36 HPFF12 NAC Expander — P/N 53576:B 11/24/2010
Programming Options Programmable Features
3.2 Programmable Features
3.2.1 Input/Output Functions
DIP switches 1 through 4 are used to determine the input to output functions of the HPFF power
supplies. The NAC outputs are programmed in pairs. DIP switches 1 and 2 are used to determine
the input to output functions for NAC outputs 1 and 2. DIP switches 3 and 4 are used determine the
input to output functions for NAC outputs 3 and 4.
The pass-through feature passes any signal on the initiating device inputs to the NAC outputs.
These signal inputs are independent in pass-through, so visual sync protocol and audible coded
signals may be passed simultaneously. The signal types may include steady-on, march time,
temporal or audible coded signals.
The temporal generator feature is used to have the power supply generate a temporal audible code.
The filtered feature is used to provide a steady-on output with full-wave rectified unfiltered input,
and can be used to reduce or eliminate spurious outputs that are caused by noise on the inputs.
NAC Outputs 1 & 2
DIP Switch 1 DIP Switch 2 Function
OFF OFF Pass-through (of Steady On, sync, or audible coded; DO NOT use with
full-wave rectified input).
ON OFF Temporal generator.
OFF ON Sync generator (see Synchronization Type below).
ON ON Pass-through Filtered (use for full-wave rectified inputs).
Table 3.2 Input/Output Configurations for NACs 1 & 2
NAC Outputs 3 & 4
DIP Switch 3 DIP Switch 4 Function
OFF OFF Pass-through (of Steady On, sync, or audible coded; DO NOT use with
full-wave rectified input).
ON OFF Temporal generator.
OFF ON Sync generator (see Synchronization Type below).
ON ON Pass-through Filtered (use for full-wave rectified inputs).
Table 3.3 Input/Output Configurations for NACs 3 & 4
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