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pin 2 falls below 24 volts for a continuous 1- second interval. The hardware and software responds to this condition by turning off the power source to pin 2 and flashing the pin 2 LED as a warning. After a
As a diagnostic aid the
2-Wire Circuit Serves as the Unit’s Power Source
If no external source of 24 volts DC is connected and configuration DIP switch 1 is in its on (up) position, the connected
Level Meters
The Model 45 contains four
as a support aid during installation, con- figuration, operation, and troubleshooting. The meters represent the strength of the signals coming in from, and going out to, the
Each level meter contains four green LEDs and one yellow LED. The four green LEDs indicate signal levels at or below +4 dBu. The top LED is yellow and indicates a sig- nal that is 6 dB or greater than the +4 dBu nominal level. An audio signal that causes the yellow LED to light doesn’t necessarily indicate an excessive level condition, but it does provide a warning that at some stage reducing the signal level may be prudent. Typical operation with normal signal levels should find the meters lighting near their 0 dB point. Signal peaks may cause the yellow LEDs to flash. But a yellow LED that lights fully during normal operation will typically indicate a signal level or configu- ration problem.
If the meters consistently display lower or higher levels than their 0 dB points it’s possible that a configuration issue exists. This would typically be related to incor- rect settings on the equipment connected to the
Model 45 User Guide | Issue Preliminary 2, March 2009 |
Studio Technologies, Inc. | Page 21 |