Microsemi SA.45s, Руководство пользователя

Страница: 36 / 44

SA.45s Chip-Scale Atomic Clock
SA.45s CSAC User Guide Revision D 33
Figure 15 • CSACdemo Main Panel with Communications Trace Visible
Note: Communications from the host PC to the CSAC are shown in blue and communications from the
CSAC to the host are shown in red.
3.5.6.4 Observing Acquisition
Initially, when the CSAC is powered up, the LOCK LED on the evaluation board momentarily turns on
then off once again. During acquisition, the Unit Status field in the lower right corner of CSACdemo will
proceed through the stages corresponding to the values of the Status register (see
Table 7: Status Codes
). of CSAC (see page 20)
Acquisition takes <3 minutes in a 25 °C ambient (up to a maximum of 5 minutes at –10 °C). When
acquisition is complete, the LOCK LED on the evaluation board illuminates, the CSACdemo right hand
status bar indicates Locked, and the status indicator changes from changes from to .
After locked, the main panel of CSACdemo appears as shown in the following screen shot.