evertz XRF6 - Input Descriptions; Input Gain Stage Mode; Input Gain Stage Target Power Level; Input Gain Stage Manual Gain Amount

XRF6 RF Router Manual
CONFIGURATION Revision 1.0 Page 3-5
3.3.1.2. Input Descriptions
The default names (Input 1, Input 2…) may be changed to better correspond to the RF signal to which
they are connected. The input descriptions are used by control system interfaces such as control panels
or VistaLINK
®
interfaces, thus providing a more familiar control interface for the user.
3.3.1.3. Input Gain Stage Mode
Each input may be set to either manual or automatic gain control (AGC) mode. In manual mode, the gain
through the system on a particular input is fixed, and user specified (0 dB is the default). In automatic gain
control (AGC) mode, the input through the system on a particular input is fixed, to a user selected target
output level (-20 dBm is the default). The AGC maintains the output level if the input level is within the
range determined by the AGC output level and the available gain in AGC mode.
3.3.1.4. Input Gain Stage Target Power Level
In AGC mode, each input has a target power output level, as seen by all outputs connected to that input.
The target power default is –20 dBm, but can be set from –20 dBm to –50dBm. The target output level is
maintained, if the input level is within the range determined by the AGC output level and the available gain
in AGC mode.
3.3.1.5. Input Gain Stage Manual Gain Amount
In manual gain mode, the gain through the router for all outputs connected to a particular input is fixed.
The default value for all inputs is 0dB, with an adjustable gain range of -6 / +20 dB.
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Regardless of the manual gain setting, the output of the router is limited to –10dBm.
If a high level input signal (i.e. –10 dBm) is set to full gain of +20 dB, the output level on any connected
inputs will be exceeding design limits. Significant distortion to the RF signal may occur under these
circumstances.
3.3.1.6. Input Upper And Lower Threshold Power Level
Each input contains an input power monitor that is capable of sending an alarm (SNMP trap) if the input
RF signal power is out of range. These settings allow the user to adjust the acceptable input RF signal
power upper and lower thresholds. If the RF signal input power goes outside of this range, an alarm is
generated.
3.3.1.7. Input Squelch Threshold Power Level
Each input has an input squelch circuit that mutes the input when no signal is present. This command
allows the user to set the power level of the squelch circuit for each input. Below the set input power level,
the input squelch circuit will mute the input.
3.3.1.8. Input Squelch Enable
This command allows the squelch function to be enabled or disabled on each input.
3.3.1.9. Current Input Power Level
This command generates a list of the current RF signal power present on each input.