC REDUNDANCY SWITCH SPECIFICATIONS The RSS6-T incorporates six (6) independent switches with the following specifications:
Switch:
Two inputs to one output, 75-ohm with F-connectors Unselected input is internally 75-ohm terminated
Frequency Range:
5-1000 MHz
Nominal Level Input: Typical +25dBmv to +60dBmv operation Insertion Loss:
1dB (±0.25) Flat from 5MHz to 1000MHz
Return Loss:
Better than 20dB 5MHz to 1000MHz
Isolation:
70dB minimum 5-1000MHz between inputs & output
Monitoring:
Separate & continuous of main & backup input levels for automatic switching and alarm over IP-Networks
Switch Threshold:
35dB front panel adjustable range separate for each input
Switching Hysteresis: Adjustable over IP, designed to protect against flutter Fail-safe:
Switches and passes the main input on power loss
Switch Control:
- TCP/IP Network via SNMP and from Web-page - Front locking toggle override switch for manual control
Monitor & Alarm:
- Ethernet/IP Network Web-page, SNMP and Email-alert - Front panel LED's & back-chassis plug-in connections to indicate switch and RF input level status
Remote Settings:
- Web-page change of switch default settings to disable automatic switch return and backup input monitoring - Hysteresis and delays before switching
Chassis & Supply:
19" Rack-mount 1-U high with 85-235 Volt AC input
Power supply options: NEG 48 VOLT DC internal power supply Dual Redundant Power AC/AC, DC/DC or AC/DC
5/7
REMOTE NETWORK WEB-PAGE MONITOR and CONTROL
6/7
CATV HEADEND & HUB SITE AUTOMATIC REDUNDANCY PRODUCTS Tekron Communication Systems is focused on providing innovative solutions to TV and FM signal and RF Broadband feed Switching, Monitoring, and Control in remote CATV Headend & Broadcast transmission sites. All of Tekron RMS Monitor-n-alarm, RSS automatic switching and MX scheduled-n-controlled switching products and systems, are Network enabled with SNMP and Web-interface for remote monitoring, alarm and control.
Automatic switching for Channel & Broadband Feed Redundancy Applications Digital ASI-SDI-SMPTE310M Channels RSS1-ASI Dual-output ASI automatic switch, for the redundancy of the local Broadcast channels received from studio. RSS-2ASI Dual ASI automatic switching station, for the redundancy of the local Broadcast channels received from studio. RSS-6ASI Six (2X1) ASI/SDI automatic switching station, for redundancy of local Broadcast channels received from studio. Digital/Analog Video-Audio Channels RSS-2B 3X1 Video/Stereo-audio +SAP automatic switch. RSS-2B4.5 Dual (2X1) Video/4.5-audio automatic switching station. RSS-2AS 3X1 stereo audio automatic switch c/w internal audio generator. RSS-4Eng 5X1 Video/Stereo-audio automatic switch with internal generator. RSS-3RV Triple (2X1) RF Broadband redundancy switching station that monitors main input Video for RF channel automatic switching. RSS-2AV Dual (2X1) Video/Stereo-audio +SAP automatic switching station. RSS-6AV Six (6X1) Video/Stereo-audio +SAP automatic switching station. L-Band / LNB Feed RSS-2L Dual L-Band automatic switching station, for the redundancy of the Horizontal & Vertical LNB feeds from the same chassis. RSS-6L Six (2X1) L-Band automatic switching station, for redundancy farm satellite dish LNB feeds and L-Band Fiber transport links. CATV RF Channel and Broadband Feed RMS-2RC RF-PILOT Redundancy Broadband automatic switching station. RSS-2R CATV Broadband automatic switch, for Hub site transport feed redundancy. RSS-2D CATV Split-Band automatic switch, for Hub site transport feed redundancy. RSS-3T CATV Broadband Triple A/B automatic switching station, for Headend multiple Broadband amplifier and Buffer redundancy. RSS6-T CATV Broadband six (6) A/B automatic switching station, for Headend multiple QAM Channel, Broadband, amplifier and Buffer redundancy.
7/7
