If a LFRX card is installed, you can read the following parameters:
| Parameter Name | Description |
|---|---|
| Attn | An integrated attenuator makes it possible to attenuate the RF-signal in 1dB-steps from 0 to 31dB. The selected value is displayed here. If the parameter 'Remote' is 'ON', you can easily change the attenuation value by clicking on it. Now you can select the desired value from a drop-down-box. Pressing the 'Submit'-button applies the new attenuation. If the parameter 'Remote' is 'OFF' it is not possible to change this parameter by remote control. If Attn is highlighted, it will show that in redundancy configuration the attenuator value plus the redundancy offset value is out of range (0..31dB). |
| Remote | It is possible to change some settings of the LFRX card remote (e.g. via web browser interface) or local (only on the front panel of the card). The current state of the hardware remote/local switch on the corresponding card is shown here. |
| Opt. I/P Pwr | This parameter shows the received optical power. The label 'FLT' or 'OK' behind this parameter tells you, if the value is in the range (OK) or not (FLT). The values are given by the LFRX card and can not be changed. Alarm threshold values are: 0.22mW as low limit, 2.5mW as high limit. This is the first of 2 redundancy switching criteria (if the redundancy switching option is installed and activated). When this value falls below 0.22mW, redundancy switching will be initiated |
| RF Pwr | This value shows the output RF power of the LFRX card. The label behind this parameter tells you if the value is in range (OK) or not (FLT). The values are given by the LFRX card and can not be changed. Alarm threshold values are: RFmin typ. -31dBm (-38...-28dBm), RFmax typ. -5dBm (-10...-3dBm). The measurement range is approx. -45...0dBm (range varies by changing RF offset on Setup page, provided values are valid for RF offset = -42dB) |
| RF Thresh. | The RF threshold is a parameter that can bet set to any value <=-99dBm in the configuration menu. If the current RF power is below the RF threshold it shows a red label (FLT). If the RF power is above the limit it shows a green label (OK). Software-limits configuration: <-90dBm will disable the Threshold Alarm, <-95dBm will also disable the RF-card Alarm/Warning (Hardware Limit Card) at the Web-page and the remote interface. This is the second of 2 redundancy switching criteria (if the redundancy switching option is installed and activated). When this value falls below configured threshold value, redundancy switching will be initiated. |