6881094C28-D July 16, 2004
Radio Alignment Procedures: Bit Error Rate 6-13
The bit error rate screen contains the following fields:
• Rx Frequency:
This field selects the Receive Frequency directly in MHz.
• Test Pattern:
This field selects the Digital test pattern — TIA. Choices are: Standard Tone Test Pattern
(Framed 1011) and Standard Interface Test Pattern (CCITT V.52).
• Modulation Type:
This field represents the digital modulation type of the incoming signal on which BER is to be
calculated.
• Continuous Operation:
This field allows the user the option to repeat the BER test indefinitely. A selection of Yes will
cause the radio to calculate BER on a continuous basis and update the results on this screen
after each integration time. A selection of No will cause the BER test to execute for only one
sample of the integration time and then update the display.
• Audio:
This field allows the user to select the audio output during a test. Selecting Internal will cause
the radio's built-in speaker to unmute to any signals at the desired frequency which are present
during the test. Selecting External will route the same signal to the radio's accessory connector
audio output. Selecting Mute will disable the audio output.
• BER Integration Time:
This field represents the amount of time over which the Bit Error Rate is to be calculated. The
range is from 0.360 to 91.8 seconds in increments of 0.360 seconds.
NOTE: When Continuous Operation = Yes, all fields will be grayed out while the test is in progress.
They will be enabled when the STOP button is pressed.
When Continuous Operation = No, a wait cursor will be displayed while the test is in
progress and return to normal when the test is done.
Figure 6-10. Bit Error Rate Screen
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