Midian Ddu-100 User manual

DDU-100/200

MIDIAN ELECTRONICS, INC.

To Order: 1-800-MIDIANS 2030 N. Forbes Blvd. #101

Telephone: (520) 884-7981 Tucson, Arizona 85745

Email: sales@midians.com

DDU-100

Local Remote Controller with DTMF Encode & ANI Decode

DDU-200

Local Remote Controller with 5-Tone Encode & ANI Decode

INSTRUCTION MANUAL

Model Features

10 entry ANI recall memory

137 entry alias database

Auto-mute leading ANI

Alternate function as a repeater access controller

Programmable encode/decode format

Supports DTMF and several 5-tone formats

Easy to read backlit LCD display

Serial printer logging (w/optional cable)

MANUAL REVISION: 2013-07-22

COVERS PRODUCT SOFTWARE VERSION(S):

1.1 _____ _____ _____ _____

WITH ENCODER/DECODER VERSION(S):

1.7 _____ _____ _____ _____

DDU-100/200 Manual

1 SPECIFICATIONS

Voltage/Current

Operating Voltage (nominal) .................................12 VDC

Operating Voltage (min-max) ...........................12-15 VDC

Operating Current (standby @12 VDC).................100 mA

Operating Current (peak @15 VDC)......................500 mA

Inputs

Input Level (RX) ..................................... 100-3000 mV p-p

Input Impedance (RX).............................................> 10k

Outputs

Output Level (TX, unloaded).................. 150-2500 mV p-p

Output Impedance (TX)........................ 27kwith JU4 cut

Speaker Audio Output..................................... 1 W into 8

Mechanical

Dimensions: ......................................2⅞"H x 6½W x 8¾"L

Operating Temp ................................................0° to 50° C

Encode/Decode Formats

DTMF, CCIR, EEA, EIA, ZVEI, DZVEI, DDZVEI, NATEL,

and MODAT.

Other

Max ANI Length ......................................................8 digits

ANI Recall Stack Size .................................................. .10

Alias Database Size ....................................................137

MIDIAN ELECTRONICS INCORPORATED PAGE 3

DDU-100/200 Manual

TABLE OF CONTENTS

1SPECIFICATIONS ...........................................................................................................................2

2OVERVIEW ................................................................................................................................4

3INSTALLATION INSTRUCTIONS..............................................................................................4

3.1 RADIO INTERFACE.................................................................................................................................4

3.2 JUMPER SETTINGS................................................................................................................................5

3.3 ADJUSTMENTS......................................................................................................................................5

3.4 CONFIGURATION SETTINGS...................................................................................................................5

4BASIC OPERATION ..................................................................................................................5

4.1 DISPLAY MODE.....................................................................................................................................5

4.2 MENU MODE.........................................................................................................................................6

4.3 USER DATABASE ..................................................................................................................................7

4.4 STATUS DISPLAY FEATURE ...................................................................................................................8

5MENU SYSTEM..........................................................................................................................8

5.1 CALL COMMAND...................................................................................................................................8

5.2 LOCK OR UNLOCK COMMAND.............................................................................................................8

5.3 ACTIONS MENU...................................................................................................................................8

5.4 USERS MENU......................................................................................................................................8

5.5 SETUP MENU.......................................................................................................................................9

6SYSTEM ERROR MESSAGES................................................................................................14

7MENU SYSTEM MAP...............................................................................................................15

PAGE 4 MIDIAN ELECTRONICS INCORPORATED

DDU-100/200 Manual

2 OVERVIEW

The DDU provides the optimal ANI display decoder

solution for small and medium sized radio systems

such as those used by taxi fleets, police departments,

construction crews, etc. It offers many features

normally found only in large and expensive Computer

Aided Dispatch (CAD) systems in one compact

desktop unit.

It can encode and decode most popular tone signaling

formats. The last 10 ANI's received can be reviewed at

any time. It can store up to 137 aliases in its user

database. The user friendly menu system makes it as

easy to use as a cell phone. Additional features include

status display and the ability to automatically mute

incoming leading ANI's

3 INSTALLATION INSTRUCTIONS

Installation Note: Midian products utilize CMOS integrated

circuits, which are susceptible to damage from high static

charges. Be sure to follow standard antistatic procedures

when handling, including using grounded workstations and

soldering irons and wearing grounding bracelets.

3.1 RADIO INTERFACE

Radio Interface connector P1 is an 8-pin

RJ-45 style connector in the center of the

back panel.

+V IN (P1-5) [Red]

The DDU can be powered either by an optional wall

transformer or by the radio power supply. Connect this

wire to the radio power source provided it is between

12 and 15 VDC.

If using a wall transformer, make sure the voltage is

between 12 and 15 VDC and the current rating is at

least 800mA. Also, be certain that positive is

connected to the inside ring.

GROUND (P1-6) [Black]

Connect to radio ground.

AUDIO INPUT/RX IN (P1-8) [Blue]

Connect to a point in the radio where receive audio is

present at a constant level. If using PL or CTCSS, be

sure to connect to a point after the CTCSS high pass

filter. If using the Squelch Output of the DDU, be sure

the RX audio point is not muted when the radio is

squelched.

AUDIO OUTPUT/TX OUT (P1-4) [Green]

Connect to the mic-hi input of the radio. The output

impedance of the DDU can be adjusted if necessary by

replacing leaded resistor R81 with an appropriate

value.

PTT OUTPUT (P1-3) [Yellow]

This open collector output provides a ground to key-up

the radio when transmitting. If connecting to a relay in

the radio, make sure the coil is bypassed with a diode

to eliminate counter-EMF.

This output may also be assigned to be the repeater

access control output. See REPEATER SETUP for

more information.

COR INPUT (P1-1) [Gray]

Connect to a point in the radio squelch or CTCSS

circuit that changes logic level when carrier (or

CTCSS) is detected. A radio whose circuitry provides a

logic-low or logic-high can readily turn Q1 on and off. If

only a high level is provided, it may be necessary to

move R40 from its pull-up to its pull-down position.

Note that it is required that the COR Input be in the

active state in order to decode all formats except

DTMF. If COR is not to be connected, make sure it is

programmed to be active HIGH. A COR connection is

required in order to use busy lockout, auto ANI mute,

and repeater access control features.

MONITOR OUTPUT (P1-7) [Orange]

This output can be used to control the monitor function

of the radio using the <MONITOR> button on the DDU.

This is an open collector output which changes state

each time the <MONITOR> button is pressed.

This output may also be assigned to be the repeater

access control output. See REPEATER SETUP for

more information.

SQ OUT/LTR IN (P1-2) [Brown]

This wire may be either a Squelch Output or a

Trunking Delay (LTR) input, but not both. To use as a

squelch output, install jumper R85 and make sure

jumper JU5 is not installed. To use as a trunking delay

input, remove R85 and install JU5.

When used as a Squelch Output, connect to a point in

the radio which will mute the speaker when brought to

ground (or left floating). Program the appropriate

polarity in the RADIO SETUP menu.

When used as an LTR Trunking Delay Input, connect

to a point in the radio which changes state between 0

and 5 VDC when a channel has been acquired on the

LTR trunking system. The active (channel acquired)

state of this input is programmable in the RADIO

SETUP menu.

MIDIAN ELECTRONICS INCORPORATED PAGE 5

DDU-100/200 Manual

3.2 JUMPER SETTINGS

There are two user configurable jumpers, JU1 and

JU4. Both are installed at the factory. JU1 allows

signaling audio to be heard in the local speaker. If this

is not desired, cut JU1.

JU4 controls the output impedance of transmit audio.

See OUTPUT LEVEL below to determine if JU4 will

need to be cut.

3.3 ADJUSTMENTS

Once the unit has been connected to the radio, several

adjustments must be made to achieve proper

operation. It will be necessary to open the unit. Use the

pictorial to identify the location of the following trim

pots: R2 and R32 near connector P3, R51 near IC U6,

and R105 near the volume control.

INPUT LEVEL (when using decode feature)

Use a service monitor to generate a 1000 Hz test tone

at 2/3 of maximum system modulation (typically 3.3

kHz). Measure the voltage appearing at TP1 and

adjust R2 such that TP1 is at 250mV RMS.

OUTPUT LEVEL (when using encode feature)

Use a service monitor to measure the modulation level

generated by the DDU. Cause the DDU to generate

tones by typing in a few digits and pressing <SEND>.

Adjust R51 so that the modulation level is at 2/3 of the

maximum system modulation (typically 3.3 kHz).

If the output level cannot be adjusted low enough, it will

be necessary to cut JU4. This changes the output from

low impedance to high impedance.

Tip: EIA format tone 3 is 1023 Hz. Programming the

encode format to EIA and setting encode time to 2000

milliseconds provides a handy test tone. Simply enter

the digit 3 and press <SEND> for 2 seconds of test

tone.

SPEAKER PRE-AMP

Though the DDU has a volume control knob, it also

has an input audio pre-amplifier. While listening to

audio on the channel, adjust R32 so that the minimum

and maximum volume control settings are at desired

levels.

3.4 CONFIGURATION SETTINGS

Once adjustments have been made, it will be

necessary to configure the DDU to meet the system

requirements. This is done via Menu Mode. The most

crucial settings include Decode Format and Encode

Format (if using encode feature). Refer to ENC/DEC

SETUP menu item. Pay close attention to Encode

Time 1 & 2 and Decode Time as well.

It is also important to program COR Polarity to match

that of the radio. If this is not set properly, the DDU will

not decode some of the formats.

Be sure to set the time of day via TIME SETUP once

the DDU is operating as desired. Once the time is set,

be sure to leave the unit on at all times or else the time

will have to be reset. The time can only be set to the

nearest minute. Seconds are kept track of internally

and start running the instant the unit is turned-on. It is a

good idea to check the time clock monthly as crystal

and temperature variances affect the accuracy.

4 BASIC OPERATION

4.1 DISPLAY MODE

The DDU operates either in Display Mode or Menu

Mode. In display mode, the DDU normally displays the

last ANI received.

4.1.1 Reading the Display

ID (ANI) – This is the numeric ID (or ANI) of the user

who last transmitted on the channel. When the Status

Feature is enabled, this area will alternate between

displaying the ANI and the status message every 2

seconds.

TIMESTAMP – This is the time of day that the last ANI

was received. The timestamp is in 24-hour format. In

24-hour format, 4 A.M. is displayed as 04:00 and 4

P.M. is displayed as 16:00. Note that the timestamp

changes only when a new ANI comes in, it is not a

time-of-day clock.

USER NAME – This is the name of the user

associated with the numeric ID that was received. User

names are stored in a database. The database must

be configured before names can be displayed.

SCROLL LEFT INDICATOR – Indicates that there are

other ANI’s previously logged. Press the left

<SCROLL> button to view the previously logged items.

PAGE 6 MIDIAN ELECTRONICS INCORPORATED

DDU-100/200 Manual

POWER / EMERGENCY LED – Glows red when

power is turned on. Blinks between orange to indicate

that an emergency status message was received

recently. This indicator remains blinking until the

operator presses any key.

TRANSMIT / BUSY LED – This LED is off when there

is no activity. It glows red during transmit. It blinks

green any time the radio channel is busy.

4.1.2 Keypad Operation in Display Mode

<SCROLL> LEFT - When in Display Mode, the keypad

<SCROLL> keys are used to scroll through the

previously logged ANI’s. The scroll left indicator

remains present on the screen so long as there are

more previous entries to be viewed. The scroll left

indicator disappears when the oldest entry is reached.

<SCROLL> RIGHT - A scroll right indicator will appear

on the right side of the screen when there are newer

entries available for viewing. Press the right

<SCROLL> button to view the newer entries. When the

last entry is reached, the right scroll indicator

disappears.

<#> POUND KEY – Repeatedly pressing the <#> key

will always return the DDU to display mode with the

last ANI received being shown.

<MONITOR> - This button always controls the monitor

function of the radio. Press <MONITOR> to toggle the

state of the monitor output to the radio.

<SEND> - Activates the radio PTT switch, placing the

radio in transmit mode. This is especially useful if your

DDU is equipped with an optional gooseneck

microphone.

NUMBER KEYS – Pressing one of the number keys

<0> through <9> causes the DDU to jump directly into

call mode. See Calling a Unit for more information.

<*> STAR KEY – Pressing the <*> will place the DDU

in Menu Mode at the main menu.

4.2 MENU MODE

The Menu Mode provides the ability to place calls to

radio users and configure the DDU.

4.2.1 Navigating the Menus

Press the star key <*> while in Display Mode to place

the unit into Menu Mode. Upon entry to Menu Mode,

you will be in the Main Menu. The top line of the

display indicates this. The bottom line displays an item

available for selection, in this case the CALL

command.

The scroll right symbol on the right side of the display

indicates that additional items are available. Press the

right <SCROLL> button to view the next available item.

The scroll left symbol will then appear, indicating that

the left <SCROLL> button may be used to go back to

the previous item.

To select the displayed item, press the <SEND> button

(the <SEND> button acts like an ENTER key when in

menu mode). Upon selection, the name of the item will

appear on the top line of the display. The bottom line

will present additional items for selection. Press the

<#> key to return to the previous selection.

4.2.2 Calling a Unit in the Database

To place a call to a unit in the database, first select

CALL from the Main Menu. Press the right <SCROLL>

button to display the first user in the database. Either

the User ID will be displayed, or the User Name (alias)

will be displayed. This is determined by the Call Entry

Mode setting.

The left and right scroll indicators will appear on the

bottom line. This is the Select Mode. Use the

<SCROLL> keys to locate the desired user within the

database. When the name is located, press the

<SEND> key to place the call. The <#> key may be

used at any time prior to pressing <SEND> to cancel

the call.

To locate a user in the database more quickly, you can

enter one or more of the first few digits/letters of the

User ID/Name prior to pressing the right <SCROLL>

button. The DDU will search the database for users

matching the first few digits/letters.

4.2.3 Calling a Unit Not in the Database

To place a call to a unit which is not in the database,

start by selecting CALL from the Main Menu or by

pressing a number key while in display mode. Instead

of pressing the right <SCROLL> button, simply key the

numeric ID of the user to be called using the keypad.

Press <SEND> to initiate the call. The left <SCROLL>

key may be used as a backspace key to correct any

errors made during entry. The <#> key may be used at

any time prior to pressing <SEND> to cancel the call.

4.2.4 Numeric vs. Alphanumeric Entry

There are two different data entry modes available on

the DDU. As shipped from the factory, Numeric entry

is the default mode when calling a unit. As numbers

are entered, they appear on the bottom-left of the

MIDIAN ELECTRONICS INCORPORATED PAGE 7

DDU-100/200 Manual

display. Pressing the <*> key while in numeric entry

mode changes the mode to Alphanumeric.

In alphanumeric mode, you may type in letters and

numbers as described in the next section. This allows

you to type the name of a user in the database without

having to scroll through the names. Alphanumeric data

appears on the bottom line of the display as it is

entered. You may make alphanumeric call entry the

default mode by changing the Call Entry Mode setting

in the CONSOLE SETUP menu.

4.2.5 Entering Alphanumeric Data

Entering alphabetic characters using the numeric

keypad is easy. All of the letters of the alphabet appear

above the numbers on the keypad. For example, the

letters ‘A’ ‘B’ and ‘C’ appear on the <2> key.

Alphabetic characters are entered by pressing 2 digits.

The first digit is the key with the desired letter

appearing on it. The 2nd digit is the position of the letter

on that key. For example, the code for the letter ‘C’ is

23 since it is the 3rd letter on the <2> key. The letter ‘T’

is the 1st letter on the <8> key, so its code is 81.

To enter numeric characters in an alphanumeric field,

press the <0> key followed by the desired digit.

Punctuation characters such as comma <,> and <-> do

not appear on the keypad. Special codes have been

assigned to allow entry of those characters. Please

refer to the following chart

Note: Alphanumeric mode cannot be used to enter

user ID's (ANI's). In alphanumeric mode, numbers are

treated the same as letters.

A=21 I=43 Q=72 Y=93 7=07 - =15

B=22 J=51 R=73 Z=94 8=08 = =16

C=23 K=52 S=74 1=01 9=09 * =17

D=31 L=53 T=81 2=02 0=00 / =18

E=32 M=61 U=82 3=03 , =11 # =19

F=33 N=62 V=83 4=04 . =12 Spc=10

G=41 O=63 W=91 5=05 _=13

H=42 P=71 X=92 6=06 +=14

The code 10 is used to insert a space between

characters.

4.2.6 Entering Special DTMF Digits

The DDU supports the following special DTMF 'digits'

in numeric entry mode: *, #, A, B, and C (D is not

supported). These are entered using 2-key sequences

as follows:

* = * * # = * # A = * 1 B = * 2 C = * 3

These special digits can only be entered when adding

a User ID to the database. They cannot be dialed

directly from the CALL menu. Also, these special

sequences should not be used unless you are using

DTMF as the encode or decode format.

4.2.7 Locking and Unlocking the Menus

The menu system incorporates a lock feature to

prevent unauthorized personnel from changing the

DDU configuration. The lock feature also serves to

simplify day-to-day operation of the unit.

When the LOCK command is selected, all of the

menus are disabled. The only items available will be

CALL and UNLOCK.Selecting UNLOCK makes all of

the menu items available again.

When locked, the unit is password protected so only

authorized personnel may unlock the menus. As

shipped from the factory, the security feature is

disabled and the LOCK/UNLOCK options do not

appear. To enable the feature and select a password,

see the SECURITY SETUP menu item.

Remember your password! Once security is enabled

and the menus are locked, the only way to unlock will

be to use the password. If you do forget the password,

contact Midian for the reset procedure.

4.2.8 Repeater Access Control

The DDU can be interfaced to a repeater to limit

access only to those users who are authorized. This is

accomplished by requiring an ANI of the proper format

before granting access. Access can be further

restricted by requiring that the ANI match a User ID

stored in the database. See REPEATER SETUP for

more information.

4.3 USER DATABASE

The user database makes day-to-day operation of the

DDU much easier. You can use easy-to-remember

names instead of just numbers.

4.3.1 User Database Features

The primary purpose of the user database is to

associate names with numbers. This way, when an

ANI comes in, the name of the person can be

displayed along with the ANI. Having a user database

simplifies the calling of units allowing you to scroll

through a list of names.

Another feature of the database is the ability to assign

Kill and Spy ID’s to a user. These features are

designed to work with Midian’s encoder/decoder

products such as the UED-1 series. They allow the

operator of the DDU to disable a radio in the field or

listen in on it.

The DDU can store up to 137 names and ID numbers

in its database. The DDU retains the database memory

even when switched off.

4.3.2 Setting Up the User Database

Begin by compiling a list of names and ID numbers.

PAGE 8 MIDIAN ELECTRONICS INCORPORATED

DDU-100/200 Manual

Give some thought on how you are going to abbreviate

the names since only 14 characters per name are

available. To begin entering data, select Add User

from the USERS menu. See the description of these

items in the USERS menu section for more

information.

4.4 STATUS DISPLAY FEATURE

4.4.1 How Status Display Works

The status display feature treats the last digit of an ANI

as a status digit. This digit can be translated to a

status message that can be displayed on the DDU. Up

to 10 status messages can be configured,

corresponding to the digits 0-9.

Say for example that the ANI of a particular unit is

1234X where X is the status digit. If you are running a

taxi fleet, you may wish to specify status information as

follows:

CODE STATUS MSG MEANING

12340 <blank> Normal ANI, no status

12341 OFF DUTY Off duty, not available

12342 ON DUTY On duty

12343 FLAG UP Beginning fare

12344 FLAG DN End of fare

12345 EN ROUTE En-route to pickup fare

12346 NO FARE Nobody at pickup location

12347 REPEAT Repeat last call

12348 BREAKDOWN Car broke down

12349 EMERGENCY Emergency, need help

You can configure the status messages as you see fit

using the STATUS SETUP features. If the Emerg

Status feature is turned on, the status digit 9 is used

for emergency ANI. This will cause the emergency

LED to blink and an alarm siren to sound (if enabled).

Status messages are not displayed by default, this

must be enabled via the STATUS SETUP menu. When

the Status Feature is enabled the last digit of the ANI

is automatically blanked out. Instead, the ANI and the

status message are placed on the 1st line of the

display, alternating every 2 seconds.

5 MENU SYSTEM

The following sections describe the various functions of

the menu system. Factory default settings are

underlined.

5.1 CALL COMMAND

Allows you to place a call to units equipped with ANI

selective call decoders. You will be given the option to

enter the numeric ID of the unit you wish to call. If the

user database is set up, you may use the right

<SCROLL> buttons to go into Select Mode and find

the name of the user to be called using the left and

right <SCROLL> keys.

Alternatively, you can enter the User ID or User name

in part or in whole. When entering the complete name

or ID, simply press <SEND> to place the call. When

entering a partial name or ID, press the right

<SCROLL> button and find the user you wish to call.

Remember, you can use the <*> to toggle between

numeric and alphabetic entry modes.

5.2 LOCK OR UNLOCK COMMAND

Note The LOCK and UNLOCK menu options do not

appear unless enabled in SECUIRTY SETUP.

Selecting LOCK will disable access to the parts of the

menu system described in the following sections.

Select UNLOCK to enable the entire menu system.

You must enter a 4-digit password to unlock the menu

system. See SECURITY SETUP for more information.

5.3 ACTIONS MENU

5.3.1 Spy command

Allows you to remotely key up and listen to a unit. This

feature is designed to work with Midian’s UED-1 series

encoder/decoders. The code for spying on a unit must

be in the user database to use this function.

5.3.2 Kill command

Allows you to remotely disable a unit. This feature is

designed to work with Midian’s UED-1 series

encoder/decoders. The code for killing a unit must be

in the user database to use this function.

5.3.3 Clear ANI Log command

Allows you to clear the ANI log without having to turn

the unit off and back on.

5.4 USERS MENU

5.4.1 Add User menu

Allows you to add a new user to the database. When

ADD USER is selected, you will be prompted to fill in

the information for that user such as User ID and User

Name. See EDIT USER for more information.

5.4.2 Delete User menu

Allows you to delete a user record from the database.

When DELETE USER is selected, you will be able to

select the user you wish to delete in the same manner

as if placing a CALL. Use the scroll buttons to find the

user you wish to delete. Press <SEND> to delete the

selected user. You will have to press <SEND> a

second time to confirm. Press <#> to cancel if you

change your mind.

MIDIAN ELECTRONICS INCORPORATED PAGE 9

DDU-100/200 Manual

5.4.3 EDIT USER menu

Allows you to change information about a user. Select

the user you wish to edit in the same manner is if

placing a CALL to that user. Use the scroll buttons to

find the user you wish to edit. Press <SEND> to edit

the information for the selected user.

You will be prompted to fill out each field in turn. After

entering the data for a field, press <SEND> to go on to

the next field. To leave a field unchanged, simply press

<SEND> without entering data.

5.4.3.1 User ID field

This numeric field contains the primary ANI number

assigned to the user’s radio. This will be the number

used when calling a unit. ID’s may be 1 to 8 digits

depending on the ANI format used.

Range: 0-8 digits

Default: blank

5.4.3.2 User Name field

This alphanumeric field contains the name of the user

associated with the user ID. A maximum of 14

characters may be used. See the Entering

Alphanumeric Data section for more information.

Range: 0-14 characters

Default: blank

5.4.3.3 Spy ID setting

Specify the code required to spy on this unit. Leave

blank if not using this feature.

Range: 0-8 digits

Default: blank

5.4.3.4 Kill ID setting

Specify the code required to disable this unit. Leave

blank if not using this feature.

Range: 0-8 digits

Default: blank

5.5 SETUP MENU

5.5.1 SOUNDS SETUP menu

5.5.1.1 Keypad Beep option

Turning this option on causes a beep to be heard for

each key press.

OFF Keypad beeps off.

ON Keypad beeps on.

5.5.1.2 Beep On ANI option

Turning this option on will cause an alert beep to be

heard every time a new ANI is received.

OFF Do not beep when ANI comes in.

ON Beep when ANI comes in.

5.5.1.3 Emerg Siren option

This causes a siren sound to be heard when an

emergency ANI is received. This requires turning on

the Emerg Status option in the STATUS SETUP

menu.

OFF Do not sound siren on emergency ANI.

ON Sound siren on emergency ANI.

5.5.1.4 Internal Speaker setting

Normally, the internal speaker is on. This is required in

order for key beeps, error beeps, confirmation beeps,

and other system sounds to be heard. This also allows

audio received from the radio to be heard at the

console. If it is desired that absolutely no sound be

heard from the console speaker, this setting allows it to

be switched off.

OFF Internal speaker disabled.

ON Internal speaker enabled.

5.5.1.5 Auto Mute Speaker feature

This feature is designed to mute the internal speaker

while an ANI is being received. It works in conjunction

with the Auto Mute Time in the RADIO SETUP menu.

When this feature is enabled, the internal speaker

remains muted so long as there is no COR indication

coming from the radio. When the COR indication goes

active, the internal speaker will automatically unmute

after the Auto Mute Time expires. Note: System

sounds can still be heard during the mute period.

OFF Do not mute the internal speaker.

ON Mute/unmute speaker automatically.

5.5.2 TIME SETUP menu

In order for the correct time to be displayed, the time

clock must be set. The unit must remain switched-on

at all times in order to keep track of the time. The clock

must be set each time the unit is powered up.

5.5.2.1 Hour setting

Set the hour of the day in 24-hour format. Enter two

digits.

Range: 00-23

Default: 00

5.5.2.2 Minute setting

Set the minutes past the hour. Enter two digits.

Range: 00-59

Default: 00

5.5.3 CONSOLE SETUP menu

5.5.3.1 Call Entry Mode setting

Determines if numeric entry or alphanumeric data entry

is the default mode when placing a call. The mode of

entry can be toggled by pressing the <*> key during

PAGE 10 MIDIAN ELECTRONICS INCORPORATED

DDU-100/200 Manual

data entry (except when entering ANI's).

NUMERIC Start in numeric only mode.

ALPHA Start entry in alphanumeric mode.

5.5.3.2 Fast Scrolling setting

Fast Scrolling allows for faster navigation through the

menu system. The DDU can also animate the scrolling

of the screen from side-to-side. This provides positive

feedback in response to scrolling through menus and

the ANI log. If this effect is desired, Fast Scrolling can

be disabled.

OFF Animate scrolling from side to side.

ON Scroll at fast speed.

5.5.3.3 Contrast setting

Allows the display contrast to be adjusted for best

viewing.

LOW Low contrast setting.

HIGH High contrast setting.

5.5.3.4 Mic. Option setting

Selects which type of optional microphone accessory is

attached to the DDU. This is necessary so that the

DDU knows how to treat the external (for exmpale off-

hook or monitor).

NONE No microphone.

GOOSENECK Gooseneck style microphone.

PADDLE Paddle style desktop microphone.

HANDSET External handset.

5.5.3.5 Printer Option

The DDU, if ordered with the printer cable option, can

log the ANI traffic to a serial printer. The printer must

have a print buffer and a standard RS-232 port. It must

be configured for 9600 baud, 8 data bits, 1 stop bit and

no parity. In order to send data to the printer, this

option must be on.

OFF Do not send data to printer.

ON Send data to printer.

5.5.4 SECURITY SETUP menu

5.5.4.1 Security setting

Allows the security option to be turned on and off. If

turned off, the LOCK/UNLOCK menus will not appear.

ON Enable security feature.

OFF Disable security feature.

5.5.4.2 Password setting

Sets the password required to UNLOCK the menu

system when the Security is turned on. Must be 4

numeric digits.

Range: 4 digits

Default: 0000

5.5.5 RADIO SETUP menu

5.5.5.1 Keyup Delay setting

This sets the Key-Up Delay, also known as Front

Porch Time. This is the amount of time the DDU will

wait after asserting PTT before sending tones over the

air. This time allows for delays introduced by repeaters

and decoding of squelch control signals such as

CTCSS.

Range: 0005 to 4000 milliseconds

Default: 0400 milliseconds

5.5.5.2 COR Polarity setting

Determines which state of the COR (carrier detect)

input is considered the active state. When COR is

active, the radio channel is busy. Important Note: The

DDU will not decode 5-tone formats unless the COR

input is active. If not connecting the COR Input to the

DDU, this setting should be HIGH. If the radio is using

PL/CTCSS, it is recommended that the COR Input be

connected to a point which goes active when PL is

detected.

The COR input is used in conjunction with the Busy

Lockout feature. If not connecting the COR input, do

not enable Busy Lockout .

LOW Channel is busy when COR is 0V.

HIGH Channel is busy when COR is 5V.

5.5.5.3 Busy Lockout option

This option prevents the DDU from transmitting on a

busy channel. If this option is ON, the unit will not

transmit when the COR input is in the active state.

When making a call and the channel is busy, the DDU

will wait until the channel is clear and then transmit.

New calls cannot be placed until the pending call is

completed or canceled. When this option is OFF, the

unit will transmit regardless of the state of the COR

input.

OFF Transmit regardless of COR input.

ON Do not transmit when channel busy.

5.5.5.4 Squelch Polarity setting

Determines the active state of the Squelch Output. The

Squelch Output is used in conjunction with the COR

Input and the Auto Mute Time to mute incoming ANI

packets.

LOW Radio is squelched when the Squelch

Output. Is brought to GND.

HIGH Radio is squelched when the Squelch

Output is not at GND (floating).

5.5.5.5 Auto Mute Time setting

Specifies the amount of time after the COR Input

MIDIAN ELECTRONICS INCORPORATED PAGE 11

DDU-100/200 Manual

becomes active for the Squelch Output to go inactive.

This allows the Squelch Output to be used to mute

incoming ANI's if connected to a point which disables

the radio speaker. This value should be set to allow for

any key-up delay of the transmitting unit as well as the

time it takes for the ANI to complete.

Range: 0000 to 4000 milliseconds

Default: 0300 milliseconds

5.5.5.6 Trunk Delay Polarity setting

When using with trunked radios, this setting

determines the active state of the Trunking Delay Input

(a.k.a. LTR in). This input is used to hold-off

transmitting a call until a channel is acquired on the

trunking system. If a channel is not acquired within 4.5

seconds, a timeout will occur and the call will be

canceled. Important note: The Trunking Delay Input

shares the same wire as the Squelch Output. Normally

the wire acts as the Squelch Output. The DDU must be

jumpered correctly to configure this wire for trunking.

Please see the installation instructions.

When not using the Trunking Delay Input, this setting

should be HIGH.

LOW Trunking signal goes to 0V when a

channel is acquired.

HIGH Trunking signal goes to 5V when a

channel is acquired.

5.5.6 ENC/DEC SETUP menu

5.5.6.1 Encode Format setting

The tone-signaling format used to encode outgoing

calls. Select from one of the following formats:

DTMF

CCIR

EEA

EIA

ZVEI

DZVEI

DDZVEI

NATEL

MODAT

5.5.6.2 Encode Time 1 setting

When using 5-tone formats (non-DTMF): The

amount of time for the first tone (or digit) of the encode

sequence (may also be a preamble). This is also

known as tone width. Each ANI format has standard

tone widths. Non-standard tone widths are permitted,

allowing for faster encode.

When using DTMF format: This is the tone ON time

for DTMF format.

Range: 0005 to 1000 milliseconds

Default: 0050 milliseconds

5.5.6.3 Encode Time 2 setting

When using 5-tone formats (non-DTMF): This is the

duration of each of the remaining tones (or digits) of

the encode sequence. Normally, this should be the

same as Encode Time 1.

When using DTMF format: This is the tone OFF time

(between digits) when using DTMF format.

Range: 0005 to 1000 milliseconds

Default: 0050 milliseconds

5.5.6.4 Decode Format setting

The tone-signaling format of the incoming ANI's. The

Encode and Decode formats may be different if

desired. Select from one of the following formats:

DTMF

CCIR

EEA

EIA

ZVEI

DZVEI

DDZVEI

NATEL

MODAT

5.5.6.5 Decode Time setting

When using 5-tone formats (non-DTMF): The

minimum amount of time a single tone must be present

before it is decoded. This time can be as little as 5

milliseconds. This time should be set between 1/2 and

1/5th of the encode timing. For example, if the encode

timing is 50 milliseconds per digit, then the Decode

Time should be set between 5 and 25 milliseconds.

The lower the number, the more sensitive the unit will

be. When the number is higher, the unit will be less

susceptible to falsing on noise.

When using DTMF format: The amount of time after

the last digit is received for decode to take place. This

value should be at least twice that of the digit OFF

time.

Range: 0005 to 9999 milliseconds

Default: 1000 milliseconds

5.5.6.6 Ignore Nonuser option

Turning on this option helps prevent the display of false

decodes by ignoring ID’s which do not appear in the

user database. This can also be used to restrict access

to a repeater to only those ID’s in the database. See

REPEATER SETUP for more information.

OFF Display ID’s not in database.

PAGE 12 MIDIAN ELECTRONICS INCORPORATED

DDU-100/200 Manual

ON Ignore ID’s not in database.

5.5.7 REPEATER SETUP menu

5.5.7.1 Repeat Control option

Allows the DDU to control access to a repeater.

Causes the DDU to assert a PTT output to a repeater

upon receipt of either: (1) any ANI in the format

decoded by the DDU or (2) a valid User ID in the user

database. To restrict repeater access to valid User ID’s

only, the Ignore Nonuser option in the ENC/DEC

SETUP must be turned ON. Otherwise, any incoming

ANI of the proper format will be considered valid.

Other possible uses of the Repeat Control option

include operation of a horn relay or the enabling of a

PA speaker. Repeater control output can either be the

PTT output, or the MONITOR output (see below).

OFF Repeater control disabled.

ON Repeater control is enabled.

5.5.7.2 Validate Time setting

This sets how long after COR becomes active, that the

repeater will be keyed prior to receiving a valid decode.

This allows time for the incoming ANI to be broadcast

by the repeater before it has been validated. If no ANI

(or valid User ID) has been decoded during this time,

the repeater will be un-keyed. The repeater will remain

un-keyed until COR goes inactive.

If set to 0, the repeater will not be keyed until after the

ANI (or valid User ID) has been decoded.

Range: 00 to 99 10ths of a second (0.0 - 9.9 s)

Default: 10 10ths of a second (1.0 second)

5.5.7.3 PTT Hang Time setting

Once validation has occurred, this sets how long the

repeater will remain keyed after COR goes inactive.

Once the hang timer expires, a new validation will be

required to access the repeater.

Range: 00 to 99 10ths of a second (0.0 - 9.9 s)

Default: 20 10ths of a second (2.0 seconds)

5.5.7.4 Hang Reset setting

This setting specifies what is required to reset the PTT

hang timer before it expires. This can either be COR

or COR+ANI. When set to COR, the hang timer will be

reset if COR goes active prior to expiration, allowing

the conversation to continue without a new validation.

When set to COR+ANI, a new valid ANI will also be

required to keep the repeater open.

COR Reset hang timer if COR goes active

before the hang time expires.

COR+ANI Require both COR and an ANI (or

valid User ID) to reset the hang timer

before expiration.

5.5.7.5 Repeater Out setting

This setting specifies which output is used to put the

repeater into transmit mode when Repeat Control is

enabled.

PTT PTT output used to key repeater in

Repeat Control mode.

MONITOR MONITOR output used to key repeater

in Repeat Control mode.

5.5.8 STATUS SETUP menu

5.5.8.1 Status Feature option

When enabled, the Status Feature always treats the

last digit of an incoming ANI as a status digit. The last

digit of the ANI is not actually displayed. Instead the

user's ANI and Status Message are displayed

alternately (every 2 seconds).

When the Status Feature is enabled, it will be required

that all units send an extra digit after their ANI. See the

section on Status Display Feature for more

information.

OFF Disable status feature.

ON Enable status feature.

5.5.8.2 Emergency Status option

When enabled, the Emergency Status option treats

any ANI with 9as the last digit as an Emergency ANI.

When an Emergency ANI comes in, the PWR-ALM

LED flashes rapidly between green and orange.

Optionally, the Emerg Siren sound can be enabled to

alert the system operator of the emergency situation.

The Emergency Status option may be used alone, or in

conjunction with the Status Feature option. When

used alone, the digit '9' will appear and the status

message is not displayed. Also, the User Name in the

database will not be properly displayed.

When used in conjunction with the Status Feature, the

'9' will not be displayed. Instead, Status 9 Msg will be

displayed (unless it is blank), alternating with the ANI.

The User Name in the database will be properly

displayed.

OFF Display ID’s not in database.

ON Ignore ID’s not in database.

5.5.8.3 Status 0 Msg setting

Allows you to specify the status message displayed

when using the Status Feature. When using this

feature, the last digit of the ANI will be used to

determine the status. There is a status message for

each of the digits 0 through 9. Each status message

may be up to 10 alphanumeric characters.

Range: 0-10 characters

Default: blank