Extron electronic ISM 824 manual Input audio level gain and output audio volume, Gain =

Operation and Setup, cont’d

Input audio level (gain) and output audio volume

Viewing input audio level and output audio volume

The audio level (gain) of each input can be viewed and adjusted through a range of -18 dB to +24 dB, in 1 dB steps. Adjustment can be made from the front panel, RS-232, or via Ethernet connection.

NSee chapter 4, “SIS™ Programming and Control”, for RS-232 commands, chapter 5, “ISM 824 Software” for Windows Control Program, or chapter 6, “HTML Operation”, for Ethernet commands.

The audio volume level of each output can also be viewed and adjusted through a range of 0 to 64 dB from the front panel (at 1.0 dB per step), or via RS-232 or Ethernet connection using Extron Simple Instruction Set (SIS™) commands. Adjustment is attenuation only.

To adjust the input audio level and output audio volume level, do the following:

1. Press the Esc button to clear all pending changes and reset the LCD.

2. Press and hold the Audio button for 3 seconds, until it flashes red. The View, Esc, and one input button also lights red (see figure 3-25).

NThe input button that lights is the last input button pressed in the previous front panel operation made prior to this viewing.

The LCD shows the input audio level (gain) for the lit input (see figure 3-25), and the output audio volume for the last output selected.

NThe output may not be tied to the lit input when;

(1)the input is not tied to any output, or

(2)the input is tied to multiple outputs

Step 1.	Step 2.
Press the Esc button to	Press and hold the
clear all selections.	Audio button until it	The View and Esc buttons light red.
	blinks red.

	C O N T R O L				I / O		C O N T R O L
ENTER	PRESET	VIEW	ESC	VIDEO	AUDIO	ENTER	PRESET	VIEW	ESC

The Esc button flashes green once.

IN	#5	GAIN = -18
OUT	#6	VOL = 000

NThe LCD shows the current audio settings for the lit input and a tied output.

The last input button pressed lights red.

INPUTS

1 2 3 4 5 6 7 8

Figure 3-25 — Steps 1 and 2 for viewing the audio settings

3.	If the input button lit is not the desired input, press and release the relevant
	input button. That button lights red and the other input button extinguishes.
	The LCD changes to show the input audio level for the selected input.

NThe output readout on the LCD does not change at this time.

NIf no buttons are pressed for 30 seconds after step 2, the audio adjustment mode times out, and all buttons extinguish.

4. If the LCD output readout is not the desired output, press and release the applicable output button. That button lights red and the input button extinguishes. The LCD changes to show the output audio level for the input.

3-18 ISM 824 Integration Scaling Multiswitcher • Operation and Setup