Cambium Networks PTP 820E, Quick Installation Instructions

Page 11 of 16 

To mount a PoE Injector on a pole: 
 

To mount a PoE Injector on a 19” rack: 

Mount and tighten the 

Injector to a 114mm 

pole using a stainless 

steel hose clamp.

1

2

Pass the hose 

clamp through the 

pole mount slots.

Connect the ends of the 

hose clamp and tighten 

using the captive screw.

4

3

Attach the Injector 

to the pole.

Mount the Injector to a 19" 

rack using a 19" rack adaptor.

1

2

Mount the Injector on 

the adaptor through 

the wall mounting 

holes, using M6 

screws and washers.

Mount the adaptor 

to the rack using 

four M6 screws 

and cage nuts.

3

To mount a PoE Injector on an ETSI rack: 

Mount the PoE Injector to an ETSI 

rack using a 19" rack adaptor and 

ETSI adapting ears.

1

3

Mount the PoE Injector 

on the adaptor through 

the wall mounting holes, 

using M6 screws and 

washers.

4

2

Connect ETSI adapting 

ears to a 19" rack adaptor 

using four M6 screws.

Mount the 19" rack 

adaptor with the ETSI 

ears on the ETSI rack 

using four M6 screws 

and cage nuts.

To ground a PoE Injector: 
 
1.

On the right side of the PoE Injector, loosen the screw, 
plain washer, and serrated washer. 

2.

Place the cable lug supplied with the PoE Injector kit 
between the plain and serrated washer. 

3.

Tighten the screw. 

 
To connect the PoE Injector cables: 

•

The total length of the cable between the PTP 820E 
port and the Switch/Router the device is connected to 
should not exceed 100m/328ft. This length includes the 
connection between the PTP 820E and the PoE Injector 
(X1 + X2 

≤

 100m/328ft in the figure to the right). 

•

The length of the cable connecting the customer 
equipment to the PoE injector should not be longer 
than 10m (according to ANSI/TIA-568 standard).