Performance Checks: RF Test Mode

4-5

 

 

Table 4-6. Transmitter Performance Checks

Test Name

Communications Analyzer

Radio

Test Set

Comments

 

 

 

 

 

Reference

Mode: PWR MON

TEST MODE,

PTT to continu-

Frequency error to be

Frequency

4th channel test frequency*

Test Channel 4

ous (during the

±200 Hz VHF

 

Monitor: Frequency error

carrier squelch

performance

±500 Hz UHF

 

Input at RF In/Out

Output at

check)

 

 

 

antenna

 

 

 

 

 

 

 

Power RF

As above

As above

As above

Refer to Maintenance

 

 

 

 

Specifications

 

 

 

 

 

Voice

Mode: PWR MON

As above

As above, meter

Deviation:

Modulation

4th channel test frequency*

 

selector to mic

VHF, UHF

 

atten to -70, input to RF In/

 

 

4.0 kHz but 5.0 kHz

 

Out

 

 

(25 kHz Ch Sp).

 

Monitor: DVM, AC Volts

 

 

 

 

Set 1 kHz Mod Out level for

 

 

 

 

0.025 Vrms at test set,

 

 

 

 

80m Vrms at AC/DC test set

 

 

 

 

jack

 

 

 

 

 

 

 

 

Voice

Mode: PWR MON

TEST MODE,

Remove modula-

Press PTT switch on

Modulation

4th channel test frequency*

Test Channel 4

tion input

radio. Say “four” loudly

(internal)

atten to -70, input to RF In/

carrier squelch

 

into the radio mic.

 

Out

Output at

 

Measure deviation:

 

 

antenna

 

VHF, UHF

 

 

 

 

4.0 kHz but 5.0 kHz

 

 

 

 

(25 kHz Ch Sp)

 

 

 

 

 

DTMF

As above,

TEST MODE,

As above

Deviation:

Modulation

4th channel test frequency*

Test Channel 4

 

VHF, UHF 3.05 kHz

 

 

DTMF

 

but 3.45 kHz

 

 

Output at

 

(25 kHz Ch Sp)

 

 

antenna

 

 

 

 

 

 

 

 

 

 

PL/DPL

As above

TEST MODE,

As above

Deviation:

Modulation

4th channel test frequency*

Test Channel 4

 

VHF, UHF 500Hz

 

BW to narrow

TPL

 

but 1000 Hz

 

 

DPL

 

(25 kHz Ch Sp).

 

 

 

 

 

 

 

 

 

*. See Table 4-4

 

 

 

HKLN4215A

December 3, 2003

Page 28
Image 28
Motorola EP450 service manual Test Name Communications Analyzer Radio Test Set Comments, Test Mode

EP450 specifications

The Motorola EP450 is a robust and reliable two-way radio that has made a significant impact in the world of professional communications. Known for its solid construction and exceptional performance, the EP450 is a popular choice among various industries, including security, transportation, and event management.

One of the standout features of the Motorola EP450 is its impressive audio quality. Equipped with advanced audio processing technologies, the radio offers clear and crisp sound, ensuring effective communication even in noisy environments. This feature is particularly beneficial for users who work in fields where situational awareness and timely communication are crucial.

The EP450 operates on both VHF and UHF frequency bands, making it versatile for various communication needs. With 16 channels and a wide frequency range, users can easily switch between channels to avoid interference and ensure secure communications. Additionally, the radio offers a programmable feature, allowing users to customize button functions and settings, which enhances the overall user experience.

The battery life of the EP450 is another notable characteristic. It comes powered with a long-lasting rechargeable battery that provides extended usage on a single charge. This ensures that users can rely on the device throughout their shifts without concerns about running out of power. Furthermore, the EP450 features a battery save mode that helps conserve energy when the radio is not in use.

In terms of design, the Motorola EP450 is built to withstand tough environments. Its rugged housing is dustproof and can withstand exposure to water, making it suitable for outdoor use. Additionally, the radio's user-friendly interface includes a large display and oversized buttons, allowing users to operate it easily even with gloves or in challenging conditions.

Furthermore, the EP450 supports various accessories, such as headsets and external microphones, enhancing usability and flexibility in various operational scenarios. This adaptability allows users to customize their communication solutions based on specific needs.

In conclusion, the Motorola EP450 stands out for its superior audio quality, versatile frequency operation, long-lasting battery life, and rugged design. These features make it an indispensable tool for professionals who require reliable communication in demanding environments, proving its value across a multitude of industries.