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NDA-24296 CHAPTER 3
Page 185
Revision 1.0
PH-CK16
Phase Lock Oscillator
4. Lamp Indications
Lamp indications for this circuit card are shown in the table below.
LAMP NAME COLOR STATE
ACT
Green Remains lit while this circuit card is in active state.
Off Remains off while this circuit card is in stand-by state.
MJ Red
Lights when the following MJ fault has occurred:
• All of the clock supply routes have failed when the system operates as the clock
subordinate office
• 32.768 MHz output clock failure
• 8 KHz output FH failure
• 5 msec × “n” output FH failure
• Input Frame Pulse (FP) failure (FP is supplied by the SYNC card)
• Internal OSC (±5 ppm deviation) has failed when the system operates as the clock
source office
MN Red
Lights when the following MN fault has occurred:
• One or more (but not all) DTI/DCS clock supply routes have failed
• Drifting failure
• Internal OSC (±5 ppm deviation) failure
SYNC
Green Remains lit while the system is synchronized with the network.
OFF
Remains off when either of the following has occurred:
• DCS clock failure when receiving the clock signals from the DCS.
• DTI clock failure when receiving the clock signals from the DTI.
• Drifting failure
ICK Green Lights when the internal oscillator is operating normally.
PALM Red Remains lit when power is abnormal.