UltraView SYNTH1000x2, Руководство пользователя

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LED INDICATORS
There are seven Red/Green LEDs on the top edge of the SYNTH1000x2 board that are useful during
system integration for monitoring the board status. The functions of the LEDs are outlined below.
ENABLE ACQ LED (FREQUENCY LOCKING ENABLED INDICATOR)
This LED displays whether the frequency locking loop is enabled.
Green: CRO (3.5GHz Coaxial Resonant Oscillator) is successfully locked to <1ppm TCXO reference or
external reference clock.
OFF: CRO is not successfully locked to a TCXO or external reference frequency. Usually this
condition occurs during warm-up.
DMA LED
This LED indicates the FLL (Frequency Locking Loop) DAC has reached its low limit without locking.
This is an error condition.
Green: DAC at zero, tuning direction for lock is down.
OFF: DAC not at zero.
ACQUIRING LED
This LED indicates the FLL (Frequency Locking Loop) DAC has reached its high limit without locking.
This is an error condition.
Green: DAC at Full Scale, tuning direction for lock is up.
OFF: DAC not at Full Scale.
MODE LED
This LED displays whether the device is to be locked to internal clock or external clock.
Green: Set up to be locked to internal clock
Off: Set up to be locked to external clock
CLOCK BAD LED
This LED displays the current status of the 3.5GHz internal clock:
Off: Internal clock locked to high accuracy reference oscillator.
Red: Internal clock not locked correctly. This means one of three things:
1) Not Locked.
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