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Cisco ONS 15454 DWDM Procedure Guide, R8.0
78-17704-02
Chapter 1 Install the Shelf and Common Control Cards
NTP- G36 Measure Voltage
Step 1 Make sure all external wiring connections on the backplane (that is, power, ground, alarms, etc.) are
secure. If a wire or cable is loose, return to the appropriate procedure in this chapter to correct it.
Step 2 (ETSI only) To check that the FMEC cover is seated correctly, verify that it can be easily closed without
disturbing cables.
Step 3 Return to your originating procedure (NTP).
DLP-G36 Measure Voltage
Step 1 Using a voltmeter, verify the office ground and power:
a. Place the black lead (positive) on the frame ground on the bay. Hold it there while completing Step b.
b. Place the red lead (negative) on the fuse power points on the third-party power distribution panel to
verify that they read between –40.5 VDC and –57 VDC (power) and 0 (return ground).
Step 2 Using a voltmeter, verify the shelf ground and power wiring:
a. Place the black lead (positive) on the RET1 and the red lead on the BAT1 point. Verify a reading
between –40.5 VDC and –57 VDC. If there is no voltage, check the following and correct if
necessary:
• Battery and ground are reversed to the shelf.
• Battery is open or missing.
• Return is open or missing.
Step 3 Repeat Step 1 and Step 2 for the RET2 and BAT2 of the redundant power supply input.
Step 4 Return to your originating procedure (NTP).
Purpose Use this task to measure the power to verify correct power and returns.
Tools/Equipment Voltmeter
Prerequisite Procedures None
Required/As Needed Required
Onsite/Remote Onsite
Security Level None
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