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The recovery switch is used for various purposes identified in Table 5.
Recovery Button Depression Action
More than 20 seconds, while the
unit is already powered up.
This resets the configuration to factory defaults.
While connecting power for more
than 40 seconds after power is
applied
This resets to factory defaults and erases any user
loaded software images leaving the factory-loaded
image intact.
None Power cycle by switching off at the mains. All
settings remain the same.
Table 5 - Reset Actions
On the left side of the PIDU Plus 48V DC input and output connections can be found. These
are used to power the PTP 400 Series Bridge from an external DC source or to provide a
level of power supply redundancy as shown in Section 3.3.3 “Redundancy and Alternate
Powering Configurations”. The DC input range is 36-60V. The ODU requires 36V to operate
so care should be taken to account for voltage drop over the ODU to PIDU Plus cable.
WARNING: When using alternate DC supplies the supply MUST comply with the following
requirements:
• The voltage and polarity is correct and is applied to the correct terminals in the PTP 400
Series Bridge PIDU Plus
• The power source is rated as SELV
• The power source is rated to supply at least 1A continuously, and
• The power source cannot provide more than the Energy Hazard Limit as defined by
IEC/EN/UL6090, Clause 2.5, Limited Power (The Energy Hazard Limit is 240VA)
Also on the left hand side of the PTP 400 Series Bridge PIDU Plus connects and jumpers can
be found that allow the remote connection of power LED, Ethernet LED and Recovery switch.
The connection instructions can be found in Section 3.3.4 “Remote LEDs and Recovery
Switch”
The input supply range for the PTP 400 Series Bridge PIDU Plus is 100V-240V AC, 47-63Hz.
Mains connection to the PTP 400 Series Bridge PIDU Plus is made using a standard “figure
of eight” mains lead as shown in Figure 5.