CALAMP WIRELESS NETWORKS INC. BDP3-CRE700 ユーザーズマニュアル

 
 

120 20194-102 

 

Torque Settings:  
The manufacturer recommends torque setting all power supply terminal screws to a minimum of: 
•  1.5 Nm (or 13.28 In/lb or to 1.107 ft/lb) 

Both red-colored translucent power switches located on the front of the power supply modules illu-
minate when AC power is available. Toggle both to ON to distribute power to the Radio Assembly 
and to the Power Amplifier. The LED immediately below the switches light green indicating normal 
DC power operation.  

2.5.1.2 Backplane Fuses 
Blade fuses (Maxi-Fuse) are used on the Radio assembly backplane: 
 

Maxi-Fuse 

1.15 (29.21) 

1.35 (34.29) 

.35 (8.89) 

 

Values 10A  15A*  15A* 

* 

Always replace the two 15A fuses as a pair.

 

Refer to 

Figure 5

 on page 7 for the location of DC power and RF in and out connectors. 

Connect the T881 Tx module output to the power amplifier’s input using the set provided by Da-
taradio (an RG223 cable with a 10dB attenuator). 

For the power amplifier output, Dataradio recommends a 50-ohm, low-loss, double-shielded 
grade RF cable such as RG214 or 1/4" Heliax.  

Power adjustments cannot be made on the field without voiding the warranty.   Dataradio does 
not recommend setting an output lower than 35 watts. Allow a 60-minute warm-up period before 
setting power. 

Note: Although the T809-10 is a high efficiency switched mode power supply (PS), a consider-

able amount of heat is generated during normal operation with the power amplifier (PA). 
While in use, ensure that an adequate flow of cooling air is able to circulate around the PS 
and the PA, and that the air intake vents on the rear and sides of the unit are not inadver-
tently covered.