Leader LT 4448, Instruction Manual, Page: 19 / 74

3. PANEL DESCRIPTION
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3. PANEL DESCRIPTION
3.1 Front Panel
Figure 3-1 Front panel
Table 3-1 Front panel description
No. Name Description Reference
1 ALARM The LEDs light or blink when errors are detected in the power supply, or
the output signals of channels 3 to 11.
4.9.2
2 FAULT The LEDs light when faults are detected in the input signals. 4.9.1
3 SYNC SOURCE Displays the signal that is being transmitted through the output connector.
You can press the key to manually switch the signal that is being
transmitted. The setting is shared among channels 1 to 11 and LTC.
4.8.2
4 AUTO SWITCHING Selects whether the output signal will be switched automatically when a
fault is detected in the input signal The setting is shared among channels 1
to 11 and LTC. Select SWITCH FAULT to switch the output signal
automatically.
Select DISABLED to not switch the output signal automatically.
4.8.3
5 FAULT INDICATOR The LEDs blink when faults are detected in the input signals.
Press RESET to reset alarm indications and fault indications.
4.9.1
6 CONTROL When LOCAL is lit, the top-panel DIP switch settings are valid. When
REMOTE is lit, the settings from the SNMP or HTTP server feature are
valid. Press the key to switch between LOCAL and REMOTE.
4.8.4
7 KEY LOCK The LEDs indicate the key lock on/off state. You can press the key to turn
the key lock on and off. Key lock turns on automatically after 1 minute of
inactivity (no key operations).
4.8.4
8 USB USB port. Connect to a PC to assign an IP address to the LT 4448. 6.1