Motorola GP series Service-Handbuch - Seite 21

Blättern Sie online oder laden Sie pdf Service-Handbuch für Zwei-Wege-Radio Motorola GP series herunter. Motorola GP series 26 Seiten. Professional radio
Auch für Motorola GP series: Informationen zum Dienst (24 seiten), Informationen zum Dienst (31 seiten), Informationen zum Dienst (43 seiten), Informationen zum Dienst (30 seiten), Benutzerhandbuch (16 seiten), Handbuch (30 seiten)

Seite drucken
Motorola GP series Service-Handbuch

Notes For All Schematics and Circuit Boards

5.0
Notes For All Schematics and Circuit Boards
* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads
(pF) or microfarads (µF).
2. DC voltages are measured from point indicated to chassis ground using a Motorola DC
multimeter or equivalent. Transmitter measurements should be made with a 1.2 µF choke in
series with the voltage probe to prevent circuit loading.
3. Interconnect Tie Point Legend:
UNSWB+
SWB+
R5
CLK
Vdda
Vddd
CSX
SYN
DACRX
VSF
VR
6-LAYER CIRCUIT BOARD DETAIL VIEWING
COPPER STEPS IN PROPER LAYER SEQUENCE
=
Unswitch Battery Voltage (7.5V)
=
Switch Battery Voltage (7.5V)
=
Receiver Five Volts
=
Clock
=
Regulated 3.3 Volts (for analog)
=
Regulated 3.3 Volts (for digital)
=
Chip Select Line (not for LVZIF)
=
Synthesizer
=
Digital to Analog Voltage (For Receiver Front End Filter)
=
Voltage Super Filtered (5 volts)
=
Voltage Regulator
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
SIDE 2
INNER LAYERS
2-5