Performing a Hard Reset
The hard reset function restores the switcher to the base firmware that it shipped with.
After a hard reset, events do not automatically start, but user settings and files are restored.
Perform a hard reset as follows:
NOTE: The hard reset restores the factory-installed firmware. The switcher reverts
to that factory firmware the next time power is cycled off and on unless a
firmware update is performed before the power cycle.
1. If necessary, turn off power to the switcher.
2. Press and hold the Reset button on the rear panel while you apply AC power to the
switcher (see figure 23).
Power
RESET
LAN
CT
LINK
RESET
LAN
CT
LINK
Press and hold the Reset button while you apply power to the switcher.
The switcher flashes the front panel LEDs
and then turns them off.
Continue to hold the Reset button until all input and output LEDs return
to unlit and the Video and Audio LEDs light.
Release the Reset button.
— and —
Figure 23. Hard reset
Optimizing the Audio
Each individual input audio level can be adjusted within a range of -18 dB to +24 dB, so
there are no noticeable volume differences between sources and for the best headroom and
signal-to-noise ratio. Adjust the audio gain and attenuation as follows:
1. Connect audio sources to all desired inputs and connect the audio outputs to output
devices such as audio players. See “Audio input and output,” in the Installation
section. For best results, wire all of the inputs and the outputs as balanced.
2. Power on the audio sources, the switcher, and the audio players.
3. Switch among the inputs (see “Creating Ties”), listening to the audio with a critical ear
or measuring the output audio level with test equipment, such as a VU meter.
4. As necessary, adjust the input audio level of each input (see “Viewing and Adjusting
the Input Audio Level,” in this chapter) so that the approximate output level is the
same for all selected inputs.
5. As necessary, adjust the output audio level of each input (see “Viewing and Adjusting
the Output Volume,” in this chapter).
MPX 866 A Media Presentation Matrix Switcher • Operation 53
