powersoft LiteMod 4HC - 4. Voltage and Thermal Limiter; 5.Mute;Unmute; 6.AUX Voltage Selector

22 | LiteMod 4HC | User guide
14 : 4. Voltage and Thermal Limiter
The EVB is provided with a Clip and Thermal Limiter that protects the connected amplier. Since LiteMod 4HC is protected by
its own limiters, we suggest to disable the EVB internal limiter by using the “Voltage Limiter Disable Switch” (E) (see picture at
paragraph 14:3).
The EVB’s Thermal Limiter can be used with LiteMod 4HC by setting lower thresholds in order to change the amp thermal
behavior, but additional precautions must be taken in order to avoid a thermal shut-down of the module.
Warning: when enabling Thermal Limiter inside EVB, a Clip Limiter will be also enabled. Clip Limiter limits a max THD of
output signal of about 3%, this limiter cannot be adjusted by the user.
TEMP LIMIT VOLTAGE SELECTOR
1 2 3 4 5 6 7 8 Threshold ID
OFF ON OFF OFF OFF OFF OFF OFF g
OFF ON ON OFF OFF OFF OFF OFF f
OFF ON ON ON OFF OFF OFF OFF e
OFF ON ON ON ON OFF OFF OFF d
OFF ON ON ON ON ON OFF OFF c
OFF ON ON ON ON ON ON OFF b
OFF ON ON ON ON ON ON ON a
1 53 72 64 8
ON
OFF
MUTE CH1 MUTE CH2 MUTE CH3 MUTE CH4 CH1 CH2 CH3 CH4
ON MUTED MUTED
ON MUTED MUTED
ON MUTED MUTED
ON MUTED MUTED
Couples of channels CH1-CH3 and CH2-CH4 can be muted or unmuted by acting on the switch “MUTE” of related channels.
When muting a channel, PWM generator stage is disabled.
14 : 5.Mute/Unmute
Plate Temperature Temp Mon 12-34 Threshold ID
25 2,59
30 2,53
35 2,45
40 2,31
45 2,16 a
50 2
55 1,83
60 1,64 b
65 1,43
70 1,22
75 0,98 c
80 0,74
85 0,45
90 0,11
14 : 6.AUX Voltage selector
By default most of Powersoft modules provide an auxiliary supply voltage of +/-12V. By activating (ON status) this switch, the
module provides an auxiliary volt of +/-15V - not applicable on Litemod 4HC.