Adds a signal standard or a custom frequency measurement channels.
ADD CHANNELS
Allows you to create custom frequency measurement channels or choose from the list of signal standard options. Select ADD CHANNELS to start adding channels. The add channels window consists of three tabs as explained below:
• SIGNAL STANDARD: Adds new channel (s) in the channel scanner measurement, copied from a user selected signal standard band.
• FREQUENCY RANGE: Adds new channel (s) in the channel scanner measurement, created from a user specified frequency range.
• CUSTOM: Adds new channel (s) in the channel scanner measurement, created from a user specified Center Frequency and Channel Span.
SIGNAL STANDARD
The SIGNAL STANDARD tab consists of a list of preset standards of various frequency bands such as WiMax, UMTS and so on. Enter the name of a specific band for e.g. LTE in FILTER field on the top to view all the frequency bands included in that standard. Select the number of channels by entering a value in CHANNEL COUNT field.
Add Channels - Signal Standard
• SIGNAL STANDARD: The list of signal standards included in various frequency bands.
• START CHANNEL: The index of the first channel to be copied from the signal standard (with successive channels increasing sequentially).
• CHANNEL STEP SIZE: The number of indexes skipped between channels copied. Example: if the Start Channel is 1, and the Signal Standard's increment is 1, channels in the standard are 1, 2, 3, 4, 5 and so on. If the user specifies a Step Size of 3, channels copied are 1, 4, 7, and so on. If the increment was 2, channels in the Standard would be 1, 3, 5, 7, 9, 11, 13, 15, 17 and so on.
• CHANNEL SPAN: The distance between a given channel's start and stop frequency. Enter a specific value to override the signal standard span, otherwise the default signal standard value will be used.
• CHANNEL COUNT: The number of channels intended to be copied from the signal standard.
• INDEX: Position in the channel scanner list to place the new channels.
• DWELL TIME: The time duration spent scanning a given channel. An estimate for time spent in scanning the whole channel list is equal to number of channels times dwell time. The measurement will be completed at the first opportunity greater than the specified time. A 0 or no value indicates that the measurement will be completed fast as possible.
• UPPER LIMIT: Channel power upper limit (in dBm), specified for all channels copied. In absence of an user specified limit, infinite power will be used, and the limit will always pass.
• LOWER LIMIT: Channel power lower limit (in dBm), specified for all channels copied. In absence of an user specified limit, zero power will be used, and the limit will always pass.
Signal Standard Channel Creation Limits
Channels may only be generated from a Start Channel valid for the named Signal Standard band. If the user supplied Start Channel, Channel Step Size, and Channel Count result in channel numbers that either precede or exceed the named Signal Standard band's channel numbers, then such channels are not created. However, all channels valid for the named Signal Standard will be added to the channel scanner list.
FREQUENCY RANGE
The FREQUENCY RANGE tab adds new channels from an user specified frequency range.
Add Channels - Frequency Range
Set the following parameters to add a frequency range channel:
• START FREQUENCY: Start Frequency of the first channel’s span.
• CHANNEL SPACING: The difference between subsequent channels start frequencies.
• CHANNEL SPAN: The difference between the start frequency and stop frequency of channels created.
• CHANNEL COUNT: Number of channels to be created.
• INDEX: Channel scanner list index to be used for the created channel of lowest start frequency, with subsequent (Channel Count - 1) channels enumerated sequentially.
• CHANNEL NAME: User specified channel name.
• DWELL TIME: The time duration spent scanning a given channel, specified for all channels created. Measurement will complete at the first opportunity greater than the specified time. A 0 or no value indicates measurement complete fast as possible.
• UPPER LIMIT: Channel power upper limit (in dBm), specified for all channels copied. In absence of a user specified limit, infinite power will be used, and the limit will always pass.
• LOWER LIMIT: Channel power lower limit (in dBm), specified for all channels copied. In absence of a user specified limit, zero power will be used, and the limit will always pass.
Frequency Range Channel Creation Limits
Channels may only be generated within the frequency span of the analyzer. If the Nth channel to be generated by user supplied Start Frequency, Channel Spacing, and Channel Span results in a channel for which:
Start Frequency < Analyzer Min Frequency Start Frequency + (N * Channel Spacing) >
Analyzer Max Frequency such channels will not be generated regardless of the user supplied Channel Count.
However all created channels with a valid span will be added to the channel scanner list.
CUSTOM
The CUSTOM tab adds a new custom channel to the channels list, created from a user specified center frequency and channel span.
Add Channels - Custom Channel
Set the following parameters to add a custom channel:
• CHANNEL NAME: User specified channel name.
• CENTER FREQUENCY: Center frequency of the new channel.
• CHANNEL SPAN: The difference between the start frequency and stop frequency of channels created.
• CHANNEL COUNT: Number of channels to be created.
• INDEX: Channel scanner list index to be used for the created channel of lowest start frequency, with subsequent (Channel Count - 1) channels enumerated sequentially.
• DWELL TIME: The time duration spent scanning a given channel, specified for all channels created. Measurement will complete at the first opportunity greater than the specified time. A 0 or no value indicates measurement complete fast as possible.
• UPPER LIMIT: Channel power upper limit (in dBm), specified for all channels copied. In absence of a user specified limit, infinite power will be used, and the limit will always pass.
• LOWER LIMIT: Channel power lower limit (in dBm), specified for all channels copied. In absence of a user specified limit, zero power will be used, and the limit will always pass.
Custom Channel Creation Limits
Channels may only be generated within the frequency span of the analyzer. If the channel span generated by user supplied Center Frequency and Channel Span results in either:
Center Frequency - (1/2 * Channel Span) < Analyzer Min Frequency
Center Frequency + (1/2 * Channel Span) > Analyzer Max Frequency
