Specifications

Back-UPS Pro 500 BG500 120 Vac 39
How the Watchdog timing works
To ensure optimal conditions for user-free management the Watchdog feature uses a delay between the time the
modem is booted (Smart Outlet 1) and when the wireless router (Smart Outlet 2) is turned on. The Time to Boot
Device is the approximate time it takes to boot most devices. The Time to Boot Device also lets the UPS know
when the second devices is booted so that it can start to ping the target IP Address.
Watchdog Installation
Scenario 1: Watchdog configuration connected to a router. Under the Web Page “Outlet > Settings”, the
Watchdog of Smart Outlet 1 must be set to “Yes”.
Scenario 2: Watchdog configuration with Modem and Router connections. When the modem and router are
both connected to the network, plug the modem input to Smart Outlet 1 and the router into Smart Outlet 2. Under
the Web page “Outlet > Settings”, the Watchdog of both Smart Outlet 1 and 2 must be set to “Yes”.
Note: When both Watchdog 1&2 are enabled and any one Smart Outlet is turned off manually, the
Watchdog feature will be disabled until both Smart Outlets are turned on manually. See "Outlet On /
Off / Reboot" on page 38.
Configuring the Watchdog
Enable Watchdog: (see Outlet > Settings). The user can enable the Watchdog feature on one Smart
Outlet by selecting ‘Yes’. If the outlet is ON, and the user enables the Watchdog feature on this Smart Outlet, the
USP will start to ping the Test Target IP Address. If the outlet is OFF, the Watchdog feature will be disabled.
Note: Enabling the Watchdog feature on Smart Outlet 1&2 could cause the outlet 1&2 turned off at
the same time and turned on sequentially.
The following parameters (in Outlet > Settings) are available only when Watchdog is set to ‘Yes’.
• Time to Boot Device:
The Time to Boot Device indicates the amount of time required for the device that is plugged into the
associated outlet takes to boot into a ready state. In the Watchdog mode, when the Smart Outlet 1&2 are
both enabled, the both Smart Outlets will reboot at the same time immediately, but the Smart Outlet 1 will
turn on immediately and the Smart Outlet 2 will turn on with a delay after the device associated on the
Smart Outlet 1 has booted into a ready state.
The following parameters (in Outlet > Watchdog Settings) are available only when Watchdog is set to ‘Yes’.
Setting or Field Description
Test Target IP
Address
This is the IP address that UPS will ping. This is typically the IP address of the device that
will be re-booted upon failure (modem or wireless router). It could, however, be an
address on the internet when the UPS is used to reboot a communication device that does
not have an IP address such as a CSU/DSU, satellite modem, router, etc.
Frequency of Test
Intervals
When ping requests fail (no response from device), it may be desirable to begin pinging at
a time interval (5 seconds). When ping requests successful, it may be desirable to begin
pinging at a time interval (10 seconds). When it pings fail continuously reaching the Test
Interval, the UPS will reboot the Smart Outlet.
Max Reboot
Attempts
After the device has been rebooted reaching this number of times without any successful
pings, it is assumed that there are problems that are not resolved with a reboot and the
UPS will no longer attempt to reboot the device. The Watchdog function will be
temporarily deactivated. It will be reactivated again based on the next user setting. If a
reboot occurs before the reactivate interval is complete the Watchdog function will be
reactivated as well.
Reactivate Watchdog
after how many
hours?
With these options, user can configure when the Watchdog will be reactivated from the
sleeping stage. When the 0 (Next UPS reboot) is selected, the Watchdog will only
reactivate after next UPS reboot, else the Watchdog will reactivate after the configured
hours is reached.