Input Type Selection; Amp-Number Selection; Mute Function; Timer Function - Classe Audio Delta Series Service Manual

corresponding channel is in Single-ended mode. For each channel, only one of the two LEDs should be active
(upper of lower, depending on the selected mode for that channel). A red LED indicates a fault condition.
Note that the timing of these LEDs does NOT correspond to the timing of the relays. When the system is
powered-up, all channel LEDs (either upper OR lower) should be solid blue.
With the boards powered up (LEDs on) verify the dimming of the front-panel LEDs using the DIM command
via RS-232 (check ALL LEDs, both balanced and single ended mode).

Input type selection:

To program the input type (Balanced or Single-ended) for each channel, briefly press the SELECT button while
the unit is in Standby. The channel LEDs will light up in blue to display the current configuration (upper LED
ON means Balanced, lower LED ON means Single-ended). The LED for channel 1 will be flashing to indicate
that you can modify the input type for this channel. You may switch the input type by pressing the MODE
button (this will also change the blinking LED). You may move on to the next channel by pressing SELECT
again. To finish the input configuration press SELECT until the LEDs are all off (after channel 5).

Amp-number selection:

The AMP-number is a unique ID (from 1 to 15) assigned to each amplifier in a multi-amplifier system. This
number is also equal to the delay (in seconds) the amplifier waits (from the time you press the Standby button)
before it starts powering-up. This delay ensures that multiple amplifiers do start powering up at the same time.
To change the AMP-number press and hold the MODE button while the unit is in Standby. After about 3
seconds the channel LEDs will ALL go ON at the same time. If you let go the MODE button (without pressing
anything else), the LEDs will go off briefly and then blink (all together) to indicate the currently programmed
AMP-number. The number of times the LEDs flash ON is the current AMP-number. To change the AMP-
number, press and hold the MODE button. After 3 seconds, when the unit turns ON all the channel LEDs,
press the SELECT button as many times as the wanted AMP-number (while still holding the MODE button).
When you are done, let go the MODE button. The unit will flash the LEDs as many times as the new AMP-
number to confirm your entry.

Mute function:

The amplifier can be muted via RS-232 or remote control. All channels are muted together (see Appendix B).
When the unit is in mute mode, the corresponding active channel LEDs (either balanced OR single-ended for
each channel) flash blue.

Timer function:

A global timer keeps track of the time the unit has operated since shipping. This timer is activated every time
the unit is powered up (from Standby), and it stops when the unit is powered down (back to Standby). It is
updated every hour to prevent missed counts due to power failures etc. This timer can be read (and cleared
with the proper password) via RS-232 (see Appendix B).

Fault logging function:

The amplifier keeps a log of the faults (protection conditions) that have occurred since shipping. This log is
updated every time an amp module reports a fault to the front panel. This log can be read (and cleared with
the proper password) via RS-232 (see Appendix B). 128 entries are kept in the log. When the log is full the
oldest entry is deleted.
CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 17 of 50