PD200X4 V2 Manual
6
Modified 13/01/2021
6
Signal Path
The signal paths for channels 1 and 2 are shown in Figure 1, which are identical to channels 3 and 4.
The signal path includes a DC offset and voltage limit, which are set by front panel controls. The DC
offset function can be disabled with the –OSD option, e.g. order code PD200X4-V100,100-OSD.
Channels 1 (and 3) have a fixed non-inverting gain; however, channels 2 (and 4) can be switched
between independent non-inverting channels, or inverting channels that are connected to channel 1
(or 3). This function is useful for driving bridged loads, which is discussed in the following section.
Figure 1. Signal path for channels 1 and 2, which is identical to channels 3 and 4.
CH1 Front Panel DC Offset
(Disabled with –OSD option)
Voltage
Limit
20
CH2 Front Panel DC Offset
(Disabled with –OSD option)
Voltage
Limit
20
-1
Channel 1
Input
Channel 2
Input
Channel 1
Output
Channel 2
Output
Bridge Mode
Switch
CH1 Power
Amplifier
CH2 Power
Amplifier
Bridge Mode
Output A
