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10 Overload Protection
Each channel is protected against short-circuit and thermal overload. If the thermal overload on any
channel engages, the front panel indicator for that channel will illuminate. In addition, an overload on any
channel will cause the overload signal (pin 37) on the input connector to go high (+5V).
The amplifier can also be disabled by applying a logic high (3.3V to 5V) to the disable pin (pin 36).
The PD32 has a side air intake and rear exhaust. These vents should not be obstructed. If sufficient air-flow
is not available, the amplifier will enter a thermal overload state as discussed above.
11 Rack Mounting
The PD32 can be installed in a 19-inch x 2U rack space using the single unit rack kit
(order code: SingleRackKit-2U).
Two amplifiers can also be installed in a side-by-side configuration using the double unit rack kit (order
code: DoubleRackKit-2U). The double rack kit is assembled in the factory and includes coupling screws for
the enclosure, and the same handles as the single rack kit.
Figure 1. Single rack kit, showing the amplifier on left, and the rack adaptor on right.
12 Input Test Connector and Cable
An adaptor PCB is supplied which connects all input channels to a single BNC connector. A 2.5ft DB37
(Male-Male) input cable is also supplied.
PD32 V4 Manual
11
15/02/2024
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