In order to perform SNMP GET requests on a device, a valid community string must be specified.
Pelco Video Management
NET5402R-HD Network Video Decoder, version 2.3.0 or higher
NSM5200 Network Storage Manager, all versions
SM5000 System Manager, version 1.4.70
SM5200 System Manager, all versions
UDI5000-MTRX, version 1.2 or higher
VCD5202 Video Console Display, version 2.3.0 or higher
The community string varies among Endura products.
The community string for the NET5402-HD, NSM5200, SM5000, UDI5000, and VCD5202 is pelco
SNMP on the SM5200 is turned off by default. You have to access the Web interface of the SM5200 and enable SNMP in the "Device" section. Then, choose either version 2c or version 3, enter a community string and then save.