Analog Vote Tab for MLC 8000 Analog Comparator Configuration in an IP Simulcast System
This section contains a table showing the fields on the Analog Vote Tab used for configuring MLC 8000 Analog Comparators in an IP simulcast system. For each field, the field name, default value, range of values, and field description are provided.
In the following table, all fields are editable unless a note in the description column indicates otherwise.
| Field | Default Value | Range of Values | Description |
|---|---|---|---|
| Voter ID | N/A | 00001 to 65535 | Serves as a unique identifier in the system.
NoteYou cannot edit this field.
|
| Channel Name | Blank | 0 to 19 alphanumeric characters | Specifies the channel name assigned to the Voter, which is the name assigned to the voting group. This name is shown on the Configuration Tool main screen and in the Display and Control Application.
NoteIf you modify this field, the MLC 8000 Analog Comparator is restarted to implement the new parameter value.
|
| Channel Number | None | 1 to 200 | Specifies the channel number.
NoteIf you modify this field, the MLC 8000 Analog Comparator is restarted to implement the new parameter value.
|
| Voter Location | Prime Site | Prime Site, a particular subsite in the drop-down list, or Add Subsite | Specifies the voter location which can be the prime site or a particular subsite that appears in the drop-down list. Or select Add Subsite in which case you are prompted to add a subsite which then appears in the drop-down list for this field as a valid selection. |
| Analog Voting Sample Period (msec) | 50 msec | 5 to 10000 msec | Sets the SQM sampling window length at the MLC 8000 Subsite Link Converter. During this window, the DSP collects the voice stream coming from the base radio. After the window has closed, the DSP calculates the SQM value from the collected samplings. The SQM number represents the quality of the received voice. This parameter is configurable at the MLC 8000 Analog Comparator which then distributes it to the MLC 8000 Subsite Link Converters since all MLC 8000 Subsite Link Converter ports of the channel should use the same sample period timer value.
NoteIf you modify this field, the MLC 8000 Analog Comparator is restarted to implement the new parameter value.
|
| Link Delay (msec) | 80 msec | 60 to 300 msec | Specifies the link delay. From the first SQM value received at the voter, the voter starts the Link Delay timer and collects all SQM values in between. This delay is the maximum audio buffer length that holds the inbound voice at the voter. The parameter setting is related to the Ethernet link delay in the MLC 8000 Subsite Link Converter-to-MLC 8000 Analog Comparator path. |
| Audio Truncation | Checked (enabled) | Checked (enabled), Unchecked (disabled) | If checked, the inbound audio samples used for calculating the SQM are discarded and the audio is played with truncation. If unchecked, the inbound audio samples used to calculate the SQM are played, and that causes hearing the voice with delay in respect to the voice coming from the radio.
NoteIf you modify this field, the MLC 8000 Analog Comparator is restarted to implement the new parameter value.
|
| First Vote Hold Time (msec) | 250 msec | 5 to 10,000 msec | Specifies the length of time the software waits after the initial vote before the vote is allowed to unlock and change.
NoteThis field is used only if the
Vote and Hold field is disabled (meaning that the voting algorithm is continuous voting).
|
| Transmitter Steering | Unchecked (disabled) | Checked (enabled), Unchecked (disabled) | Specifies whether the Transmitter Steering is used. When Transmitter Steering is disabled, the Voting Type parameter is defaulted to Continuous Voting. When Transmitter Steering is enabled, the Voting Type parameter is defaulted to Regional Voting. |
| Voted Transmitter Steering | 8.0 seconds | 0.0 seconds to 100000 seconds, Infinite, increments of 0.1 seconds | Allows the dispatchers to converse back to the transmitters of the last voted BR. Starts when all radios and dispatcher have de-keyed. Holds the last voted BR for the dispatcher to respond back to, even after the call is over. If expires, the voted BR is no longer valid. All voting method uses this timer. The Voted Transmitter Steering Time is only valid when Transmitter Steering is enabled.
NoteIt is expected for the
Talk Back Time to be shorter than the
Transmitter Steering time.
|
| Talk Back Time | When the Voting Type is Regional Voting, the default is 2.0 seconds. When the Voting Type is Vote and Hold, the default is 0.0 seconds. | 0.0 seconds to 100000 seconds, increments of .1 seconds | Allows radio users and the dispatchers to converse while maintaining the call activity within a region (an area with multiple BRs, subsites, used with Regional Voting) or a subsite (a single BR used with Vote and Hold). For Regional Voting, started when the radios from the active region have de-keyed and the dispatcher has de-keyed. Holds the list of receivers from the first voted BR, so the radio users and dispatchers can respond back and forth. If expires, audio from any BR can be voted. For Vote and Hold, started when the radio from the voted BR has dekeyed and the dispatcher has dekeyed. Holds the first voted BR so the radio users and dispatchers can respond back and forth. If expires, audio from any BR can be voted. For Continuous Voting, the Talk Back Time is not valid as the BR with the strongest RF signal is the strongest subsite. The Talk Back Time is only valid with Transmitter Steering is enabled. It is expected for the Talk Back Time to be shorter than the Transmitter Steering time. The Talk Back Time is only valid when Transmitter Steering is enabled.
NoteIt is expected for the
Talk Back Time to be shorter than the
Transmitter Steering time.
|
| Voting Type | When Transmitter Steering is disabled, the default is Continuous Voting. When Transmitter Steering is enabled, the default is Regional Voting. | Vote and Hold, Continuous Voting, and Regional Voting | This parameter specifies the voting type. For Vote and Hold, a single vote will be performed at the beginning of the call. The analog first vote hold time field is ignored when the vote and hold operation is selected. For Continuous Voting, the signal is periodically voted throughout the analog call. Also for Continuous Voting, the analog first Vote Hold parameter is set to its default value. For Regional Voting, once the analog comparator votes a sub-site, the analog comparator allows another sub-site to be voted if the sub-site is in the region of the first voted sub-site. Regional Voting is only valid when Transmitter Steering is enabled.
NoteWhen
Transmitter Steering is disabled, the
Voting Type is
Continuous Voting. When
Transmitter Steering is enabled, the
Voting Type is
Regional Voting.
|
| Voting Hold Time (msec) | 250 msec | 5 to 10,000 msec | Specifies the fixed amount of hold time used to ensure that the voted port does not switch for that fixed amount of time after it is selected as the voting port.
NoteThis field is used only if the
Vote and Hold field is disabled (meaning that the voting algorithm is continuous voting).
|
| Voting Hysteresis (dB) | 1.1 dB | 0.0 to 12.0 dB with granularity of 0.1 dB | Specifies how much better the signal quality must be on an unvoted port in order for the comparator to select that port at the voted port. This parameter works along with the analog signal quality debounce time to determine when the analog voter may switch the audio source. |
| Analog Signal Quality Debounce Time (msec) | 150 msec | 5 to 10,000 msec | Specifies how much time a signal must be better than the voted signal in order to become voted. Debouncing the signal quality prevents spikes of strong signaling on a port from inducting a change in the voted port. |
| Analog Voice Console Hangtime (sec) | 0.0 sec | 0.0 to 15.0 seconds in 0.1 second increments | Specifies the amount of time the base radio remains keyed and transmitting silence at the end of the analog voice from the attached TRC analog console. The period of silence is pre-emptible by any inbound signal. |
| Analog Voice Repeat Hangtime (sec) | 5.0 sec | 0.0 to 15.0 seconds in 0.1 second increments | Specifies the amount of time in which the base radio remains keyed and transmitting silence at the end of the repeat voice from the attached analog base radio receiver. The period of silence is pre-emptible by any outbound or inbound signal. This field is ignored for Repeat OFF setting, either by the CT or by the TRC command from the VGU attached TRC console. |