Motorola APX 1000 - Figure 3-1. APX 2000; APX 4000; APX 4000 Li Overall Block Diagram

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3-2 Theory of Operation:

- APX 2000/ APX 4000 (Two Knobs): Contains an On/Off & Volume Knob, a 16 position

Channel/Frequency Knob, a push button switch used for Emergency call and a light bar.

The top control also includes TX/RX LED that is solid amber upon receive, red on PTT, and

blinks amber on secure TX/RX.

• Main Display – 160 x 90 TFT transflective color LCD.

•Keypad

- Standard Control (M1.5) Keypad version has 3 soft keys

- Limited Keypad Version has 3 soft keys, 4 direction Navigation key, Home and Data but-

tons

• Full Keypad Version has 3 soft keys, 4 direction Navigation key, 3x4 alphanumeric keypad,

Home and Data buttons.

• The expanded version keypad also contains a Bluetooth Controller (ACVR) IC and support

circuitry, a 3-axes digital accelerometer and a Type III secure IC (MACE).

Figure 3-1. APX 2000/ APX 4000/ APX 4000Li Overall Block Diagram

RF+GPS

ntenna

Main Board

Keypad

External Accessory

Connector

Controls Top

Front Display

Bluetooth

Antenna

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