The Telestream ECO8000-HREF offers the option to add three 3 GHz Relay Switch Channels to the ECO8000 ECO Automatic Changeover Units. While these channels are optimized for SD, HD, or 3G-SDI signals, they are also usable for most reference signals. These channels utilize high bandwidth latching relays to preserve the selected signal path upon a loss of power.

The Relay Check function comes standard with all 3 GHz Relay Switch Channels. This function, when enabled, has the instrument automatically check the signal level on each channel before and after every changeover switch in order to determine the condition of the relay contacts of these channels. If the instrument determines that the relay contacts may have nonconductive coating, such as oxide, buildup, the instrument will cycle the relay rapidly up to 20 times. This cycle will wear through the layer of nonconductive coating in an attempt to restore the relay connections as a relay self-cleaning attempt.

This option is factory-installed and must be purchased with the ECO8000 ECO Automatic Changeover Unit.

• Addition compatible with ECO8000 ECO Automatic Changeover Units
• Factory-installed option, must be purchased with ECO8000
• Adds 3x 3 GHz Relay Switch channels (3G-SDI, HD-SDI, SD-SDI) to unit
• Can be combined with additional REF/HREF option (not included)
• Optimized for SD/HD/3G-SDI signals, usable for most reference signals
• Utilizes high bandwidth latching relays to preserve selected signal path upon power loss
• Equipped with 'Relay Check' function for checking signal level on each channel before/after changeover switch
• Determines condition of relay contacts of channels
• 'Relay Check' function sends signal to unit to clean relay connections
• Cycles relay rapidly 20x to wear through layer of nonconductive coating buildup if necessary

Specifications (3 GHz Relay Switch Channels)

• Typical Return Loss: 300 kHz to 6 MHz (40 dB), 6 MHz to 30 MHz (30 dB), 30 MHz to 1.5 GHz (15 dB), 1.5 GHz to 3 GHz (10 dB)
• Insertion Loss: Less than -0.1 dB DC to 10 MHz, typical less than -3 dB DC to 3 GHz, equivalent to ~5m of Belden 1694 cable
• Maximum Switched Voltage: ±2.5V peak, 1.5VRMS
• Maximum Switched Current: 100 mA
• Crosstalk: DC to 1.5 GHz (-48 dB), 1.5 GHz to 3 GHz (-40 dB)
• Relay Switch Interruption Time: ~0.5 ms to 2 ms
• Preset Threshold Signal Types: NTSC, PAL, Tri-Level, AES, 1V Word Clock, SD-SDI, HD-SDI, 3G-SDI, Custom