User Manual

DM15/25 Integrator’s Manual 13 OF 38
4.1.2 General Electrical and Logical Characteristics
Many of the signals present in the interface are CMOS signals where the following levels apply.
CMOS Output / Input electrical
characteristics
Parameters Test conditions Limits Units
Min. Typ. Max.
High level output voltage (I
OH
= 800 µA)
V
OH
0.9 * VDD VDD Volts
Low level output voltage (I
OL
= 800 µA)
V
OL
0 0.1* VDD Volts
High-Level Input Voltage (V
IH
)
V
IH
0.8 * VDD VDD Volts
Low-Level Input Voltage (V
IL
)
V
IL
0 0.2 * VDD Volts
Logic Voltage Min Nominal Max Units
VDD
3.3 3.4 3.5 Volts
4.1.3 Power Interface
The module is able to operate in several modes and different output power levels. Typical applications
require output power levels similar to those in a handheld cellular phone, which is considered a power class
IV unit for dual mode operation. It is possible to increase the output power level to that of a class I unit (4 W
nominal) during the 5 second analog burst data mode. Table 1 below shows the nominal output power levels
(Effective Radiated Power, assuming an antenna system gain of 1 dBd (2.5 dBd antenna gain with 1.5 dB
cable loss)).
Mobile Station Power Level (dBW)
0 1 2 3 4 5 6 7 8 9 10
Class I, AMPS
6 2 -2 -6 -10 -14 -18 -22 -22 -22 -22
Class II, AMPS
2 2 -2 -6 -10 -14 -18 -22 -22 -22 -22
Class II TDMA
2 2 -2 -6 -10 -14 -18 -22 -22 -22 -22
Class IV, TDMA
-2 -2 -2 -6 -10 -14 -18 -22
-27±3 -32±4 -37±5
Class IV, PCS
-2 -2 -2 -6 -10 -14 -18 -22
-28±3 -33±4 -38±5
Table 1. Mobile Station Nominal Power Levels
*Note: Output power levels maintained within range of +2 / -4 dB for PL0-7
Power levels 8-10 are valid for digital mode only, maintained within range of +2 / -6 dB