PTE-50-CET
Sheet 29
3.5.2.2. SYNCHRONIZING REFERENCE indicators
They are three, 3 mm, red LED's.
Depending on the function mode selected (INDEPENDENT or MASTER of
REFERENCE) functions as follows:
INDEPENDENT MODE:
Only one of the three, 3 mm red LED's, can be on at the same time.
•
Line
: the reference is the main voltage supply.
•
Bus
: the reference is another PTE unit connected via BUS-PTE, normally to the PTE-300-V or
PTE-100-V. If the led is flashing there is no reference in the BUS.
•
Ex
t: the selected reference is taken from another instrument or equipment Connected in the
external reference tap. If the led is flashing there is no valid Reference.
MASTER of REFERENCE MODE:
The LED marked
“Bus”
will be flashing slowly, indicating that the equipment is in the Master of
Reference Mode. The other LED's
“Line”
y
“Ext”
and only one of these can be on at the same
time.
•
Line
: The reference of the equipment is taken from the voltage supply and sends this
information to the PTE-BUS, therefore the other equipment connected to the BUS will also be
reference to it.
•
Ex
t: The reference of the equipment is taken from the External Reference and sends this
information to the PTE-BUS, therefore the other equipment connected to the BUS will also be
reference to it. If the led is flashing there is no valid Reference.
3.5.2.3. Monitor state indicator
This is a 3 mm red LED, located above the
Monitor
taps. When it is on, indicates that the
Monitor
is ACTIVATED. When it is off, indicates the
Monitor
is DEACTIVATED.
3.5.3. CONNECTORS AND FUSES
3.5.3.1. Voltage supply
PTE-50-CET has channel fuses that protects the
Power Module
of each channel. These fuses can
be broken in different circumstances (like high transients in the outputs).
When this happens, one of the power outputs half-cycle is lost. That’s why the values you check in
you ammeter differ from the ones displayed in the equipment.
