Cisco 3845 Quick Start Guide - Page 20

Figure 14 DC Wire Routing and Attachment for Cisco 3825 Routers 117120 COMPACT FLASH 1 0 SYS ACT SYS PWR RPS AUX PWR AIM0 AIM1 PVDM0 PVDM1 PVDM2 PVDM3 Plastic covers Cable tie Figure 15 DC Wire Routing and Attachment for Cisco 3845 Routers SYS ACT SYS PWR1 AUX PWR1 SYS PWR2 AUX PWR2 117046 Plastic cover Cable tie Approved Scenarios and Scenarios Not Approved for Dual DC Power Supply Configuration You can connect a single DC power source to either the A input or the B input. If there are dual power sources, connect one source to the A input and one source to the B input. Both sources must be the same polarity (with respect to ground) and voltage (within 0.25 volts). Do not connect -DC grounded and +DC grounded dual sources to a Cisco 3825 series integrated router. Caution Dual sources with opposite-polarity grounding damage equipment. In Figure 16, either the positive source terminal or the negative source terminal is tied to ground. 20