With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pxmExtClkSrcImpedance
pxm Ext Clk Src Impedance
1.3.6.1.4.1.351.110.3.16.10
Impedance on external clock input for PXM card.
Back to CISCO-MGX82XX-PXM-CLOCK-MIB MIB page.
IPHost Network monitor allows you to monitor pxmExtClkSrcImpedance on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.