Cisco Cisco Digital Service Access Node (DSAN) 8211 Troubleshooting Guide
Powering
4032301 Rev A
19
WARNING:
Verify that all equipment downstream of a power passing DSAN port can
safely handle the voltage. Spectrum analyzers and televisions generally
cannot safely handle this voltage.
Verify that all equipment downstream of a power passing DSAN port can
safely handle the voltage. Spectrum analyzers and televisions generally
cannot safely handle this voltage.
To Perform a Basic Power Check
After connecting the plant coax to the DSAN Input port and applying power to the
unit, open the DSAN housing and verify that the power LED on the digital board is
illuminated, as shown in the following illustration.
unit, open the DSAN housing and verify that the power LED on the digital board is
illuminated, as shown in the following illustration.
Troubleshooting
If the power LED is not illuminated:
Use a digital multimeter (DMM) to check for the correct incoming AC or DC
voltages.
voltages.
If incoming AC or DC voltage is not correct, check for power at the test lugs on
the power supply module.
the power supply module.
If the power supply tests OK, probe the RF module itself for power. If power is
not reaching the RF module, check for a loose or broken cable.
not reaching the RF module, check for a loose or broken cable.