Mackie SP2400 Instruction Manual - All - Page 26

APPENDIX B: Button Modes SP2400 Button Modes Press 1 on Power Up: AGC Reset • Press and hold the Input 1 button while powering up the SP2400. • Release the Input 1 button and the Input 1 LED blinks. This resets the AGC for all four inputs to the default setting (-5 dBu). • Press the Input 1 button again and the OFF LED lights. This indicates that the AGC circuit is turned off. • Press the Input 1 button again and the OFF LED turns off. This indicates that the AGC circuit is turned on. • Press the OFF button to save the settings and return to normal operation. Press 2 on Power Up: Ambient Mic Preamp Metering • Press and hold the Input 2 button while powering up the SP2400. • Release the Input 2 button. The Ambient Mic Preamp gain is indicated on the LED meter. • Use this mode to calibrate the ambient mic (see procedure on page 20). • Press the OFF button to return to normal operation. Press 3 on Power Up: Paging Mic Level Adjustment • Press and hold the Input 3 button while powering up the SP2400. • Release the Input 3 button. The lowest Paging Mic level is indicated on the LED meter. • Use the Up/Down buttons to adjust the lowest Paging Mic level. • Press the OFF button. The highest Paging Mic level is indicated on the LED meter. • Use the Up/Down buttons to adjust the highest Paging Mic level (see procedure on page 20). • Press the Input 3 button to save the settings and return to normal operation. Press 4 on Power Up: Firmware Version • Press and hold the Input 4 button while powering up the SP2400. • Release the Input 4 button. The LEDs on the front panel indicate the firmware version in binary. • The Input 1-4 LEDs indicate the digit to the left of the decimal point, and the LED meter indicates the digit to the right of the decimal point. • For example, the following illustration indicates version 1.7. • Press the OFF button to return to normal operation. 3 LED pairs lit 111 (in binary) = 7 (in decimal) SP2400 - 26 Version 1.7