evertz XRF1, Руководство пользователя, Страница: 22 / 60

XRF1/XRF1A 16x16 RF Router Manual
XRF1 - 3-6
Revision 1.2
SERIAL PORT
3.5.11. Manual Gain Level
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 -9 to +18 dB on the XRF1, or –10 to
+12 dB on the XRF1A.
If a high level input signal (i.e. greater than –10 dBm) is set to high gain, the output level on any connected
inputs will be exceeding design limits. Significant distortion to the RF signal may occur under these
circumstances.
3.5.12. RF Upper Threshold Level / RF Lower Threshold 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
for upper and lower thresholds. If the RF signal input power goes outside of this range, an alarm is
generated.
3.5.13. 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.
3.5.14. Squelch Enable
This command allows the squelch function to be enabled or disabled on each input.
3.5.15. Input Power Level
This command generates a list of the current RF signal powers present on each input.
3.5.16. Output Switch Delay
This menu item allows the adjustment of delay between an output switch. The range for this parameter is 0
to 10000 milliseconds in increments of 100.
3.5.17. LNB Power
On XRF1 units with –LNB option, this item allows enable / disable control of the LNB power on the input
connectors of the unit. For each input, the LNB control allows setting the LNB power to OFF or 13V or
17V.
3.5.18. LNB Reset
On XRF1 units with –LNB option, this item allows the reset of the LNB voltage after a short circuit has
occurred. On XRF1A units with the –LNB option, this menu item is not applicable as LNB short circuit
protection is dynamic (i.e. automatically restores when the short/overload is removed)
3.5.19. Misc Fault Status
This item provides information on miscellaneous faults with the router.