H A R D W A R E I N S T A L L A T I O N C H A P T E R 1
Operation Mode
Click on the Advanced tab at the top right (Figure 14). There are four Operation Modes
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to choose
from: Normal and Safe Mode Levels 1 ā 3, where Normal is the most aggressive and Safe Mode 3 the
safest. The default operation mode is Safe Mode Level 1 and should be used in almost all cases. If
you choose to operate with the Normal mode and your FLEX-5000 freezes up, you should revert to
Safe Mode Level 1. In very rare circumstances your PC may have internal latencies where Safe Mode
Level 1 does not work optimally with your system. In these cases, you should select either Safe Mode
2 or Safe Mode 3 to provide a stable environment to run the FLEX-5000.
Once you have verified that all is working well, you may fine tune the settings to best match your
system and favored modulation mode.
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Technically these Operation Modes control how successfully the hardware driver recovers from buffer over and under runs.
Some hardware drivers and third-party applications issue what are called delayed procedure calls (DPCs). Higher Safe Modes
allow the driver to handle longer DPC latencies at the cost of more audio latency.
29 ļ 2003-2008 FlexRadio Systems
Figure 14: FLEX-5000 Control Panel Operation Mode Setting
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