RELM EPI 3101A User Manual

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Page 1

Page 2

TABLE OF CONTENTS

Introduction

.....................................................................................

Preparation For Use

........................................................................

Keyboard/Display Cover ...........................................................

Battery Installation ....................................................................

Antenna Installation ...................................................................

Radio Controls ................................................................................

Basic Operation ...............................................................................

Detailed Operation ..........................................................................

Display ......................................................................................

Keyboard

..................................................................................

Volume Control .........................................................................

Squelch Control

........................................................................

Channel Groups

.......................................................................

PTT Switch

...............................................................................

Code Guard Operation

.............................................................

Programming

...................................................................................

Programming

Keyboard Method ............................................

Cloning ......................................................................................

Programming From A Computer

..............................................

Accessories

.....................................................................................

INTRODUCTION

This manual covers the operation and programming procedures for

RELM’s model EPI 3101AVHF Radio. The Radio provides two-way FM communication on up to 28 channels, over a frequency range of 136 to 160 MHz, with an RF output of 3 watts.

This synthesized portable utilizes a microprocessor core allowing features and performance designed to meet the requirements of a commercial

NDI NSUR as detailed in the Purchase Description, AN/PRC-127(A)

Radio Set. Using the information in this manual will help assure optimum

and proper performance from the Radio. The Radio Set consists of the EPI 3101A Radio and the following

accessory items: LAAO126 Rechargeable Nickel-Cadmium Battery

(2),

LAA0312A Battery Charger, LAA0117 Battery Holder for 9 replaceable AA batteries, LAA0818A Flexible Antenna, LAA0203A External Speaker/

Microphone and LAA0445A Carrying Case. All of these items, except for

the Radio, are shown on page 27.

EPI 3101A User’s Manual

Page 3

PREPARATION FOR USE

KEYBOARD/DISPLAY COVER

To remove or install the Keyboard/Display Cover, remove the battery if installed. The Cover slides in grooves and latches at its bottom edge.

BATTERY INSTALLATION

A. Battery packs are available as a rechargeable type (LAA0126) or

as a non-rechargeable type (LAA01 17). Rechargeable battery packs

can be charged separately or while attached to a radio.

NOTE:

For safety reasons, rechargeable battery packs are shipped

uncharged or only partially charged. Therefore, a recharge-

able battery pack should be properly charged before use.

To install the battery pack, locate the center hub on the radio base and place it in the recess of the battery pack. Position the pack at the 30” offset, seating two metal studs in their recess. Apply upward

pressure to the pack while twisting the pack to its original position.

The metal tab will click, locking the pack in position.

To remove the battery pack, first turn the radio off. Then, as shown above, push up the metal tab on the side of the case while twisting the battery pack approximately 30° and remove it from the radio.

NOTE:

All information programmed into the radio is maintained

even when the battery pack is removed.

Periodically check the contacts on the battery pack for dirt that may

prevent a good electrical contact with the charging base.

WARNING:

Do not dispose of a battery pack in fire.

An explosion may occur.

ANTENNA INSTALLATION

Insert the flexible helical-wound antenna (LAA0818A) into the Unit’s antenna connector and turn it clockwise until it is firmly seated.

Page 4

RADIO CONTROLS

FLEXIBLE

CODE GUARD

ANTENNA

CONNECT0

RADIO WITH

KEYBOARD/DISPLAY

COVERED

(REDUCED VIEW)

EXTERNAL

ANTENNA

JACK

ACCESSORY

JACK

MOUNT

EARPHONE

JACK

(PUSH?TALK)

Annunciators -( PROG SCAN TX RX ID CG

/888.8888

7-SEGMENT LIQUID CRYSTAL DISPLAY

SPEAKER

MICROPHONE

LCD DISPLAY

KEYBOARD

EPI 3101A User’s Manual

Page 5

BASIC OPERATION

TRANSMIT

Ino

’

TURN POWER ON by turning the Volume knob

clockwise past the OFF detent. A beep sounds, indicating the radio is operational. The LCD briefly displays the current Group and then the Channel.

ELECT A GROUP

by pressing the following keys

on the keyboard:

2 (or

and then ENT.

ELECT A CHANNEL

by turning the Channel Selector

knob.

ADJUST SQUELCH AND VOLUME by turning the

Squelch knob clockwise until a rushing noise is heard. Set the volume to a comfortable level, then

turn the Squelch knob counterclockwise until the

noise stops. This is called the threshold squelch setting.

Turning the Squelch knob fully counterclockwise past the detent places the receiver in Code Guard mode. A message will be heard only when the proper Code Guard value is received.

Press the PTT (PushToTalk) switch. If installed, use the Speaker/Microphone’s PTT. When the transmitter is on, the LCD goes blank.

ALK IN A

NORMAL VOICE

With the microphone one

to two inches from your mouth. R

ELEASE THE

PTT switch to stop transmitting.

If the LCD display does not go blank when you press the PTT switch, the battery pack may need to be charged; if so, the LCD will display LobAt.

If a warbling tone sounds and the display shows

no Ch, you are on a receive-only channel or the channel is not programmed at all. Select an authorized transmit channel.

If the length of your message exceeds the preset timeout timersetting, the transmitter automatically shuts off and a tone sounds. To continue the transmission, release the PTT switch, then press

it again and continue talking.

Page 6

DETAILED OPERATION

DISPLAY

The Liquid Crystal Display (LCD) provides the User with visual information pertaining to normal radio usage such as the channel number, group number, transmit and battery status. In addition, confirmation of the

various programming steps and keyboard entries made while

programming are displayed.

KEYBOARD

The keyboard, as shown below, provides the User with operational and

programming functions as described later.

El El El E+-

Function - Used only in Programming

Mode

Clear (Erase) - Used in Operational and

Display Current Channel Group - Also

usec

in Programming Mode

VOLUME CONTROL

Rotating the Volume Control (OFF-VOL) Knob

clockwise from its detent (OFF) position turns the

Radio ON. The display will first show briefly the current Channel Group. It will then show the current Channel Number.

Rotating the Volume Control Knob fully counterclockwise to its detent position will turn the Unit OFF. The display will briefly show

LobAt

and

then go blank. The

LobAt

indication is normal at

turn off.

EPI 3101A User’s Manual

Page 7

SQUELCH CONTROL

Rotate the Squelch Control (CG-SQ) Knob clockwise from its detent (CG) position in order to hear any transmissions, regardless if they are tone or digital coded or not. This, in effect,. is the Radio’s MONITOR position. Turning the Squelch Control further clockwise until “noise” is heard permits the Volume Control to be adjusted to a desired level, even though an actual signal is not present.

CHANNEL GROUPS

678@

SELECT A GROUP

I I

GROUP NUMBER

‘nogrp05i

The Channel Selector knob has 14 positions. The

Radio has 28 channels which are separated into two “groups” of 14 channels each. Group 01 is factory programmed for narrow channel (12.5

kHz) FM reception. Channel Group 02 is

programmed for wide channel (25 kHz) FM

reception. Use Group 02 for proper communication with the original AN/PRC-127 Radio.

RESS THE

KEY

on the keyboard to display the current Channel Group number. If it isn’t the desired Group, proceed to the next step.

RESS A NUMBER KEY

for the new Group number.

RESS THE

ENT

KEY

or wait about 5 seconds; the radio returns to normal operation for the new group, and the channel corresponding to the

Channel Selector’s position is displayed in the

LCD. If an invalid number is selected (05 for example)

when selecting a Channel Group, the LCD displays

nogrp05

(no Group 05) immediately if

ENT

pressed, or in about 5 seconds if not pressed.

Then, after 5 seconds, the radio returns to the

previously selected group.

Page 8

Rotate the Channel Selector knob to the desired channel. Please note that not all 14 channels may be programmed. Therefore, select only an authorized (programmed) channel for communication purposes.

PTT SWITCH

Ch :z

The PTT (Push-To-Talk) Switch activates the

Radio’s transmitter section when pressed and held in. The display goes blank, indicating the

transmitter is activated. When

the

PTT

switch is released, the transmitter

is deactivated and the display shows the current Channel Number and, very briefly, the small TX annunciator.

If the length of the message or transmission

(PTT

held in) exceeds the Radio’s programmed

Transmit Timeout

value, the transmitter will automatically shut off and an error tone will be heard. In addition, the display will show the current Channel Number and the small TX annunciator. To continue with the transmission, momentarily release the PTT switch, press it

again

and then

resume talking.

REMINDER:

If you forgetwhat thecurrent Channel Group is, press # and the display will show the Group’s number. Press the

ENT

key or wait about

5 seconds and the display will return to showing

the current channel.

EPI 3101A User’s Manual

Page 9

CODE GUARD OPERATION

Code GuardTM, Tone or Digital, allows one radio or group of radios to be selectively called within a system. If the radio has been programmed

with Code Guard, use the following receive and transmit instructions.

CODE GUARD RECEIVE

TURN POWER ON by turning the Volume knob

clockwise past the OFF detent.

SELECT A CODE GUARD CHANNEL by turning the

Channel Selector knob.

ADJUST VOLUME by turning the Squelch knob

clockwise until a rushing noise is heard, then

turning the Volume knob to a comfortable level.

SET CODE GUARD MODE by turning the Squelch

knob completely counterclockwise, past the detent to the CG position. A message will be heard only when the proper Code Guard value is received.

CODE GUARD TRANSMIT

URN THE

QUELCH

KNOB

clockwise, off the detent.

MONITOR THE CODE GUARD CHANNEL before

transmitting.

PRESS THE PTT (Push-To-Talk) switch if the

channel is not busy (signal is not present). When the transmitter is activated, the LCD goes blank.

RESET THE SQUELCH KNOB to the Code Guard

position (CG) to receive only the messages with the proper Code Guard value. During extended transmissions the squelch can be left open (off the detent) until the exchange has ended.

Code Guard is a trademark of BK Radio, Inc.

Page 10

PROGRAMMING

There are three different ways to program an EPI 3101A radio:

A. It can be programmed and/or reviewed using its internal keyboard.

This section of the manual describes that procedure.

Another radio (MASTER) with the desired information can transfer

its programmed settings to the radio (SLAVE) by using a cloning cable, LAA0700. See “Cloning” on page 23.

It can be programmed from a computer by using a special RS-232 interface cable. That procedure is not described in this manual.

See page 26 for more details.

PROGRAMMING - KEYBOARD METHOD

Radios are shipped with a removable door covering the keyboard and

display. Before programming or reviewing, remove the door. First,

remove the battery pack if installed. Then, engaging the door just below

the speaker grill, slide the door downward. Reinstall the battery pack.

Make sure the battery pack is charged.

Turn the radio on.

Select the Channel Group to be programmed or reviewed.

Press and hold the

FCN

key. After approximately three seconds, the LCD will display

- - -

Id.

Release the

FCN

key. The radio is now in

the password entry mode.

Enter the six-digit Password Code.

IMPORTANT:

VVithout

the correct Password Code, you cannot proceed with reviewing or programming. The same Password Code is used for both Channel Groups.

New radios shipped from the factory are

assigned the Password Code 000000. While entering the Password Code, the

display will not change, but a beep will sound for each key pressed. If the

Password Code is entered incorrectly, the radio will reset to normal operation. Try

again, starting at step 3.

EPI 3101A User’s Manual

Page 11

To keep the Password Code unchanged,

I------

radio programming

press the

ENT

key and continue with normal

To change the Password Code, press the

FCN

key and enter a new six-digit password code. The’digits are now displayed as you enter them. The Password Code can contain the digits 0 through 9, *, and #. The *

is represented as a b and the # is

represented as an A in the display.

IMPORTANT:

Do NOT use a 1 for the first digit

of the Password Code

the radio will

malfunction. It will then require using a computer program to correct the Password Code and put the radio back into normal operating condition.

If you make an errorwhile entering the new

Password Code, press the

CLR

key and

try again.

I”ehl

Press the

ENT

key to store the new

Password Code and proceed to the programming mode. The display will change to

PROG Ch 0.

The Radio is now

ready for Reviewing and/or Programming.

TO REVIEW GENERAL RADIO PERFORMANCE VARIABLES (CHANNEL 0):

Channel 0 is the portion of the program that controls the general performance variables for each Group of 14 channels in a 28-channel radio. Thus, the Channel 0 settings for each Channel Group must be reviewed or programmed separately.

NOTE:

Settings listed as Group One Functions and Group Two

Functions refer to reviewing or programming Function Groups, not the two Channel Groups 01 and 02.

Page 12

Channel 0 Settings for each Channel Group include:

Factory Program

Description Setting Display

ID or Automatic Number Identification (ANI)’

1234567 1234567

Transmit Timeout Timer

disabled

0 sec.

Scan Delay Time

disabled 0.0 sec.

Group One Functions 1-12345

Battery Saver lnhibit 1-1 (See Note 3)

disabled

1-12345

Priority Scan Operation 1-2 & 3

disabled

1-12345

\I/

Priority Key Lockout

1-4

enabled

1-12345

/I\

\I/

Scan List Lockout 1-5

enabled

1-1 234,5,

Group Two Functions 2-12345

User Code Guard Selection 2-1 disabled

2-12345

Busy Channel Operation 2-2 & 3

disabled

2-12345

ID or ANI Enable 2-4

disabled

2-12345

DTMF Enable 2-5 disabled

2-12345

NOTES:

The ID Number is initially used for production purposes and the

Number shown is only an example. Only the ID, Transmit Timeout Timer and Battery Saver Inhibit

may be changed from the Factory settings. Scan Delay Time and all other Functions should not be changed.

It is highly recommended that the ID, Transmit Timeout Timer and Battery Saver Inhibit settings be the same for Channel Group 01 and Channel Group 02.

Battery Saver Inhibit should be enabled only in order to get proper voltage readings when the Unit is being serviced, or if the system in which the Unit is being used requires an extremely fast squelch attack time. However, the Radio’s current drain and battery life specifications are based upon the Battery Saver being turned on.

\I/

;1,

for example, indicates that Function (l-1) is enabled and its

corresponding number(s) in the display is flashing.

When

Function is disabled, its corresponding number(s) is steady.

EPI 3101A User’s Manual

Page 13

After entering the Program Mode, the

display will show

PROG Ch 0.

Press the

FCN

key. The display will show

]:pshj

length).

an ID number (up to seven digits in

IPROG

TX 1

Press the

FCN

key. The display will show the Transmit Timeout Timer length in seconds.

Press the

FCN

key. The display will show the Scan Delay Time in seconds.

Press the

FCN

key. The display will show the five individual Functions of Group One that are enabled or disabled.

Press the

FCN

key. The display will show the five individual Functions of Group Two

that are enabled or disabled.

Press the

FCN

key. The display will loop

back to the Channel 0 entry point and show

PROGChO

ENTRY POINT

TO REVIEW FREQUENCIES AND CODE GUARD FOR AN INDIVIDUAL CHANNEL IN THE SELECTED CHANNEL GROUP:

PROG RX CG

I-

After entering the program mode, the display will show

PROG Ch 0.

Press

CLR

and then press the digit key(s) of the channel that needs to be reviewed. The display will show the channel to be reviewed.

Press the

FCN

key. The display will

show the receive frequency in MHz.

Press the

FCN

key. The display will show the receive Tone Code Guard or Digital Code Guard (the value 0.0 denotes carrier squelch). Digital Code Guard will be a three digit

number preceded by a

in the

display.

DIGITAL CODE GUAROTY

Page 14

Press the FCN key. The display will show the transmit frequency in MHz.

Press the FCN key. The display will show the transmit Tone Code Guard or Digital Code Guard. (Inverted

Digital Code Guard illustrated.)

Press the FCN key. The display will

loop back to the entry point and display the reviewed channel.

I PROG

Press PRI to increment the channel

number by 1, or press CLR and then

press the digit key(s) of the next channel to be reviewed. The FCN

key can then be used to review the frequencies and Code Guard of this

next channel.

To leave the programming mode, power the unit down by rotating the volume knob counter clockwise to the OFF position. Normal operation will occur on the next power up.

TO PROGRAM GENERAL RADIO PERFORMANCE VARIABLES (CH 0) OF THE SELECTED CHANNEL GROUP:

A. To Set the ID Number

PROG

After selecting the desired Channel

Group (01 or 02) and entering the program mode (see page

9),

the

display will show PROG Ch 0.

Press the FCN key.

The display will be blank or will show a one to a seven digit ID number. This ID number is intended as an electronic serial number for radio system management purposes.

EPI 3101A User’s Manual

Page 15

4a. If no change is needed for the ID

number, press FCN to advance to the next section.

4b. If necessary, a new number can be

entered by pressing

CLR,

followed

by any number consisting of one to seven digits. The digits will appear at the right of the screen and move to the left as more digits are entered.

Press

ENT

to store the new ID

number and automatically advance to the next section.

4c. If desired, the existing ID number

can be incremented by 1 by pressing

PRI.

Then press

ENT

to store the

new ID number and automatically advance to the next section.

To Set the Transmit Timeout Timer

After the ID number is set, the upper display will show

PROG TX.

This is the duration of the Transmit Timeout Timer. 0

SEC

means that the Timeout Timer is disabled and the Unit will transmit as long as the PTT switch is held in.

If no change is needed, press

FCN

to advance to the next section.

The Timeout Timer length can be changed by pressing the

PRI

CLR

key. Each press of the

PRI

key will increment or increase the length by 15 seconds, up to 225 seconds (3 minutes, 45 seconds).

Another pressafter 225 seconds

resets the value to 0. Pressing the

CLR

key will automatically reset the

value to 0. Press

ENT

to store the chosen value and automatically advance to the next section.

Page 16

To Set the Scan Delay Time

After the Timeout Timer is set, the upper display will show

PROG

SCAN.

This is the duration of the Scan Delay Time in seconds.

Since the radio does not have a Scan

feature, no change is needed. Press

FCN

to advance to the next section.

NOTE:

It is highly recommended to leave

the Scan Delay Time at 0 seconds.

Miscellaneous Channel 0 Programming -GROUP ONE FUNCTIONS

After the Scan Delay Time is shown, the

display will show

PROG I- 12345.

This is a group of five individual functions that can be enabled or disabled.

NOTE:

See page 11 for Description and

Factory Settings information.

When a Function is enabled, the corresponding number in the display will flash. When the Function is disabled the

number is steady. If you wish to change

the Function from enable to disable, or vice versa, press the number key corresponding to that Function.

Once each Function 1-5 is set as desired,

press

ENT

to store them into memory and automatically advance the program to the next section.

If no changes have been entered, press

FCN

to advance to the next section.

GROUP ONE Functions

PROG

Battery Saver Inhibit - If needed, press the

key to change the Battery

Saver’s status.

BATTERY SAVER ON

REMINDER:

If 1 is steady, the

Battery Saver Inhibit is disabled,

EPI 3101A User’s Manual

Page 17

2 & 3.

1 PROG

I /

PdlORlTV CHANNEL NOT CHANGEABLE

SCAN LIST NOT CHANGEABLE

Functions 2 and 3 are used to define Priority Scan operation. Since Priority Scan is not available, both 2 and 3 should be steady.

PRI

Key Lockout-When enabled

(flashing) the

PRI

key will be locked out in the operating mode. Because the PRIORITY feature is not available, the 4 should be flashing.

Scan List Lockout -

VVhen

enabled (flashing), the User will not be able to change the channels in the scan list. Since SCAN is not available, the 5 should be flashing.

Once each function l-5 is set as desired, press

ENT

to store them

into memory and automatically

advance the program to the next

section. If no changes have been entered,

press

FCN

to advance to the next

section.

Miscellaneous Channel 0 Programming-GROUPTWO FUNCTIONS

After Group 1 functions are set, the

display will show PROG 2-12345 for

Gyp

functims.

with

Group

functions, the enabled function number will flash. The disabled functions remain

USER CODE GUARD ENABLED

User Code Guard Selection - When

disabled (steady), the keyboard can

not be used for Code Guard Selection while in the Operating mode. The

should not be flashing.

PROG

USER CODE GUARD DISABLED

NOTE:

Functions 2 through 5 are reserved for future options and should remain disabled (steady) at this time.

Once Group Two functions are set, press

ENT

to store the functions into memory. The display will revert back to the

Ch 0

entry point.

Page 18

G. To Review Channel 0 Values

Repeated pressing of the

FCN

key will display each value in Channel

0, then loop back to the

0 entry point. To program the Channels

1 through 14, continue with the next Section. To quit programming,

go to page 20 for details.

TO PROGRAM CHANNEL FREQUENCIES AND CODE GUARD VALUES:

Once Channel 0 programming is complete, the display will show

PROG Ch

0. Any channel number 1 through

can now be pressed to allow access to the frequency and Code Guard values for that channel in its Group (01 or 02).

IMPORTANT:

To improve the interoperability clarity between the

AN/PRC-127(A) and the AN/PRC-127 Radio Set, two separate

channel Groups are designated in the AN/PRC-127(A) Radio Set and must be programmed to receive the same frequency in both Groups (01 and 02).

Example:

VVhen

programming a 127A, a channel in Group 02 can be programmed to receive on 160.000 MHz with a “127 characteristic” receive mode. At this time, the same channel in Group 01 can be programmed to receive on 160.000 MHz with a

"11

27A characteristic“ receive mode.

IPROG

NO RECEIVE FREQUENCY

Press

for example, and the display

will show

PROG Ch 1.

This is the

entry point for channel 1 values.

Press

FCN.

The display will show

PROG

RX and the Receive

Frequency (in MHz) for channel

RX stands for Receive Frequency.

If the channel has not been

programmed yet, the display will show

PROG RX 0.0.

If the displayed frequency is correct,

press

FCN

to advance to the next

value. To initially program the frequency or

if a new frequency is desired, press

CLR

followed by the digits of the desired frequency from left to right. Then press ENT to store this

, frequency and automatically

advance to the next value. See Table 1 on page 18 for proper

frequency increments.

EPI 31OlA Usefs Manual

Page 19

lOOkHz(O-9)

_IID

xxx.

x000

050

100 125

150 200 250 300 350 375 400 450 500 550

600 625 650 700 750 800 850

875 900 950

lOkHz(O-9) 1

kHz(0,2 or5)

1kHz(O or 5)

Table

1. Proper Frequency Increments.

Page 20

After the Receive Frequency is set, the upper part of the display will

show

PROG

RX CG. This is the Code Guard value for Channel 1 receive. Note: 0.0 indicates carrier

squelch operation.

If the displayed value is correct, press

FCN

to advance to the next value.

If a new value is desired, press the

CLR

key to reset the display to 0.0.

Tone Code Guard is entered directly,

using the digit keys (0 through 9). See pages 21 and 22 for proper Code Guard values.

Digital Code Guard is entered by

first pressing

CLR,

then the # key,

causing the letter d to appear,

L INDICATES

INVERTED

followed by the proper three digit

CODE

code (0 through 7 keys only; 8 & 9

respond as a 7). Pressing the

PRI

key after the three digit code has been entered allows the digital code

to be inverted.

VVhen

the displayed

value is correct, press

ENT

to store the Code Guard and automatically advance to the next value.

After the receive Code Guard is set, the upper part of the display will show

PROG TX.

This is the Transmit (TX) Frequency for Channel 1. If it is correct, press

FCN

to advance to the next value.

To program or change it, press

CLR

followed by the frequency in (MHz)

and then ENT to store the new

NO TRANSMIT FREQUENCY

frequency and automatically

advance to the next value. Only frequencies from 136 to 160

MHz in increments of 5 or 12.5 kHz

will be operable. See Table 1 on

page 18 for proper frequency increments.

EPI 3101A User’s Manual

Page 21

PROG

L INDICATES

INVERTED CODE

After the Transmit Frequency is set,

the upper part of the display will show

PROG TX

CG. This is the Code Guard value for Channel 1 transmit (0.0 indicates carrier squelch). If this value is correct, press

FCN

to advance to the next

value.

If a new value is desired, press the

CLR

key to reset the display to 0.0.

Tone Code Guard is entered directly,

using the digit keys (0 through 9). See page 21 for proper Code Guard

values.

Digital Code Guard is entered by

first pressing

CLR,

then the # key, causing the letter d to appear, followed by the proper three digit code (0 through 7 keys only; 8

respond as a 7). Pressing the

PRI

key after the three digit code has been entered allows the digital code to be inverted.

VVhen

the displayed

value is correct, press

ENT

to store the Code Guard and automatically advance to the next value.

After the transmit Code Guard is set,

the display will loop back to the Channel 1 entry point. If you wish to review the frequencies and Code Guard values in Channel

subsequent pressing of the

FCN

key will show each value and then loop back to the Channel 1 entry point again.

To program another channel, return to Step 1 on page 17 and key in the desired channel’s number.

TO LEAVE THE PROGRAMMING MODE:

Rotate the OFF/Volume knob on top of the radio counterclockwise to the OFF position.

Normal radio operation will occur the next time the radio is

turned on.

Page 22

SELECTING A TONE CODE GUARD The Tone Code Guard system (CTCSS) may be set for any frequency

in the range of 67 to 250.3 Hz. However, since most systems adhere to the Electronic Industry Association (EIA) standards, tones should be selected from the following EIA list.

In order to insure optimum performance tone selection for use on the same radio frequency (RF) channel or adjacent channels in the same coverage area should be made from one of the Groups A, B, or C as much as possible. RELM guarantees optimum receiver performance only if tone frequencies below 220 Hz are chosen.

GROUP A GROUP B

GROUP C

67.0

77.0

88.5

*100.0

107.2

114.8

123.0

131.8

141.3

*151.4

71.9

146.2

74.4

162.2

82.5

156.7

79.7

173.8

94.8

167.9 85.4

186.2 103.5

“179.9

91.5

203.5

100.9 192.8

218.1

*118.8 210.7

233.6

127.3

225.7

250.3 136.5 241.8

50/60 Hz power distribution systems could cause falsing.

The assignments in a given area shall be made from one of the Groups A, B, or C as much as possible.

EPI

3101A

User’s Manual

Page 23

SELECTING A DIGITAL CODE GUARD Codes for the Digital Code Guard system (CDCSS) may be chosen from

the following list. For the performance or compatibility of Digital Code Guard systems, it is recommended that an operational test be made on the intended system before wholesale assignments are made.

In some cases, either one or both the transmit and receive codes will require an inverted code* to operate with existing systems. This can be done during the code programming of the system.

Usually, systems using direct unit to unit transmission (systems without

mobile relays, repeaters, remote control, etc.) may use codes from the table. Systems with relays, etc. may use code variations for system control and operational efficiency. The system operator or engineer should be consulted regarding the operational requirement on such systems.

023

065 131 172 251 331 412 466 612 703

025

071

132 174 261 343 413 503 624 712

026

072 134 205 263 346 423 506 627 723

031

073 143 223 265 351 431 516 631 731

032

074 152 226 271 364 432 532 632 732

043

114 155 243 306 365 445 546 654 734

047

115 156 244 311 371 464 565 662 743

051

116 162 245 315 411 465 606 664 754

054

125 165

*NOTE:

Inverted code is displayed with a

"-"

following the Digital

Code’s value. See page 20 for an example.

Page 24

CLONING

STANDARD INSTRUCTIONS

Any MASTER radio (an EPI 3101A with the desired radio frequencies and settings) is capable of transferring its program to another EPI 31

01A or SLAVE. The radio receiving the program also is referred to as the CLONE. The LAA0700 Cloning Cable will be required in the following

procedure.

Make sure that the battery packs for both radios are charged.

Attach the MASTER switch end of the cloning cable to the side connector of the MASTER radio. (Note: one plug of the cloning cable has a push button MASTER switch. This plug must be attached to the MASTER radio.)

Power up the MASTER radio by rotating the off/volume knob clockwise past the detent.

IMPORTANT:

The MASTER and CLONE radios must be set to the same Channel Group before cloning is started. Do NOT clone Channel Group 01 to Group 02 or vice versa.

To put the MASTER radio in the

programming mode, press and hold the MASTER switch. Then press

the

FCN

key until the display shows

PROG Ch 0.

Review the values in the program.

Any changes required must be made at this time.

Connect the other plug of the cable to the side connector of the radio to be cloned.

Power up the CLONE and set it to the proper Channel Group.

EPI 3101A User’s Manual

Page 25

Press the * key on the MASTER radio keyboard. The display will flash

PROG

signifying that the radio is ready to download its program to the CLONE.

Press the

FCN

key on the MASTER

radio keyboard. The program in the

MASTER will then be downloaded to the CLONE. The CLONE will automatically send back the program to the MASTER to verify a successful cloning.

10. If the download was successful, the MASTER’s display will resume flashing

PROG.

A. To clone the other Channel

Group, power down both radios and go to Step 3, changing the Channel Group as required.

If finished cloning, power down the CLONE and disconnect the cloning cable. Normal radio operation will occur on the CLONE’s next power up.

11. If the download was not successful, the MASTER will display

FAIL

and

multiple beeps will follow. Failure of

downloading can be due to: A. Improper connection

Failure to power up CLONE

CLONE set in the programming mode

NOTE: To stop the FAIL mode,

press

CLR,

power down both radios

and try again, starting at step 1 on

page 23.

Page 26

SPECIAL CLONING INSTRUCTIONS It is possible to change Channel 0 values on the MASTER radio, hold

them in a temporary memory, and download them to the CLONE without

actually entering them into the permanent memory of the MASTER. This is convenient if sequential identification numbers are used to identify a series of portables in a radio system. Assuming that the frequencies, Code Guard values, and other CH 0 values are common for all radios in

the system, but that the radio identification number should be unique to

each radio, the following method would be used to clone additional radios

for the system:

Program the MASTER with all

frequencies, Code Guard values and

Channel 0 values that will be common to all radios.

Advance the display to show the

MASTER’s ID number (for example

100)

Press

CLR;

press

1,2,

and 5.125 is

now only in temporary memory. Press *, connect the cloning cable to

the CLONE radio and download by

pressing

FCN.

ID number 125 is

now stored in permanent memory of

the CLONE. After download, press

CLR.

Disconnect the CLONE. The MASTER radio display will show

that

125

is still being held in the

temporary memory of the MASTER.

Press

PRI.

This will increment the

ID number one digit to

126.

NOTE: Any new number can be

entered at this point by pressing

CLR and using the digit keys to

enter the new number.

EPI

3101A

User’s Manual

Page 27

Press *. Connect the cloning cable

to the next CLONE radio and

download by pressing FCN.

Any number of radios can be coded with different or sequential ID

numbers using this technique. The ID number in the permanent memory

of the MASTER will remain

unchanged as 300.

PROGRAMMING FROM A COMPUTER Programming the radio from an IBM compatible computer, using the

LAA0725 Interface Cable, is covered in a separate programming manual.

The manual is included with the programming software. Contact RELM

Communications, Inc. to order the interface cable and software. Specify

the program is for the EPI 3101A Radio.

Page 28

ACCESSORIES

The accessories shown are part of the AN/PRC-127(A) Radio Set.

LAA0818A

LAA0445A

LAAO126

LAA0312A

Desktop Charger

Rapidly recharges the LAA0126 battery pack to 90% of capacity, then switches to a trickle rate to maintain the charge without damaging the battery pack. Red and Green LED indicators confirm proper contact with the battery and show the charge rate. An input voltage selector switch, located on the bottom panel, allows for either 115 VAC or 230 VAC operation. The proper selection should be made before the Charger is plugged into the voltage source.

LAAO126 Nickel-Cadmium Battery Pack

High capacity (1200 mAH) rechargeable battery pack. Two packs (one spare) are shipped with the Radio Set.

LAA01

17 Battery Holder

Allows the use of replaceable AA alkaline batteries when recharging of the LAA0126 battery pack is not available. The Holder, as shown, is only

partially opened. Slide the cover all of the way up in order to install the 9 batteries. Then slide it back down until it snaps in place.

EPI 3101A User’s Manual

Page 29

Helical-wound flexible antenna that covers the entire range of frequencies that can be programmed into the EPI 3101A Radio.

LAA0445A Carrying Case

This textile case is built to provide proper protection while keeping the radio at your side.

LAA0203A Speaker/Microphone

This light weight speaker/microphone clips securely to collar or lapel,

offering the convenience of easy communications without removing the radio from your belt. To install the LAA0203A:

Lift away the protective cover from the Accessory connector and Earphone jack. See Radio’s side view on page 3 for their location. The protective cover can not be completely removed since it is permanently attached near the flexible antenna’s connector.

Carefully install the Speaker/Microphone’s connector assembly into the Accessory and Earphone connectors.

Screw in the assembly’s retaining bolt until finger tight. Do not overtighten.

NOTE:

VVhen

the LAA0203A is removed, the protective cover

should be reinstalled so that the various electrical

connections are not exposed to dust, dirt, rain, etc.

Page 30

RELM Communications, Inc. 7505 Technology Drive

West Melbourne, FL 32904

Telephone: (407) 984-1414 FAX: (407) 676-4403

P/N 700 I-20257-900

1-97