RF connection
This page shows the data that corresponds to the cable modem section of the Electroline transponder.
The data includes RF communications status information as well as the boot-up status of the cable modem section.
This page can be used to diagnose and troubleshoot RF problems. Note that if there are RF problems, you can only
query this page through the USB port on the transponder itself.
Startup status
| Procedure |
Description |
Additional information |
| Boot State |
Should be "OK" if the cable modem section is booted up properly. |
Should be Operational unless the boot has failed. |
| Frequency |
Shows the downstream frequency in hertz. |
Should be Locked, unless the cable modem is unable to receive the downstream channel. |
| Connectivity |
Should be "OK" if the cable modem has registered and the link is still active. |
Should be Operational unless the connection is faulty. |
| Security |
Can be "Enabled" or "Disabled" |
If enabled, may indicate BPI or BPI+. |
Dual IP
| Field | Description |
|---|
| Current IP Addresses |
Lists the all the IP addresses (IPv4/IPv6) on Dual IP stack. |
| MAC Address |
MAC Address on Dual IP stack. |
| Gateway |
Dual IP Gateway. |
| Subnet |
Dual IP Subnet. |
| Configuration file |
Config file for Dual IP stack. |
Downstream
| Status |
Description |
| Lock Status |
Should be Locked, unless the cable modem is unable to receive the downstream channel
due to noise, absence of signal or other RF problems. |
| Channel ID |
Displays the channel number assigned to the downstream channel, if applicable. |
| Downstream Frequency |
Shows the downstream frequency in hertz. |
| SNR |
Shows the signal-to-noise (SNR) ratio in decibels (dB). A ratio greater than 30 dB is desirable. |
| Modulation |
Indicates the type of modulation used for downstream DOCSIS communications. Can be 64 or 256 QAM. |
| Symbol Rate |
Shows the downstream channel's data rate, in symbols per second. |
| Downstream Power |
Shows the downstream channel's power in a 6-MHz band, expressed in decibels referenced in a millivolt (dBmV). |
Upstream Channel
| Status |
Description |
| Lock Status |
Should be Locked, unless the cable modem is unable to transmit upstream due to noise, absence of signal or
other RF problems. |
| Channel ID |
Displays the channel number assigned to the upstream channel, if applicable. |
| Frequency |
Shows the upstream frequency in hertz. |
| Modulation |
Indicates the type of modulation used for upstream DOCSIS transmissions. Can be 16 QAM or QPSK. |
| Symbol Rate |
Shows the upstream channel's data rate, in kilosymbols per second (Ksym/sec). |
| Power |
Shows the upstream channel's power, expressed in decibels referenced in a millivolt (dBmV). |
Time of day format
Day of the week, Month, Day, Time (hours:minutes:seconds), and Year.