Motorola ASTRO XTS 5000 - Figure 2-3. DC Power Distribution-UHF Range 1 and 700-800 Mhz Radios (for NNTN5567); Figure 2-4. DC Power Distribution-VHF and Range 2 Radios (for NNTN5567)

6881094C31-E November 16, 2006
Radio Power: General 2-3
Figure 2-3. DC Power Distribution—UHF Range 1 and 700–800 MHz Radios (for NNTN5567)
Figure 2-4. DC Power Distribution—VHF and Range 2 Radios (for NNTN5567)
B+ from the battery is electrically switched to most of the radio, rather than routed through the On/
Off/volume control knob, S1. The electrical switching of B+ supports a keep-alive mode. Under
software control, even when the On/Off/volume control knob has been turned to the Off position,
power remains on until the MCU completes its power-down, at which time the radio is physically
powered down.
7.5 Volts
(Nominal)
RF Board VOCON Board
UNSW_B+
FB+
P1
P201
Analog Circuits Digital Circuits
Battery
J1
BATT
Fuse
V5A
5 Volts
SW_B+
3 Volts
VSW1
Driver
FET
SW_B+
MAKO
3.6 Volts
(VSW1)
1.55 Volts
(V1.55)
5 Volts
(VCC5)
1.875 Volts
(V1.875)
2.9 Volts
(V_2.9)
3 Volts
(Control Signal)
RAW B+
3.8V(VSW 1)
7.5 Volts
(Nominal)
RF Board
VOCON Board
UNSW_B+
FB+ P1
P201
Misc. Supply Digital Circuits
Battery
J1 BATT
Fuse
V5A
5 Volts
SW_B+
3 Volts
VSW1
Driver
FET
SW_B+
MAKO
3.6 Volts
(VSW1)
1.55 Volts
(V1.55)
5 Volts
(VCC5)
1.875 Volts
(V1.875)
2.9 Volts
(V_2.9)
3 Volts
(Control Signal)
RAW B+
3.8V (VSW 1)
V3B V3D
V3A
Analog Circuits
3 Volts