Tait TM8000 Series Applications Manual page 19

Table 2.3 Power connector - power supply input characteristics
Parameter
ab
Radio operating range 9.7
b
Auto-recovery limits 10.2
b
c
Safe input range –0.5
Reverse polarity Crowbar diode with in-line
protection fuse
Cranking earth current In-line fuse with negative lead
protection
a. While the transceiver will operate over this range RF performance to specification applies over 10.8 to 16.0V.
b. Outside the radio operating range the radio will shutdown. Auto recovery will occur if the supply voltage returns
to within the auto recovery limits specified. Depending on the power sense option selected, auto recovery may not
occur if supply voltage drops below 4V prior to returning to within the auto recovery limits.
c. Application of steady state voltage higher than 30V will cause the crowbar diode (D600) to fail short circuit and
in-line fuse to blow. The radio will survive transients above 30V within the 95/54/EC standard.
d. Littelfuse is a registered trademark of Littelfuse Incorporated. Refer to www.littelfuse.com.
Table 2.4 Power connector - speaker output characteristics
Parameter
min.
Load configuration Balanced
Load 3.2
Maximum power 10
Rated duty cycle
Rated audio power 3
TM8000 3DK Hardware Developer's Kit Application Manual
September 2003 © Tait Electronics Ltd
Standard
min. typ. max. units
17.2 V
16.8 V
30 V
Important
The speaker load configuration is balanced; no speaker out-
put line must be connected to ground. Connecting a
speaker output line to ground will cause audio power
amplifier shutdown
Standard
typ. max. units
Ω
W
33 %
W
Test method and conditions
After supply voltage excursion
outside the radio operating
range
No hardware damage.
Test method and conditions
Into 4Ω.
1min at maximum power:
2min Rx standby
Into 16Ω via external speaker
port.
Internal speaker is disconnected.
Description of the Radio Interfaces
Comments
Replacement fuse: Tait IPN
265-00010-80 or Littelfuse
part number 314010 or
equivalent.
Comments
This is 'rated audio power' for
the purposes of all external
standards.
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