27
2.8.2
BACKUP BATTERY CONNECTION
If it is decided to equip the unit with a 6V gel cell type emergency backup battery, connect it to the
two-position BAT screw terminal connection. See the Specification section 1.4 for a recommended
battery type.
OBSERVE THE POLARITY!
3 - OPERATION
3.1 Turn on Procedure
Supply primary power to the unit.
3.2 Indicator Light Interpretation
Table 9 – Indicator Light Interpretation
Indicator
ID
Color
INDCTR
Switch
Function
POWER
AMBER
N/A
This indicator is steadily ON in the presence of primary DC or AC
power. If your unit has an optional battery, this indicator will blink
while being powered by the battery (discharge mode).
TD
GREEN
DN
Indicates data input to the DATA I/O Port.
RD
GREEN
DN
Indicates data output from the DATA I/O Port.
RTS
GREEN
DN
Indicates a true RTS input to Pin 4 of the RS232 connector when
on.
CTS
GREEN
DN
Indicates a true CTS output from Pin 5 of the RS232 connector,
when on.
TDE
GREEN
DN
Indicates data input to Pin 2 of the Expansion Port.
RDE
GREEN
DN
Indicates data output from Pin 3 of the Expansion Port
TX1
GREEN
UP
Indicates data being transmitted via the TX1 optical port.
RX1
GREEN
UP
Indicates data being received by the RX1 optical port
TX2
GREEN
UP
Indicates data being transmitted via the TX2 optical port.
RX2
GREEN
UP
Indicate data being received by the RX2 optical port.
RX1
Priority
GREEN
UP
When on, indicates that the RX1 optical input port is currently
selected by the Priority Select circuitry.
RX2
Priority
GREEN
UP
When on, indicates that the RX2 optical input port is currently
selected by the Priority Select circuitry.
FAULT
RED
N/A
Indicates an electrical anti-streaming timeout, except when the
unit is in Master Fault Tolerant mode. In MFT mode, it indicates a
break in one of the rings.
HI CHG
AMBER
N/A
When this light is on, the battery charger is operating at or near
its 150 mA max. current. This will occur when a battery is being
freshly charged after a power outage when the battery is nearly
totally discharged.
BERT
GREEN
N/A
Indicates that it is properly receiving a “BERT” signal transmitted
by another unit (usually the master).
Summary of Contents for 9525A
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Page 12: ...12 FIGURE 1 MODEL 9525A ENGINEERING VIEWS AND DIMENSIONS...
Page 16: ...16 FIGURE 3 FAULT TOLERANT RING ARCHITECTURE...
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