Network Button Panels • Software-Based Configuration and Control 33
• Verify that the NBP buttons and knobs (where applicable) are configured correctly.
• For digital input and output connections, verify whether the application requires the
+5VDC pull-up resistor within the control processor or receiver for TTL circuits and use
the software to check whether it is selected within the configuration.
• Verify that input current at any digital input or output port on the control processor or
receiver does not exceed 250mA.
• Verify that input current at the volume control port on an IPCPPro250 does not exceed
10VDC and that the amplifier is cabled correctly, as well.
If you are still experiencing problems, call the Extron S3 Sales & Technical Support
Hotline or the Extron S3 Control Systems Support Hotline (1.800.633.9877).