Midian TRC-100, TRC-700, TRC-200 User Manual

TRC-100

Tone Remote Controller with DTMF Dialing and Decoding

TRC-200

Tone Remote Controller with 5-Tone Dialing and Decoding

TRC-700

Tone Remote Controller with Pulse Tone Dialing and Decoding

Manual Revision: 2010-02-18

Covers TRC Firmware Revisions:

1.22 & Higher

Covers Keyboard Firmware Revisions:

3.2 & Higher

Covers Encoder/Decoder Firmware Revisions:

1.7 & Higher

Covers PCB Revisions:

G & Higher

1

TABLE OF CONTENTS

Specifications 3
General Information 4
Hardware Installation 5
Hardware Alignment 7
Jumper Settings 9
Controls & Indicators 10
Operation 12
Product Programming 15
Tone Signaling Formats 27
System Error Messages 29
Theory of Operation 31
Technical Notes 33
Contact Information 33

2

SPECIFICATIONS

Voltage/Current:

Operating Voltage: 18 VDC
Operating Current (standby): 210 mA
Operating Current (RX): 380 mA
Operating Current (TX): 220 mA

RX Inputs:

Input Impedance (RX): 600 Ohms
Compression Threshold: Adjustable to –20 dbm
Compression Range: Not more than 3 db change for 30 db increase above threshold
Speaker Audio Output: 2.0 Watt
Distortion: Less than 3% at full audio
Hum & Noise: 50 db below normal operating level
Frequency Response: Less than 3 db from 300 Hz-3 KHz
Notch Filter Depth: 45 db relative to 1 KHz below compression

TX Outputs:

TX Output: Adjustable to +15 dbm on 2175 Hz
Output Impedance (TX): 600 Ohms
Mic Compression Threshold: Adjustable typically 50 mv
Compression Range: Not more than 3 db change for 30 db increase above threshold
Hum & Noise: 50 db below normal operating level
Notch Filter Depth: 45 db relative to 1 KHz below compression

Mechanical:

Dimensions: 2.875" H x 6.5” W x 8.75" L
Operating Temp (excluding LCD): -30° to +60° C

Default Control Tone Frequencies & Timing:

Function Tone Frequency Level & Duration Function

Tone

High-Level Guard 2175 Hz 10 dBm for 120 msec F8 1250 Hz 0 dBm for 40 msec
Low-Level Guard 2175 Hz -20 dBm continuous F9 1150 Hz 0 dBm for 40 msec
Monitor 2050 Hz 0 dBm for 40 msec F10 1050 Hz 0 dBm for 40 msec
F1 1950 Hz 0 dBm for 40 msec F11 950 Hz 0 dBm for 40 msec
F2 1850 Hz 0 dBm for 40 msec F12 850 Hz 0 dBm for 40 msec
F3 1750 Hz 0 dBm for 40 msec F13 750 Hz 0 dBm for 40 msec
F4 1650 Hz 0 dBm for 40 msec F14 650 Hz 0 dBm for 40 msec
F5 1550 Hz 0 dBm for 40 msec F15 550 Hz 0 dBm for 40 msec
F6 1450 Hz 0 dBm for 40 msec F16 2350 Hz 0 dBm for 40 msec
F7 1350 Hz 0 dBm for 40 msec F17 2450 Hz 0 dBm for 40 msec

Default Level & Duration

Encode Formats:

DTMF (0-9, *, #, A, B, C)
5-Tone (CCIR, DZVEI, DDZVEI, EEA, EIA, Eurosignal, MODAT, NATEL, ZVEI)
2-Tone
Pulse Tone (1500 Hz & 2805 Hz)

Decode Formats:

DTMF (TRC-100)
5-Tone (CCIR, DZVEI, DDZVEI, EEA, EIA, Eurosignal, MODAT, NATEL, ZVEI) (TRC-200)
Pulse Tone (1500 Hz & 2805 Hz) (TRC-700)

3

GENERAL INFORMATION

Midian’s TRC-100 is a tone remote controller with DTMF dialing and DTMF ANI and ENI display decoding. The
TRC-200 is a tone remote controller with 5-Tone dialing and 5-Tone ANI and ENI display decoding. The TRC­700 is a tone remote controller with Pulse Tone dialing and decode for hospital HEAR systems. The TRC uses
EIA and Industry standards for monitor, guard, and F1-F16 function tones. Midian also adds F17 for additional
function control when used with Midian’s TTC-1. The built-in display shows the frequency/function selection, real­time clock and the decoded ANI/ENI with Alias.

The TRC comes standard with an internal microphone and speaker. A gooseneck microphone (TRC Option A) or
handset and cradle (TRC Option C) are also available. The standard configuration is for a 2-wire and single line
system. A 4-wire option (TRC Option F) or a Line 2 option (TRC Option E) is available for these types of systems.

Midian’s TRC can be used with Midian’s TTC-1, tone remote adaptor, or another manufacturer’s tone remote
adaptor that uses EIA and industry standard F1-F16 function tones.

4

HARDWARE INSTALLATION

Be certain to follow standard anti-static procedures when handling any of Midian’s products.

Getting Started:

The TRC has a number of adjustment potentiometers and configuration jumpers. These have been adjusted and
configured at the factory for a typical installation. However, audio levels should be verified and adjusted (if
necessary) at the time of installation. Also, the configuration jumpers should be inspected prior to installation to
verify that they are in the right configuration. Jumper descriptions appear in the jumper settings section with a
quick reference table.

Line Interface

The line interface connector PL1 is a 10-pin RJ-45 style connector in the center of the back panel. A standard 4­pin RJ-11 cable will plug into the RJ-45 and connect to the center 4-pins that are needed for 2-wire or 4-wire
interfaces. The remaining 6 pins are for use with a telemetry radio or microwave E&M options and for future
interoperability options.

1

Diagram 3.1

2-Wire & Line 1 Operation: For a single line, 2-wire installation, simply connect pins 5 and 6 (red and green) to

the dedicated line. This is the standard configuration for the TRC. See table 3.1.

Table 3.1

Pin Color 2-Wire

PL1-4 Black Not Used
PL1-5 Red Line 1
PL1-6 Green Line 1
PL1-7 Yellow Not Used

2-Wire with Line 1 & 2 Operation: For a 2-line, 2-wire installation connect pins 5 and 6 (red and green) for line 1
and pins 4 and 7 (black and yellow) for line 2. For this feature TRC Option E must be installed in the TRC.
Remove JP202 and JP203 for proper operation. See table 3.2. Please note that the 4-Wire Option (TRC Option
F) is not available in Line 2 operation.

Table 3.2

Pin Color 2-Wire

PL1-4 Black Line 2
PL1-5 Red Line 1
PL1-6 Green Line 1
PL1-7 Yellow Line 2

5

4-Wire & Line 1 Operation: For a single line 4-wire installation, connect pins 4 and 7 (black and yellow) for
receive audio and pins 5 and 6 (red and green) for transmit audio. For this feature TRC Option F must be installed
in the TRC. JP204 should be moved to the 3-4 position. See table 3.3. Please note that the Line 2/Supervisor
Option (TRC Option E) is not available in 4-wire operation.

Table 3.3

Pin Color 4-Wire

PL1-4 Black RX
PL1-5 Red TX
PL1-6 Green TX
PL1-7 Yellow RX

Parallel Remote Operation: When multiple remotes are connected to a single dedicate phone line JP304 must
be installed in the unit furthest from the phone line connection. All remaining units must have JP304 removed.

Diagram 3.2 – Parallel Remote Wiring

To Tone

Remote
Adaptor

6 5

5

6 5

6

TRC

JP304

Out

TRC

JP304

Out

TRC

JP304

In

Supervisor Operation: When using the supervisor option (TRC Option E), the supervisor TRC is connected to
the line via pins 2 and 3. The remaining TRC’s pins 5 and 6 are connected in parallel to the supervisor’s TRC pins
4 and 7. To enable these remotes, the supervisor relay must be engaged by pressing the * and # keys
simultaneously.

Diagram 3.3 – Supervisor Wiring

To Tone

Remote
Adaptor

5

6

Supervisor

TRC

4

7

5

TRC

5

66

TRC

Telemetry Radio: Rather than connecting the TRC to a dedicated line to communicate with the tone remote

adaptor, telemetry radios can be used for communication. If connecting to a telemetry radio connect PL1 as
follows to the radio:

PL1-3: PTT Output: Connect to the PTT of the radio. Jumpers JP210 1-2 and JP208 1-2 should be installed.
PL1-6: TX Audio Output: Connect to the mic-hi input of the radio. Install JP205 2-3.
PL1-7: RX Audio Input: Connect to a point in the radio providing flat receive audio. Install JP11 1-2 & remove

JP204.

PL1-9: Battery: 15 volts through a 100 Ohm current limiting resistor (R216).
PL1-10: Ground: Connect to the ground of the radio.

Microwave: Connect the 4-wire audio to the TX and RX sides of the microwave. If the M lead is desired install

JP208 1-2 and JP10 1-2. Connect the microwave’s M lead to PL1 Pin 3 for an open collector to ground. If using
an external relay to control the microwave’s M lead you may use Q205 to provide 12 volts and install JP207 1-2
and JP208 2-3.

PL1-8: External Speaker or PA System

6

HARDWARE ALIGNMENT

The following procedures assume a good quality dedicated line is being used and the tone remote adaptor is already
installed. The alignments are preset at the factory and should not need to be adjusted during installation. However, if an
adjustment is needed please follow the procedures below.

RX Input Line Level Adjustment:

1. With the dedicated line connected to the TRC, connect a line level meter to the red and green (or yellow & black
with the 4-wire option) in bridging mode. If testing on a bench with no tone remote adaptor available use termination
mode on the line level meter.

2. With the line level meter generating Low-Level Guard Tone at -20 dBm, monitor TP304 with an oscilloscope.

3. Adjust RP306, so that 200 mV p-p is seen at TP304 or 165 mV p-p is seen at TP301. If paralleling multiple remotes,
this alignment should be done with all remotes attached.

TX Output Line Level Adjustment:

1. With the dedicated line connected to the TRC, connect a line level meter to the red and green in bridging mode. If
testing on a bench with no tone remote adaptor available use termination mode on the line level meter.

2. Set RP201 to 90%.

3. Push and hold the SEND key on the TRC to generate the Low-Level Guard Tone.

4. Adjust RP202 so that the line level meter shows the Low-Level Guard Tone at -20 dBm. If paralleling multiple
remotes, this alignment should be done with all remotes attached.

RX Notch Filter Alignment:

1. Generate the 2175 Hz Low-Level Guard Tone to the TRC.

2. Turn RP303 fully clockwise.

3. Monitor TP303 with a Sinadder. The sensitivity of the Sinadder should be adjusted to hear the tone.

4. Adjust RP302 until the tone is at it’s most diminished point.

5. Adjust RP303 until the tone fully diminishes.

6. Repeat steps 4 and 5 until no tone remains.

TX Notch Filter Alignment:

1. Unplug the internal microphone from the TRC, install JP101 1-2 and turn RP102 fully clockwise.

2. Push and hold the SEND key on the TRC to generate the 2175 Hz Low-Level Guard Tone.

3. Monitor TP103 with a Sinadder. The sensitivity of the Sinadder should be adjusted to hear the tone.

4. Adjust RP103 until the tone is at it’s most diminished point.

5. Adjust RP102 until the tone fully diminishes.

6. Repeat steps 4 and 5 until no tone remains.

7. After aligning the TX notch filter, remove JP101 and plug back in the internal or gooseneck microphone.

7

Handset Ear Level (TRC Option C Only):

1. With a field radio talking on channel to the TRC, adjust RP304 to a comfortable level.

DTMF Decode Audio Level Alignment:

1. Transmit a 15 00 Hz test tone over the air at approximately 2/3 full system deviation (3.3 kHz wideband, 1.7 kHz
narrowband).

2. Monitor TP501 with an oscilloscope and adjust RP501 for maximum amplitude, so that TP501 doesn’t quite clip.

5-Tone & Pulse Tone Decode Audio Level Alignment:

1. Transmit a 15 00 Hz test tone over the air at approximately 2/3 full system deviation (3.3 kHz wideband, 1.7 kHz
narrowband).

2. Monitor TP501 with an oscilloscope and adjust RP501 for maximum amplitude, so that TP501 doesn’t quite clip.

3. Monitor TP503 to verify a symmetrical and clean square wave.

8

JUMPER SETTINGS

The following table shows the default jumper settings and their function:

Jumper

Number

JP101 Out Install during TX Notch Filter Alignment only
JP201 Out Sidetone for dialing (4-wire option only)
JP202 In Removed when TRC Option E is installed (Line 2/Supervisor)
JP203 In Removed when TRC Option E is installed (Line 2/Supervisor)
JP204 1-2 In – 3-4 Out 2-wire (1-2 In 3-4 Out) or 4-wire option (1-2 Out 3-4 In)
JP205 1-2 In – 2-3 Out Balanced (1-2 In 2-3 Out)/Unbalanced (1-2 Out 2-3 In) Audio

JP206 Out Power with current limit.
JP207 Out Activates Q205 to provide 14 V to external M lead relay.
JP208 Out If JP208 1-2 is installed with JP210 1-2, provides an open-collector

JP209 In Always installed unless directed otherwise by Midian.
JP210 1-2 Out – 2-3 Out Install JP210 1-2 with JP208 1-2 to PTT a telemetry radio.
JP301 1-2 In – 2-3 Out Future Use
JP302 Out Handset Audio Feedback. Install only with the TRC Option C if dial

JP303 Out TX Audio Loading. If less TX audio is needed, install this jumper.
JP304 In 2-Wire RX Audio Termination. If more RX audio is needed, remove

JP305 Out 4-wire option only. RX Audio Loading. If less RX audio is needed,
JP306 Out 4-wire option only. RX Audio Termination. If more RX audio is

JP307 1-2 Out – 2-3 In With 2-3 installed the volume control switch is the main source of

JP308 Out Low impedance audio for external speaker or PA System.
JP309 In Leave In: In for hard mute and out for soft mute
JP401 Out Factory Use Only
JP409 Out Factory Use Only

Default Position Description

Selection for use with a telemetry radio instead of a dedicated line.

to ground on PL1-3 to PTT a telemetry radio or ground a relay for
an M lead.

tones and voice in the ear piece are desired.

this jumper. This should only be needed if paralleling remotes.
install this jumper.
needed, remove this jumper. This should only be needed if

paralleling remotes.
controlling the handset ear piece audio level. With 1-2 installed and

2-3 removed, the volume control switch does not affect the handset
ear piece audio level and RP304 is the only source of control.

9

CONTROLS & INDICATORS

12:00 ID: 1234
Freq: 01 Fire 1

PWR - LINE/SUP SEND - F1/F2

ABC 2 DEF

1

3

FREQ INTER

GHI

4

PQRS 7 TUV 8 WXYZ

MENU * OPER 0 CLR

JKL 5 MNO

6

9

#

◄ SCROLL ►

MONITOR

SEND

Power/Volume Switch: On the right side of the TRC, there is a switch which acts as the power and volume

switch. The switch is in the power off position when turned fully clockwise past the click. Turning the switch
counter-clockwise past the click turns the power on to the volume control. At this point the volume is in the low
position. Turning the switch further counter-clockwise increases the volume.

LCD: The 2-line LCD displays the time and unit ID on the first line and the frequency selection and frequency
alias on the second. When a dialing sequence is performed the second line is cleared and the dialing sequence is
displayed. Channel changes are also shows between parallel remotes.

LED 1 (PWR - LINE/SUP): This LED is a bi-color LED. The LED will glow red when the power is on to the TRC. It
glows orange when Line 2/Supervisor mode is active.

LED 2 (SEND - F1/F2): This LED is a tri-color LED. The LED will glow red during transmit of Freq 1 and orange
during transmit of Freq 2. It glows green when Guard Tone is detected from a parallel tone remote.

FREQ: The FREQ button acts as the frequency select and the function select key. Pressing this key followed by
0-17 will select the associated frequency or function. When using the TRC with Midian’s TTC-1 tone remote
adaptor both frequency and function tones are available. When using the TRC with another manufacturer’s tone
remote adaptor the frequency tones are selectable.

INTER: Pressing the INTER key will allow intercom communications between several connected tone remotes
without transmitting over the radio. When the INTER key is pressed and held, the audio is routed on the line
without the Guard Tone activating the transmitter. Other tone remotes on the same line will hear the audio
automatically. No cross mute is available in intercom mode since there is no Guard Tone present.

MONITOR: Pressing the MONITOR key will allow the user to monitor the channel before pressing the SEND key
to make a call. If a conversation is heard then another co-channel user presently “owns” the channel and should
not be interrupted.

10

SEND: Pressing SEND will transmit the high-level guard tone for 120 msec, followed by the frequency tone for 40
msec, followed by the low-level guard tone that keys the radio with the voice and dialing riding over the low-level
continuous tone.

0-9 Keys: Used in conjunction with the FREQ key these number keys can be used to select the
frequency/function tone. These keys are also used to dial DTMF, 5-Tone or Pulse Tone.

*/MENU: The MENU key takes the user into call mode and setup mode.
#/CLR: When CLR is pressed, any keyboard entries in the buffer will be cleared.

11

OPERATION

The TRC has 4 operating modes:
Control Mode: This is the normal operating mode. It allows for remote control of a base station equipped with a

tone remote adaptor such as Midian’s TTC-1.

ANI Review Mode: This mode is for viewing the last 10 ANI’s stored in the ANI log.
Call Mode: This mode is for encoding DTMF, 5-Tone, 2-Tone or Pulse Tone.
Menu Mode: This mode is for configuring the TRC programmable features.
Control Mode:

In Control Mode the LCD display the time and ID of the last ANI received on the first line. On the second line the
selected frequency is displayed along with the programmed alias for that channel. If using with other Midian
TRC’s (revision G and higher), the paralleled remotes will also show the channel change on the display. Note:
Upon decoding of an ANI the LCD will toggle briefly between Control Mode and ANI Review Mode.

12:00 ID: 1234
Freq: 01 Fire 1

Frequency versus Function: The F1-F17 tones are referred to, industry wide, as Function Tones, but are used
as frequency selector tones to control the base station radio channel selection. Midian, with it’s TTC-1 tone
remote adaptor can use the Function Tones for either frequency selection or for controlling a function for remote
monitoring and control. These functions can be used for turning on/off a scrambler in the TTC-1, controlling voice
prompts from the TTC-1, or providing outputs from the TTC-1 to the TTC Option A (wild card module) for remotely
controlling equipment. If using the TRC with the LCD Option (TRC Option I) the TRC will display the Frequency
and the Function. For example, Frequency 1 can be selected while controlling Function 5 and the display will
show “Freq: 01 Func: 05”. A frequency and function should not share the same Function Tone. For example, if
only channel 1 and 2 at the base station need to be controlled (F1-F2), this leaves F3-F17 for use as function
control. If 16 channels need to be controlled at the base station (F1-F16), this leaves F17 for use as function
control.

Frequency Selection: To change the channel of the radio (F1 up to F16), press the FREQ button followed by a
single digit number for F1-F9 or a double digit number for F01-F16. When the Function Tone is selected, the TRC
sends the High-Level Guard Tone followed by the selected Function Tone to the tone remote adaptor to change
the channel of the radio. If using with other Midian TRC’s (revision G and higher), the paralleled remotes will also
show the channel change on the display.

Function Selection: To control a function press the FREQ button followed by a single digit number for F1-F9 or a
double digit number for F10-F16. When the Function Tone is selected, the TRC sends the High-Level Guard Tone
followed by the selected Function Tone to the TTC-1 to command the function control. Note: The selection of a
function does not cancel any frequency selection. If the TRC is on Frequency 1 and Function 5 is selected, the
tone remote adaptor will remain on Frequency 1.

Transmitting: After selecting the desired Function Tone for frequency selection, pressing and holding the SEND
key will generate the High-Level Guard Tone followed by the continuous Low-Level Guard Tone. The user speaks
into the microphone of the TRC and the voice goes out over the Low-Level Guard Tone.

12

Monitor: Prior to transmitting or dialing, the user should Monitor the channel to see if there is activity on the
channel. If there is activity, the user should wait until the channel is clear. Pressing the MONITOR button sends
the High-Level Guard Tone followed by the Monitor Function Tone to the tone remote adaptor giving it a
command to open the squelch of the radio. Depending on the tone remote adaptor this can be momentary or
latched. If momentary, the tone remote adaptor will close the squelch of the radio after a set amount of time. If
latched, the squelch will remain open until the tone remote adaptor receives a second Monitor command from the
TRC.

Receiving: When a field radio keys up, the tone remote adaptor passes the voice down the line to the TRC. The
voice will then be passed through to the internal speaker of the TRC.

Line 2/Supervisor Capability (* + #): If the TRC is ordered with TRC Option E, then the TRC is equipped with
the Line 2/Supervisor Capability. Line 2 is used for toggling between 2 different base station radios and
Supervisor is used to shut down any paralleled remotes. Pressing the * and # keys simultaneously activates the
Supervisor or the Line 2 mode depending on the options installed in the unit. Pressing the keys again deactivates
the Supervisor or the Line 2 mode. When activated LED 1 changes from red to orange.

Memory Dialing: The TRC supports up to 9 memory dials (1-9). Press and release the * ke y, followed by the
desired 1-9 number key for 1 second.

Last Number Redial: The TRC can recall the last sequence dialed by pressing and releasi ng the * key followed
by the SEND key.

ANI Review Mode:

Pressing FREQ and INTER at the same time while in Control Mode will change the mode to ANI Review Mode. In
this mode, the ANI is shown first on the first line followed by the timestamp. The second line shows the alias of
the decoded ANI, if programmed.

1234 12:00
< John Smith >

When ANI Review Mode is brought up the last incoming ANI is shown first. Pressing the FREQ scrolls the log to
the next most recent ANI in the log. Pressing INTER scrolls the log to the newer entries in the ANI log. When
there are additional older ANI’s to be displayed then the < icon is shown to the left. When there are additional
newer ANI’s to be displayed then the > icon is shown to the right.

If the status feature is enabled and a status is received with the ANI, then the ANI will alternate every 2 seconds
between the ANI and the status message.

To return to the Control Mode press FREQ and INTER simultaneously or press the CLR # key.

Call Mode:

To enter call mode press the MENU key and CALL will be displayed on the LCD. Press the SEND key to select
the CALL function.

Direct Dialing: Once in the call mode as above, simply press the numeric keys of the desired dialing sequence
and press SEND.

Database Dialing: Once in the call mode as above, simply press the INTER key to scroll right through the
database until the desired ID is found. Once found, press the SEND key. If while scrolling the desired ID is
passed by, press the FREQ key to scroll left.

13

Speed Dialing: Speed dialing can be done in the Control Mode or ANI Review Mode. The speed dials (or
memory dials) are set up in the Menu Mode of this manual. The TRC can have 9 speed dial memory locations set
up in memory, which are associated with the 1-9 keys. Press and release the * key and the press and hold the
desired 1-9 key for 1 second and the unit will automatically dial the associated speed dial.

Selective Call Decode with Mute Mode:

When enabled the TRC will remain muted until called. The TRC can operate in a normal manner even when this
feature has been enabled. By default, this feature will be disabled. The following paragraphs discuss how to
utilize this feature.

Enabling/Disabling the Un-Mute When Called Feature:

To enable the feature, a Console ID must be programmed into the desktop unit. It is highly recommended
that this ID be at least a minimum of 4 digits in length to reduce the potential of false decodes. The maximum
number of digits can be up to 8 digits. To disable this feature, you must clear the Console ID field and press
the SEND/Enter key to write and update the changes.

Answering an Incoming Call:

When a selective call is placed to a TRC the TRC will ring 3 times and then open the speaker for audio to be
heard. Pressing the SEND key answers a call during the ringing, so the called party does not need to wait for
the 3 rings to finish. To talk with the caller the SEND key or INTER key can be used. The SEND key can be
used to talk with field radios or parallel remotes. The INTER key can be used to talk with parallel remotes
only, so field radios cannot hear the conversation.

Once the call is completed the TRC will re-mute automatically after 30 seconds or pressing the MONITOR key
will force the TRC to mute.

Placing a Selective Call to a Parallel Remote:

Press the “0” hot-key or access the CALL option in the menu, which will bring up the User ID prompt. At this
point the ID can be entered manually or the user can scroll through the database by pressing the * key and
then using the FREQ and INTER buttons to scroll. The * key toggles between ID or name entry. Once the
desired ID is entered press the SEND key. The display will ask if the selective call is local to a parallel remote.
If yes, press SEND if no, press #. Pressing SEND for local causes the remote not to generate tone remote
tones, so the dialing sequence does not go over the air. Pressing # causes the remote to generate tone
remote tones, so the dialing sequence does out over the air.

Once the call is completed the TRC will re-mute automatically after 30 seconds or pressing the MONITOR key
will force the TRC to mute.

Menu Mode:

For details on the Menu Mode please reference the Product Programming section.

14

A

A

PRODUCT PROGRAMMING

The following is a map of the menu system in the TRC. Menu shortcut numbers are shown to the right of the
menu item to which it applies.

MAIN MENU

CALL <0>
LOCK/UNLOCK

ACTIONS <1>

Spy
Clear ANI Log
Kill

USERS

dd User
Edit User
Delete User

SETUP

SET DATE/TIME <2>

Date: MMDDYYYY
Time: HHMMSS

SPEED DIAL SET <3>

Speed Dial
Speed Dial 1
Speed Dial 2
Speed Dial 3
Speed Dial 4
Speed Dial 5
Speed Dial 6
Speed Dial 7
Speed Dial 8
Speed Dial 9

SOUNDS SETUP <4>

Keypad Beep
Beep On ANI
Emerg Siren
Go-ahead Beep
Cross Mute

uto Mute Time

CONSOLE SETUP <5>

Data Entry Mode
Func Display
Ignore Nonuser
Fast Scrolling
Contrast
Timeout Timer
Handset Enable
Off-hook Mon
Line 2/Sup Opt
Follow Decode
Printer Option
4-Wire Option
Trunk Mode
Console ID

SECURITY SETUP <6>

Security
Password

TONES SETUP <7>

F10-F19 Entry
Tone Timing

Freq/Func Tone
Hi Level Guard
Monitor Tone

Guard Tone
Monitor Tone
Freq/Func Tones

Freq/Func Number
Frequency
When To Send
Label

ENC/DEC SETUP <8>

Encode Format
Encode Time 1
Encode Time 2
Key-up Delay
Hang Time
Decode Format
Decode Time
Decode on Busy
Decode Length

STATUS SETUP

Status Feature
Emerg Status
Status 0 Msg
Status 1 Msg
Status 2 Msg
Status 3 Msg
Status 4 Msg
Status 5 Msg
Status 6 Msg
Status 7 Msg
Status 8 Msg
Status 9 Msg

UTILITIES <9>

Generate LLGT
Gen Test Tone
Notch Adjust
Reset Defaults
Clear Database
Factory Debug

15

Navigating the Menus

Press the key MENU key while in Control or ANI Review 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. When MENU is first selected the first available selection is for the CALL command.

The FREQ and INTER keys become scroll keys just as they do in ANI Review Mode. The scroll right symbol on
the right side of the display indicates that additional items are available. Press the INTER (SCROLL >) key to view
the next available item. The scroll left symbol will then appear, indicating that the FREQ (SCROLL <) key may be
used to go back to the previous item.

To select the displayed item, press the SEND key (the SEND key is the ENTER key 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 CLR key to return to the previous selection.

When in menu mode, the number keys become menu shortcut keys which allow you to quickly jump to certain
menus without scrolling. For example, pressing MENU followed by a <5> jumps directly to the Console Setup
menu. One exception to this is the 0 key, which jumps directly to the call mode without having to press MENU.
The other shortcut keys require the MENU key be pressed first if not already in Menu Mode.

Numeric VS. Alphanumeric Data

There are two different data entry modes available on the TRC. Numeric entry is the default mode when calling a
unit. As numbers are entered, they appear on the bottom-left of the display. Pressing the MENU key while in
numeric entry mode changes the mode to Alphanumeric. In alphanumeric mode, you may type in letters and
numbers as shown in the table below. 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 Data Entry Mode setting in the CONSOLE
SETUP menu.

Entering Alphanumeric Data

Before you can add names to the database, you must learn the scheme for entering alphabetic characters using
the numeric keypad. 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 2
the 3

nd

rd

letter on the <2> key. The letter ‘T’ is the 1st letter on the <8> key, so its code is 81.

digit is the position of the letter on that key. For example, the code for the letter ‘C’ is 23 since it is

To enter numeric characters in alphanumeric data entry mode, 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 space=10
G=41 O=63 W=91 5=05 _=13
H=42 P=71 X=92 6=06 +=14

16

Entering Special DTMF Digits: The TRC 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. These special digits should not be used unless DTMF is used as the encode or decode
format.

17

The following sections describe the various functions of the menu system. Shortcut keys are shown for those
menu items that have shortcuts. Factory default settings are shown underlined.

CALL <0>

When the call command is selected you will be prompted to enter a user ID. You can either enter a unit ID or
scroll right to enter into the database. The database will show the user ID, if you wish to display the user name
press the MENU key to switch between the user ID and the user name. Once the desired user is found press
SEND to call the unit.

LOCK/UNLOCK

Note: The Lock and Unlock menu options do not appear unless enabled in security setup. If enabled the
password protects all options in the menu map after the call option. Enter the 4-digit password that was set up in
the security setup to unlock the menu.

ACTIONS <1>

Spy command: Allows you to remotely key-up and listen to a unit equipped with one of Midian’s UD-1/UED-1

series encoder/decoders. The code for spying on a unit must be in the user database to use this function.
Type in the user ID or scroll to the desired ID or name in the database and press the SEND key.

Clear ANI Log command: Allows you to clear the ANI log without having to turn the unit off and back on.
Kill command: Allows you to remotely disable a unit equipped with Midian’s UED-1 series encoder/decoder.

The code for killing a unit must be in the user database to use this function. Type in the user ID or scroll to the
desired ID or name in the database and press the SEND key.

USERS menu

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 followed by a Kill ID and a Spy
ID.

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
keys 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 CLR to cancel.

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. If not using the Spy or Kill features, just leave these fields blank and press
SEND.

User ID: This numeric field contains the ANI assigned to the user’s radio. This will be the number used when
calling a unit or decoding the ANI. ID’s may be 1 to 8 digits depending on the ANI format. This is a required
field.

Range: 0-8 digits
Default: blank

User Name: This alphanumeric field contains the name of the user associated with the user ID. A maximum
of 14 characters may be used.

Range: 0-14 characters
Default: blank

18

Spy ID: Specify the code required to spy on this unit. Leave blank if not using this feature.

Range: 0-8 digits
Default: blank

Kill ID: Specify the code required to disable this unit. Leave blank if not using this feature.

Range: 0-8 digits
Default: blank

19

SETUP menu
SET DATE/TIME <2>

In order for the correct date and time to be displayed, the real-time clock must be set.

Date: MMDDYYYY
Time: HHMMSS

SPEED DIAL SET <3>

Speed Dial feature: When in Control Mode or ANI Review mode, the number keys <1> through <9> may be

turned into speed dial keys by enabling this feature.

Speed dialing disabled.

OFF

ON Speed dialing enabled.

Speed Dial 1-9: To associate a unit to a speed dial number, it must be in the user database. For each speed
dial entry, simply locate the user in the database in the same manner as if placing a call to a unit.

Range: 0-14 characters
Default: blank

SOUNDS SETUP <4>

Keypad Beep: Turning this option on causes a beep to be heard for each key press.

OFF Keypad beeps off

Keypad beeps on

ON

Beep On ANI: 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.

Beep when ANI comes in.

ON

Emerg Siren: 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.

Do not sound siren on emergency ANI.

OFF

ON Sound siren on all emergency ANI’s.

Go-ahead Beep: When using the TRC as an encoder, it will take some time for the signaling to take place.
The operator must wait for this time to elapse before speaking or he/she will not be heard. The go-ahead
beep alerts the operator when the signaling is complete so they will know when it is okay to begin speaking.

Disable go-ahead beep.

OFF

ON Enable go-ahead beep.

Cross Mute: If using more than one TRC in the same room, feedback (howling) may occur if one unit is
transmitting while another is listening. Enabling Cross Mute prevents this from happening by muting the
internal speaker whenever guard tone is detected.

Cross Mute disabled.

OFF

ON Cross Mute enabled.

Auto Mute time: Specifies the amount of time after guard tone is detected that the internal speaker will be
muted. This facilitates muting of the function tone and/or signaling tones generated by parallel remotes. All
four digits must be entered. If 0000 is entered, the feature is disabled.

Range: 0000 to 9999 milliseconds
Default: 0000 milliseconds

20

CONSOLE SETUP menu <5>

Data Entry Mode: Determines if numeric entry or alphanumeric data entry is the default mode when placing a

call. The mode of entry can also be toggled by pressing the MENU key during data entry. Enable
alphanumeric mode only after entering names and numbers in the user database.

NUMERIC

ALPHA Start entry in alphanumeric mode.

Func Display: Turning on this option causes the last selected function to be displayed every 2 seconds on
the bottom line of the display when in Control Mode. This option applies only when there is a distinction
between frequency and function in your application.

OFF

ON Enable function display.

Ignore Nonuser: Turning on this option helps prevent the display of false decodes by ignoring ID’s which do
not appear in the user database.

OFF

ON Ignore ID’s not in database.

Fast Scrolling: Fast Scrolling allows for faster navigation through the menu system. When this setting is
turned off, menu items will appear to scroll 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 Scroll slowly to give side-to-side effect.

Scroll at fast speed.

ON

Contrast : Allows the display contrast to be adjusted for best viewing.

LOW

HIGH High contrast setting.

Timeout Timer: Prevents the transmitter from being keyed indefinitely if the SEND key is stuck or
unintentionally in the depressed position. The TRC will cease sending low-level guard tone and disable the
line driver after the amount of time programmed by this setting. This timer also applies to the INTER key. If set
to 00, the timeout timer feature will be disabled. Both digits must be entered.

Range: 00 to 99 seconds
Default: 00 seconds

Handset Enable: Selects which type of microphone is attached to the TRC. Be sure to set jumpers
accordingly.

OFF

ON External handset.

Off-hook Mon: If enabled, the TRC will automatically transmit the Monitor Function sequence as per FCC
requirements when the operator picks up an externally attached handset. For privately owned systems this
option can be disabled. The External Handset Option must be enabled for this setting to be recognized.

OFF

ON Automatically transmit the monitor sequence when the handset goes off-hook.

Line 2/Sup Opt: If the line-2/supervisor relay is installed, this setting must be enabled for the feature to work.

OFF

ON Line 2 or supervisor option enabled.

Follow Decode: If connected with parallel remotes, the remote can change the display to
functions/frequencies selected by parallel remotes. This helps eliminate confusion as to which channel is
currently selected at the base station.

OFF

ON Parallel Remote Update Enabled

Start in numeric only mode.

Disable function display.

Display ID’s not in database.

Low contrast setting.

Internal or gooseneck style microphone.

Do not transmit the monitor sequence when the handset goes off-hook.

Line 2 or supervisor option disabled.

Parallel Remote Update Disabled

21

Printer Option: The TRC, if ordered with the printer cable option, can log the ANI traffic to a serial printer or
computer. 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.

Do not send data to printer

OFF

ON Send data to printer

4-Wire Option: The TRC, if ordered with the TRC Option F, can work on a 4-wire system.

2-Wire

OFF

ON 4-Wire

Trunk Mode: The TRC, if ordered with the TRC Option F, can work on a 4-wire system for hearing trunking
proceed tones. Turning this field to ON changes the KEYUP DELAY under the ENC/DEC SETUP section to a
time to wait for the trunking proceed tones before the dispatcher can talk.

Keyup Delay

OFF

ON Trunking Delay Time

Console ID: The TRC supports remotes being selectively called by another remote or a field radio in DTMF,
5-Tone or Pulse Tone. The format of the ID is based upon the Decode Format programmed under the
ENC/DEC SETUP section. The length of the ID is based upon the Decode Length programmed under the
ENC/DEC SETUP section.

22

SECURITY SETUP menu <6>

Security: Allows the security option to be turned on and off. If off, the Lock/Unlock menus will not appear.

Disable security feature

OFF

ON Enable security feature

Password: Sets the password used to unlock the menu system when the security is enabled. Must be 4
numeric digits.

Range: 4 digits
Default: 0000

TONES SETUP menu <7>:

F10-F19 Entry: By default, the TRC will expect one digit to be pressed after the FREQ key is pressed. This

however prevents the use of F10 – F19 function tones. If these tones are to be used, turn on this setting. This
will cause the TRC to wait 2 seconds after FREQ <1> is pressed for the 2

nd

digit. If no 2nd digit is entered after

2 seconds (or SEND is pressed), F1 will be selected.

Disable F10 – F19 entry

OFF

ON Enable F10 – F19 entry

Tone Timing: This menu allows the modification of the default timing of the frequency/function tones, the high
level guard tone, and the monitor tone. Any of these tone types may be disabled by setting the timing to 0000.
All four digits must be entered.

Freq/Func Tone

Range: 0000 to 9999 milliseconds
Default: 0040 milliseconds

Hi Level Guard

Range: 0000 to 9999 milliseconds
Default: 0120 milliseconds

Monitor Tone

Range: 0000 to 9999 milliseconds
Default: 0040 milliseconds

Guard Tone: This changes the guard tone frequency. All four digits must be entered.

Range: 2100 to 3100 Hz
Default: 2175

Monitor Tone: This changes the guard tone frequency. All four digits must be entered.

Range: 0550 to 3100 Hz
Default: 2050

FreqFunc Tones: This allows editing the attributes for each of the frequency/function tones F1 – F19. There
are three attributes of each tone that you can change. The defaults for each tone are shown in the table
below.

Freq/Func Number: Select the Freq/Func tone number whose attributes you with to edit using the
SCROLL buttons. When the desired tone number is displayed, press SEND. You will then be prompted to
modify or accept each of the three attributes associated with that tone. To leave an attribute unchanged,
simply press SEND to accept the value. All three attributes must be modified or accepted for the changes
to take effect.

Frequency setting: This allows you to pick a custom frequency for each tone. Note that all four digits
must be entered.

Range: 0550 to 3100 Hz
Default: see below

23

When to Send setting: Select when the frequency/function tone is sent. The options are as follows:

AFTER SEND: The tone will be sent after high level guard tone every time the SEND key is pressed

and ONLY after the SEND key is pressed. Therefore this setting is applicable only when the tone is
used only for TX frequency control.

AFTER FREQ: The selected tone will be sent (preceded by high level guard tone) immediately after
being selected by pressing FREQ followed by the tone number. The tone to be sent after pressing
SEND will not be changed. This is the setting to select when the tone is used for function control only.
It will be classified as a function when function display is turned on. This could also be used for RX
frequency control (if different from TX).

BOTH: The selected tone will be sent (preceded by high level guard tone) immediately after being
selected by pressing FREQ followed by the tone number. This tone will also be sent the next time
SEND is pressed. This is the setting to select when the tone is used for both RX and TX frequency
control (most common). A tone with this setting will be treated as a frequency as opposed to a
function.

Label setting: Allows you to label the frequency/function tone to clarify how it is being used. The
programmed label will appear when in Control Mode.

Range: 0-8 characters
Default: see below

Freq/Func Defaults: The following are the default attributes for the frequency/function tones when
shipped from the factory:

Tone Frequency When to Send Label

F1 1950 BOTH CHAN 1
F2 1850 BOTH CHAN 2
F3 1750 BOTH CHAN 3
F4 1650 BOTH CHAN 4
F5 1550 AFTER FREQ FUNC 5
F6 1450 AFTER FREQ FUNC 6
F7 1350 AFTER FREQ FUNC 7
F8 1250 AFTER FREQ FUNC 8
F9 1150 AFTER FREQ FUNC 9
F10 1050 AFTER FREQ FUNC 10
F11 950 AFTER FREQ FUNC 11
F12 850 AFTER FREQ FUNC 12
F13 750 AFTER FREQ FUNC 13
F14 650 AFTER FREQ FUNC 14
F15 550 AFTER FREQ FUNC 15
F16 2350 AFTER FREQ FUNC 16
F17 2450 AFTER FREQ FUNC 17
F18 2550 AFTER FREQ FUNC 18
F19 2650 AFTER FREQ FUNC 19
Note: F16 through F19 do not have standardized tone definitions.

24

ENC/DEC SETUP menu <8>
Encode Format: The tone-signaling format used to encode outgoing calls. Please note that a number of the

formats employ tones that should not be used unless a non-standard guard tone is used by the system. Please
refer to the Tone Signaling section for signaling format compatibility.

Encode Time 1: When using 2-tone or 5-tone, this sets the length of time for the first tone of the sequence. When
using DTMF or Pulse Tone, this is the tone ON time.

Range: 0005 to 9999 milliseconds
Default: 0050 milliseconds

Encode Time 2: When using 2-tone or 5-tone, this sets the duration of each of the remaining tones of the
sequence. When using DTMF or Pulse Tone, this is the tone OFF time (between digits).

Range: 0005 to 9999 milliseconds
Default: 0050 milliseconds

Key-Up Delay: This is the amount of time the TRC will wait after sending guard and function tone before sending
the encode sequence over the air. This time allows for delays introduced by repeaters and decoding of squelch
control signals such as CTCSS.

Range: 0005 to 9999 milliseconds
Default: 0100 milliseconds

Hang Time: Low-level guard tone will continue to be sent for this much time after encoding is completed. This
gives the operator time to say a brief voice message, or to press SEND before the guard tone drops. Hang time
does not apply when unless making a encoding.

Range: 0000 to 9990 milliseconds
Default: 0000 milliseconds

Decode Format: The tone-signaling format of the incoming ANI's. The Encode and Decode formats may be
different if desired.

Decode Time: When using 5-tone the decode time should be ~1/5

th

of the encode time in 5 msec increments. For
example, if the encode timing is 70 msec per digit, then the Decode Time should be set to 15 milliseconds. When
using DTMF or Pulse Tone, 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. We recommend 1000 for DTMF and 0250 for Pulse Tone.

Range: 0005 to 9995 milliseconds
Default: 1000 milliseconds

Decode on Busy: To prevent encodes from parallel remotes from being decoded, the TRC will ignore any
signaling that is received when guard tone is present (busy LED is flashing). This can be overridden by turning
this setting on.

OFF Ignore signaling when busy is flashing.

Decode sig naling even when busy is flashing.

ON

Decode Length: By default, the TRC will display decodes of 1 to 8 digits in length. This can result in false

decodes, especially when using one of the 5-tone decode formats. Change this setting to restrict decodes to the
specified number of digits. Be sure to count the status digit if the status feature is enabled.

Range: Any Length or 1-8
Default: Any Length

25

STATUS SETUP
Status Feature: 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, even for a normal ANI. For example ANI 1234 would send 12340 for a normal ANI and Status
Message 0 would be left blank.

Disable status feature.

OFF

ON Enable status feature.

Emergency Status: When enabled, the Emergency Status option treats any ANI with 9 as the last digit as an
Emergency ANI. When an emergency ANI comes in, the Emerg Siren sound will alert the system operator of the
emergency situation (if it is enabled). 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.

Disable emergency status feature.

OFF

ON Enable emergency status feature.

Status 0-9 Msg: 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

UTILITIES menu <9>

Generate LLGT: Causes the TRC to generate low-level guard tone continuously until told to quit. This utility

may be also be used to adjust the TX audio level. Press CLR to stop tone generation when done.
Gen Test Tone: Causes the TRC to generate high level guard tone followed by a function tone. After that, a

1007 Hz test tone along with low-level guard tone will be generated for 10 seconds. This is useful for the
measurement of signaling modulation.

Notch Adjust: Causes the TRC to generate a test tone at the guard tone frequency continuously until told to
quit. The speaker is enabled while generating so that the RX notch filter may be adjusted. This utility may be
also be used to adjust the TX notch filter. Press CLR to stop tone generation when done.

Reset Defaults: This will reset all the parameters listed above to the factory default settings. The contents of
the user database will not be affected.

Clear Database: This will clear the user database of all ID's and User Names. The contents of the other
parameters listed above will not be affected.

Factory Debug: This is used by the factory for product testing. Select this function only if directed to do so by
Midian Technical Support.

26

TONE SIGNALING FORMATS

Tone Encoding Tables

Entering a user ID number, often called a CAP code, is straightforward for most of the encoding formats
supported by the TRC. For example, when encoding DTMF or 5-tone, the digits 0-9 are simply typed in directly.
Some formats do not allow for this straightforward approach. These are Plectron, Quick Call I, and Avcall. This
section explains how to enter a code in these formats.

Plectron Encoding: To encode Plectron, four digits must be used. The first two digits represent the 1

nd

the 2

two digits represent the 2nd tone. Simply locate the code associated with each tone from the table. For

example, the tone sequence 454.6 + 2688 would be entered as 1253.

Plectron Tones
01
02
03
04
05
06
07

282.2

294.7

307.8

321.4

335.6

350.5

366.0

08
09
10
11
12
13
14

382.2

399.2

416.9

435.3

454.6

474.8

495.8

15
16
17
18
19
20
21

517.7

540.7

564.6

589.7

615.8
643
672

22
23
24
25
26
27
28

701
732
765
799
834
871
910

29
30
31
32
33
34
35

950

992
1036
1082
1130
1180
1232

36
37
38
39
40
41
42

1287
1344
1403
1465
1530
1598
1669

43
44
45
46
47
48
49

1743
1820
1901
1985
2073
2165
2260

50
51
52
53
54
55
56

st

tone, and

2361
2465
2574
2688
2808
2932
3062

57
58
59

3197
3339
3487

Avcall & Motorola Quick Call 1 Encoding: Avcall and Quick Call 1 are dual-tone formats, which means a pair of
tones are sent simultaneously. Two tone-pairs are sent, meaning that four tones in total must be selected. Like
Plectron, above, two digits are entered for each tone. Locate the desired tone in the table to find its corresponding
code. A total of 8 digits must be entered. For example, the tone sequence 645.7 & 312.6 + 881.0 & 1479.1 would
be entered as 07001015.

Avcall & Motorola Quick Call 1 Tones
00
01
02
03
04
05
06

312.6

346.7

384.6

426.6

473.2

524.8

582.1

07
08
09
10
11
12
13

645.7

716.1

794.3

881.0

977.2

1083.9

1202.3

14
15
16
17
18
19
20

1333.5

1479.1

398.1

441.6

489.8

543.3

602.6

21
22
23
24
25
26
27

668.3

741.3

822.2

912.0

358.9

1011.6

1122.1

28
29
30
31
32
33
34

412.1

457.1

507.0

562.3

623.7

691.8

767.4

35
36
37
38
39
40
41

851.1

944.1

371.5

1047.1

1161.4

384.6

426.6

42

473.2

43

524.8

44

582.1

45

645.7

46

716.7

47

794.3

48

881.0

49
50
51

346.7

977.2

1084.0

27

Signaling Format Compatibility

In tone remote systems, the industry standard 2175 guard tone is filtered out by the tone remote adapter at the
base station so that it is not heard over the air. This filter can affect signaling tones close to 2175 Hz. Tones within
+/-70 Hz could be attenuated to a level such that they cannot be decoded by receiving equipment. There are
several ways to deal with this issue:

1. Choose a format that will not be affected.

2. Do not use the affected tone(s).

3. Change the guard tone.
The last solution involves re-tuning the notch filters on the TRC. This can be done at the factory upon request

(recommended). It also requires that the guard tone and notch filters on the tone remote adapter be changed as
well. While Midian’s products allow for this, not all do. Please note that this issue often applies to decoding as
well. Many tone remote adapters notch 2175 out of the receive audio as well. This possibility should be
investigated if decode problems are experienced. The following sections address the formats and tones that are
likely to be affected.

ZVEI: All ZVEI formats use 2200 Hz for either the ‘0’ or the ‘9’ tone. This is only 25 Hz away from the standard
guard tone frequency of 2175. The best solution to this problem is to simply not use the ‘0’ tone when encoding
DZVEI and not use the ‘9’ tone when encoding ZVEI or DDZVEI formats. Alternatively, the guard tone could be
changed to another frequency. If this is done, it should be at least 150 Hz away from the nearest frequency used
by the format. 2970 Hz is a common choice.

CCIR and EEA: CCIR and EEA both use the tone 2110 Hz as the ‘repeat’ tone. This tone indicates that the
current digit is the same number as the last digit. The best solution to this problem is to simply not use codes that
have repeating digits. That is to say, do not use a code where a digit appears next to itself in the code such as
‘12334’ which has two 3’s in a row. Another solution is to change the guard tone. If this is done, it should be at
least 150 Hz away from the nearest frequency used by the format. 2970 Hz is a common choice.

Other Affected Formats: REACH two-tone, tone group A, uses 2274, 2196, and 2121 Hz to represent the digits
6, 7, and 8. Do not use tone group A if using this format. PLECTRON tones 2260 and 2164 should not be used.

Formats Not Affected: The following formats do not use tones between 2105 and 2245 and therefore should be
unaffected by the guard tone filter: AVCALL, DTMF, EIA, EUROSIGNAL, GE, MODAT, NATEL, QUICK CALL I,
and QUICK CALL II.

28

SYSTEM ERROR MESSAGES

DATABASE EMPTY
Reason: An attempt was made to edit or delete a user when the database was empty.

Solution: These functions do not apply when the database is empty.
DATABASE FULL
Reason: An attempt was made to add a user to the database and there is no more room. The maximum number

of user aliases of 128 cannot be exceeded.
Solution: Remove any old user names that are no longer in service. If this is not possible, contact Midian to learn
about our Computer Aided Dispatch (CAD) fleet management systems which can handle many more users.

DATABASE ERROR
Reason: One or more entries in the user database has been corrupted. This can happen if power is lost at the

exact time the database is being updated. Any corrupted records will be blanked-out and must be re-entered.
Solution: Cycle power to the unit. This should clear the error. If the error message continues to come up, contact
Midian technical support.

DUPLICATE ID
Reason: An attempt was made to add a user ID to the database which is already in the database. Each user ID in

the database must be unique.

Solution: Choose a unique user ID for each user. If it is necessary to edit the user record, use the edit menu.
EE CHKSUM ERR
Reason: The configuration settings stored in EEPROM have been corrupted. This can happen if power is lost at

the exact time a parameter is being updated. All configuration settings will be set back to defaults. The user
database should not be affected.
Solution: Cycle power to the unit. This should clear the error. If the error message continues to come up, contact
Midian technical support.

EE WRITE FAIL
Reason: The EEPROM chip or connections to it have failed.

Solution: Contact Midian for instructions on getting the unit repaired.
FIELD IS BLANK
Reason: An attempt was made to place a call, but the user ID or name was blank. An attempt was made to spy

or kill and the respective field in the database is blank.
Solution: When placing a call, be sure an ID number or user name is displayed before pressing SEND. The spy
and kill functions require there be an entry in the respective field of the user database.

COPRO TIMEOUT
Reason: This message indicates that the coprocessor is not responding to commands from the main processor.

Generally, this message should never be seen.
Solution: If this message is displayed, press the CLR key several times, three seconds apart, until the unit
returns to normal. If it does not, try turning the power off and back on again. If this message continues to be
displayed, or is displayed frequently, contact Midian technical support.

29

NOT FOUND
Reason: There is no entry in the user database that matches the data entered.

Solution: When selecting a user to call, the name or the ID can be entered in whole or in part. When entering a

partial name or ID, press the right SCROLL button to search the database for the first partial match. Press SEND
only if the whole ID or name has been entered. There may be no entry in the database that matches in whole or in
part. In that case, the user must be added to the database.

SPEED DIAL EMPTY
Reason: You have pressed a speed dial number, but there is no user associated with it. The user may have been

deleted, or no association was ever made.
Solution: Go to speed dial setup and associate a user in the database to the speed dial number.

30

THEORY OF OPERATION

Initial Power-up: Upon power-up the TRC defaults to Frequency 1 when the [SEND] button is pressed.
Analog Circuit
RX Audio Input Path: RX audio from a tone remote adaptor at the remote site travels down the phone line to the

RJ-11 line interface connector PL-1. Line 1 uses the standard red/green Telco ring tip on positions 5 and 6 of the
RJ-11 cable or pins 5 and 6 of the RJ-45 10-pin connector. This signal is fed into a transient absorber across the
line, then through an auto-resettable polyswitch fuse to another set of transorbs that can shunt a signal to ground
if the ground lead is tied to Earth. There are then 2 capacitors across the line, which also go to Earth to remove
RF. The audio signal is then fed into transformer T201 through jumpers JP202 and JP203 or Line 2 relay K201.
From the bottom winding of T201 audio is fed to jumper JP204 contacts 1 and 2 or contacts 2 and 3 if using T202
in a 4-wire duplex configuration. From JP204 audio is fed into the RX Input Gain Pot RP-306 where the output
level of the RX line amp U302 is typically set to 200 mV p-p with –20 dbm from a Line Test Set tone generator.

There is a disable transistor Q303 that can mute the incoming audio under microprocessor control. Coming out of
the RX line amp the audio is passed to the compression circuit U102B. The audio output of the compressor is
also about 165 mV p-p and will change no more than 3 db over a 30-35 db input change. The audio then goes
into the RX Bandpass amplifier U301D and the output of this Bandpass is fed into the Guard Tone detector which
turns on the busy light and depending on how the unit is programmed can activate the crossmute function when
another unit in the same room is transmitting to prevent howling and feedback. The output of the Bandpass is also
fed over to the RX notch filter U301C through a nulling pot. When the Bandpass filter has been tuned to the
appropriate frequency for the desired Guard Tone (usually 2175 Hz) its output is fed through the nulling pot and
R303 and R346 where it mixes with audio from R324 coming from the compressor. These two signals cancel at
the summing input of Notch filter U301C thus removing the continuous Guard Tone audio leaving only the
resulting voice and dialing audio to be transmitted through the volume control SR601B to the speaker amplifier.
Keypad beeps are also input on this same pot to be heard out the speaker. When the handset is taken off-hook,
the magnetic reed switch located inside of the handset opens it’s contact which signals the microprocessor to
activate transistor Q302. Activating transistor Q302 mutes the speaker amplifier. Audio from U301C is fed into
ear level RP304 which drives the earpiece driver Q303B to drive the handset earpiece. There is also an ear mute
transistor Q304 that allows the microprocessor to mute the earphone. There is also a jumper JP302 that feeds
handset mic audio back into the earpiece for sidetone. This jumper should not be used in 4-line duplex mode.
There is another jumper JP201 that feeds DTMF and paging and dialing tones into the RX audio path so that they
can be heard during the dialing time.

TX Audio Output Path: Mic bias is developed with R100, R134 and R101. This provides mic bias to either the
internal mic, or gooseneck mic. These are all electret type mics. When using the internal mic or gooseneck mic,
Q306 switches audio into the mic amp U101A where the gain is set by RP101. Q101 on the input of the mic amp
kills mic audio during the High-Level function tones and dialing times. Coming out of the mic amp the audio level
is approximately 200 mv peak to peak where it is fed into the compressor U102A. The audio out of it is also about
200 mv peak to peak and will change no more than 3 db over a 30-35 db input change. It is then fed into notch
filter U103C and U103D. This notch filter is usually set to the standard Guard Tone of 2175 Hz and is designed to
remove 2175 Hz components from the voice so that they do not mix with the 2175 tone generator and cause
phase cancellation and thus momentary breaks in the Low-Level Guard Tone. The notch filter feeds into the audio
mixer along with the signaling and dialing tones from the digital to analog converter. The tones and voice out of
the audio mixer are presented to the TX line level pot RP202 and then to the line amplifier U201A. U201A then
feeds the top winding of T201. When the line level pot RP202 is set all the way to maximum it is sufficient to drive
a single phone line with up to 8 additional tone remotes to about +10 db on the high level guard tone.

The regulator has an input from a wall charger of around 16-20 volts which is passed through a auto-resettable
polyswitch F601 into transient absorber TZ601, then through the volume control on/off switch SR601A to an RF
bypass cap C602, across several filter caps into the input of the 13.4 volt regulator. D601 is a reverse polarity
diode that will blow the auto-resettable polyswitch if the power is reversed. Powering off for one to two seconds
will reset the polyswitch. The output of the 13.4 volt regulator is fed to all of the analog circuitry on the analog
schematic page. U303A has a voltage divider R373 and R374 that creates the analog pseudo ground reference to
all of the op amps on the analog schematic page.

31

Digital Circuit

There are three microprocessors on the digital schematic page. U402 controls the keypad interface and also talks
to the LCD. In addition it generates the keyboard beeps to the speaker amp, it controls the speaker mute when
the handset is taken off-hook. Additionally, it controls the Line 2/Supervisor to the line relay on the analog page.

Microprocessor U401 generates the Guard Tone, function tones and signaling tones on its B0-B7 port. These
tones are fed into U405 the DAC output over to the analog page. U401 also controls PTT disable, PTT mic enable
and ear mute. Both of these microprocessors get their voltage from 5-volt regulator U601.

Microprocessor U403 controls the printer option U404 and decodes the high and low level guard tone, as well as
the function tones.

Microprocessor U407 is the real time clock chip with battery back-up.
U502 is the DTMF decoder chip.
U503 is the 5-Tone decoder chip.

32

No technical notes are available at this time.

MIDIAN CONTACT INFORMATION

Midian Electronics Inc.

2302 East 22

nd

Street

Tucson, Arizona 85713 USA

Orders: 1-800-MIDIANS
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.midians.com

TECHNICAL NOTES

33

- This page intentionally left blank -

A

B

C

D

E

TP501TP501

C503

C525

C525

C5261uC526

R511

R511
100K

100K

C509

C509

.022u

.022u

13

12

C514

C514

.001u

.001u

+5V

R524

R524
470K

470K

+5V

147

CLK_A

1u

C508

C508
100p

100p

+5V

-

-

+

+

9

8

5

6

C527

C527

C522

C522
.022u

.022u

R452

R452

NOTE4

NOTE4

+5V

C503

.01u

.01u

+5V

C533

C533

411

U503D

U503D
LM324

LM324

U505C

U505C
4070

4070

U505B

U505B

4070

4070

TP505TP505

SPARES

.1u

.1u

11

U505D

U505D
4070

4070

C524

C524

.1u

.1u

.1u

.1u

RP502

RP502

R504

R504
470K

470K

C504

C504

R5061MR506
1M

5

6

14

100K

100K

.1u

.1u

14

11

19

D501AA6D501A

A6

1 2

D501BA6D501B

A6

+

+

-

-

U503B

U503B
LM324

LM324

10

4

C523

C523

.1u

.1u

1

2

7

8

9

R507

R507

470K

470K

31

C531

C531

.1u

.1u

14

U506B

U506B
4520

4520

RX_IN

XTAL

XTAL

NC2

NC3

NC4

VBIAS

CDRC

R5051MR505

1M

7

3

4

TP502TP502

+5V

R525

R525

27K

27K

Q3

+5V

+5V

16

VCC

PCBin

VCOout

20

VCC

U508

U508

CMX469AD3

CMX469AD3

C502

RP501

RP501

100K

100K

VAN_D

VAN_D

C502
100p

100p

R502

R502

10K

10K

123

123

2

-

-

1

3

+

+

U501A

U501A
LM358

LM358

OPTION 100

DTMF

R503

R503

10K

10K

C501

C501

R501

DECODER_AUDIO

R501

4 4

+5V

+5V

C529

C529

84

.1u

.1u

6

-

-

7

5

+

+

U501B

U501B
LM358

LM358

C534

C534

.47u

.47u

R533

R533

10K

10K

R534

R534

8.2K

8.2K

10K

10K

2.3 VOLTS

DIGITAL REFERENCE

.022u

.022u

TP507TP507

+

+

C528

C528

2.2u

2.2u

OPTION 200

5 TONE

3 3

R517

R517

10K

10K

R522

R522

15K

15K

R523

R523
240K

2 2

1 1

240K

OPTION 300 - ZAP FORMAT

OPTION 400 - GSTAR FORMAT

OPTION 500 - MDC FORMAT

R518

R518

7.5K

7.5K

R508

R508

10K

10K

C512

C512

.01u

.01u

C513

C513
.01u

.01u

3

C506

C506
.01u

.01u

VAN_D

U505A

U505A

C517

C517
.047u

.047u

C518

C518
.0047u

.0047u

R528

R528
240K

240K

C520

C520
.001u

.001u

4070

4070

R509

R509
200K

200K

C507

C507
560p

560p

3

2

+

+

-

-

U503A

U503A
LM324

LM324

R510

R510

15K

15K

1

SPARE

R5201MR520

1M

27K

27K

U504B

U504B
LM324

LM324

1

2

-

-

+

+

7

VAN_D

C535*C535

*

U504C

U504C
LM324

LM324

R5350RR535
0R

8

+5V

2

-

-

3

+

+

+5V

6

U506A

U506A

4520

4520

VAN_D

C521

C521

.1u

.1u

411

U504A

U504A

Q3

C532

C532

.1u

.1u

LM324

LM324

2

8

1

EN

GND

16

VCC

Q03Q14CLK

13

12

R521

R521
150K

150K

7

CLR

5

Q2

1

-

-

14

+

+

U504D

U504D
LM324

LM324

+5V

12

13

CLK_B

NOTE3

NOTE3

R519

R519

6

-

-

5

+

+

9

10

OPTION 600 - FLEETSYNC FORMAT

A

C401

C401

22p

22p

19

16

18

R512

R512

39K

39K

R515

R515

10K

10K

14

PCAin

+5V

16

10

EN

VCC

GND

Q011Q112CLK

8

18

CLK_RATE

RX_DATA

RX_SYNC

TX_DATA_IN

TX_SYNC

1200/2400

VSS

10

3

GS

2

IN-

St/GT

7

NC1

NC2

ESt

1

IN+

4

VREF

C515

C515

.0022u

.0022u

NOTE2

C516

C516

.0022u

.0022u

NOTE2

C1A6C1B

U507

U507

74HC4046

74HC4046

R1

11

RP503

RP503

100K

100K

15

CLR

TX_OUT

TX_ENA

CD

4800

9

OSC2

R513

R513
200K

200K

C510

C510

.001u

.001u

R516

R516

7.5K

7.5K

Q2

9

R401

R401

4.7M

4.7M

Y401

Y401

3.58M

3.58M

U502

U502

8870

8870

7

R2

12

C530

C530

4

6

12

13

15

5

3

16

17

10

.1u

.1u

13

5

PC1out

PC2out

PCPout

SFout

VCOin

INH

ZEN

VCC

TOE

STD

PWDN6INH5GND

10

9

8

GND

FFSK

8

OSC1

Q1

Q2

Q3

Q4

R532*R532

B

R5141MR514

C511

C511
.01u

.01u

2

13
15
1
10

9

*

1M

+

+

-

-

C427

C427

22p

22p

20

11

C505

C505

.1u

.1u

12

13

14

15

17

U503C

U503C
LM324

LM324

+5V

+5V

TP506TP506

R527

R527

4.7K

4.7K

C519

C519

.1u

.1u

R529*R529

R531*R531

+5V

8

R526

R526

82K

82K

*

*

TP503TP503

TP504TP504

+5V

R405

R405

10K

10K

R453*R453

R445

R445

NOTE4

NOTE4

R447

R447

NOTE4

NOTE4

+5V

+5V

*

R402

R402
100K

100K

R404

R404
10K

10K

R407

R407
10K

10K

RESET

IC1

OUT1

OUT2

GND

LP2954IM

LP2954IM

RESET

IC1

OUT1

OUT2

GND

LP2954IM

LP2954IM

NOTE5

42

43

19

36

35

34

41

2

1

32

33

OSC2

OSC1

B5

SCK

MOSI

MISO

TCAP

IRQ

RES

RDI

TDO

5

1

2

5

1

2

38

TCMP

GND

22

+5V

R601

R601
10K

10K

+5V

C423

C423

.1u

.1u

44

4

37

VPP

VDD

U402

U402

68705C8AFN

68705C8AFN

NC33NC4

23

C610

C610
.1u

.1u

+

+

C607

C607

2.2u

2.2u

16

39

B3

D7

SS

NC1

A3

A5

A6

A7

A4

A2

A1

A0

C4

C5

C3

C0

C1

C2

C6

C7

B4

NC2

B1

B6

B7

B0

B2

15

INTEROP_XOVER

DATE

DATE

DATE

DESIGN

DESIGN

DESIGN

RESET

TP602TP602

+5V

+

+

C605

C605

C606

C606

2.2u

2.2u

560p

560p

TP603TP603

+5VLCD

.01u

.01u

C609*C609

*

C608

C608

KEYPAD_BEEP

OFFHOOK_SPKR_MUTE

EXT_HOOK/MONITOR

40

CTR

9

DB5

7

DB6

6

DB7

5

DB4

8

ENA

10

R/W

11

RS

12

CSA-13-CON

CSA-13-CON

ROW 4

27

ROW 3

26

ROW 2

28

ROW 1

31

COL 4

30

COL 3

29

COL 2

25

COL 1

24

17

MIC_AUD_SELECT

18

L2/SUPER LED

14

SEND LED

20

BUSY LED

21

13

HANDSET_PTT

C420

C420

.1u

.1u

MIDIAN ELECTRONICS, INC.

MIDIAN ELECTRONICS, INC.

MIDIAN ELECTRONICS, INC.

NOV. 16, 2004

NOV. 16, 2004

NOV. 16, 2004

CJS

CJS

CJS

DWN. BY

DWN. BY

DWN. BY

REV.

REV.

REV.

AWS

AWS

AWS

07/06/2008

07/06/2008

07/06/2008

LCD INTERFACE OPTION

PL7

PL7

CSA-13-CON

CSA-13-CON

PL6

PL6

C417

C417

560p

560p

C4181uC418

1u

11

1

3

10

9

12345678910111213

NOTE5

+5V

R435*R435

R4361KR436
1K

*

+5V

R4370RR437
0R

C408

C408

.001u

.001u

C409

C409

.01u

.01u

+5VLCD

KEYPAD INTERFACE

13

+5V

C419

C419

.1u

.1u

16

2

V+

VCC

T2_OUT

V-6GND

15

13

R1_IN

4

C2+

C421

C421
.1u

.1u

5

C2-

14

7

8

R2_IN

C422

C422
.1u

.1u

TRC SERIES

TRC SERIES

TRC SERIES
MCU

MCU

MCU

SIZE

SIZE

SIZE

D

D

D

T1_IN
C1+

U404

U404

MAX232A

MAX232A

C1-

R1_OUT12T1_OUT

T2_IN

R2_OUT

456789101112

+5V

R440

R440

4.7K

4.7K

R432

R432

+5V

47K

47K

R406

R406
100K

100K

D401AA7D401A

A7

12

P3P3

P4P4

TXD2

RXD2

SCHEMATICAPPR.

SCHEMATICAPPR.

SCHEMATICAPPR.

COPYRIGHT © 2004

COPYRIGHT © 2004

COPYRIGHT © 2004

E

3

Q401

Q401
BSS

BSS

C410

C410
100p

100p

C411

C411
100p

100p

C412

C412
100p

100p

C413

C413
100p

100p

C414

C414
100p

100p

C415

C415
100p

100p

C416

C416
100p

100p

1

2

+5V

LINE_2/SUPERVISOR

PTT_LINE_AMP_ENABLE

1

2

3

4

5

6

7

8

REV

REV

REV

G-1

G-1

G-1

SHEET

SHEET

SHEET

of

1 2

of

1 2

of

1 2

PL4

PL4

RJ-11

RJ-11

PRINTER
OPTION

FILE NAME

FILE NAME

FILE NAME

TRC-500

TRC-500

TRC-500

DOCUMENT NUMBER

DOCUMENT NUMBER

DOCUMENT NUMBER

500-MCU

500-MCU

500-MCU

+5V

R4440RR444

0R

JP4011JP401

CLK_B

+5V

43

OSC1

U401

U401

68705C9AFN

68705C9AFN

CAD

GND

NC33NC4

22

44

4

37

SS

VPP

VDD

C5

SCK

MISO

MOSI

A0

C3

B7

B6

B5

B4

NC2

B3

B2

B1

B0

A2

C0

A7

TDO

RDI

RES

23

42

OSC2

6

A6

8

A4

7

A5

9

A3

11

A1

41

TCAP

2

IRQ

39

D7

40

NC1

24

C7

27

C4

30

C1

25

C6

38

TCMP

29

C2

26

36

34

35

12

28

21

20

19

17

18

16

15

14

13

10

31

5

33

32

1

+5V

C403

C403

.1u

.1u

R442

R442
100K

100K

TP401TP401

R409

R409

20K

20K

R411

R411

20K

20K

R413

R413

20K

20K

R415

R415

20K

20K

R417

R417

20K

20K

R419

R419

20K

20K

R421

R421

20K

20K

R423

R423

20K

20K

PTT_DISABLE

PTT_MIC_ENABLE

EAR_MUTE

RESET

R443

R443

100K

100K

R408

R408

R403

R403
200K

200K

R426

R426
100K

100K

R410

R410
10K

10K

R412

R412

10K

10K

R414

R414

10K

10K

R416

R416

10K

10K

R418

R418

10K

10K

R420

R420

10K

10K

R422

R422

10K

10K

R424

R424
20K

20K

32.768KHz

32.768KHz

BR20321VB

BR20321VB

1

C428

C428

22

.1u

.1u

33

+5V

R441

R441
100K

100K

39K

39K

C404

C404
220p

220p

14

20

R530

R530
100K

100K

47K

47K

55

B7

3

SCLK/A4

2

MISO/A3

MOSI/A1

A0

19

R446

R446

100K

100K

C424

C424
.0022u

.0022u

13

B6

4

A2

1

17

OSC2

MCLR

U406

U406

PIC16F716

PIC16F716

B07B5

FFSK

R438

R438
470K

470K

16

18

R448

R448

62K

62K

8

VDD15VDD

B1

OSC1

R449

R449

30K

30K

9

B2

R450

R450

15K

15K

10

B3

11

B4

VSS5VSS

6

12

+5V

4

3

VAN_D

C429

C429

.1u

.1u

R451

R451

7.5K

7.5K

C425

C425
120p

120p

R439

R439

330K

330K

C426

C426

.01u

.01u

-

-

1

+

+

U405

U405

2 5

A11

A11

DAC_OUT

R457

R457

44

VAN_D

JP4091JP409

22

44

33

19

13

P1-1

XRES

15

P1-0

21

P2-2

8

P2-1

7

P2-3

20

P2-0

9

SMP

27

P0-6

1

P0-7

2

P0-5

6

P2-5

VSS

14

BT1

BT1

C4321uC432

Y404

Y404

1u

55

C402

C402

+5V

12p

12p

Y403

Y403

32.768KHz

32.768KHz

+5V

C431

C431

.1u

.1u

10

1

X1

U407

U407

2

X2

DS1390

+

+

DS1390

3

VBkup

5

C430

C430
100p

100p

R425

R425

R431

R431
10K

10K

100K

100K

9

4

VCC

CS

6

SQW/INT

DIN

7

DOUT

8

SCLK

GND

HLG_DET

LLG_TONE

PTT_LINE_AMP_ENABLE

FNC_TONE

R433

R433
100K

100K

1

U403

U403

8C29466

8C29466

11

+15V

D605

D605

8.2V

8.2V

1.3W

+

+

C604

C604

2.2u

2.2u

6

7

IC2

8

U601

U601

IN1

3

IN2

4

6

7

IC2

8

U602

U602

IN1

3

IN2

4

CLK_A

Y402

Y402

C405

C405

22p

22p

C406

C406

22p

22p

C407

C407

+5V

.1u

.1u

28

12

24

P0-0

P1-3

VCC

4

P0-1

25

P0-2

3

P0-3

23

P2-6

5

P2-7

+5V

R430

R430
100K

100K

4.032M

4.032M

R428

R428
100K

100K

+5V

R427

R427

4.7M

4.7M

R429

R429
47K

47K

RESET

26

P0-4

P1P1

22

P2P2

P2-4

P1-710P1-5

P1-618P1-417P1-2

16

R434

R434
10K

10K

FOR NOTE INFORMATION, PLEASE SEE ANALOG PAGE.

C

D

A

SR601A

C305

C305

2.2u

2.2u

+5V

5

VDD

U104

U104

GND

2

74LVC1G3157

74LVC1G3157

1

2

3

4

5

6

D602BA6D602B

3 1

A6

+

+

4

Z

R2250RR225

0R

SR601A
SW_VOL

SW_VOL

4 5

+15V

R373

R373

10K

10K

C320

C320

R374

R374

2.2u

2.2u

9.1K

9.1K

PTT_MIC_ENABLE

R127

R127

10K

10K

C304

C304

33u

33u

+

+

R3712KR371

2K

R3702KR370

2K

C614

C614

33u

33u

2

3

R102

R102
20K

20K

R131

R131
100K

100K

C121

C121
.01u

.01u

HANDSET_PTT

LLG_TONE

HLG_DET

R318

R318

3.3K

3.3K

7

U303B

U303B
LM324

LM324

+

+

+15V

-

-

+

+

C602

C602

560p

560p

C336

C336

411

U303A

U303A

LM324

LM324

C101

C101
560p

560p

Q102

Q102
Y25

Y25

1

JP2091JP209

Q305

Q305

BSS

BSS

1

1

-

-

+

+

VAN_A

EAR_MUTE

.1u

.1u

1

C120

C120

.1u

.1u

+5V

Q103

Q103

Y25

Y25

22

+5V

R320

R320
100K

100K

D604

D604

5.1V

5.1V

EAR LEVEL

2

2

3

3

RP304

RP304

100K

100K

6

5

C611

C611

R104

R104
100K

100K

+

+

C601

C601

33u

33u

33u

33u

7.5 VOLTS
ANALOG REFERENCE

TP100TP100

+

+

C323

C323
33u

33u

FROM

DAC_OUT

C122

C122

R128

R128
47K

47K

.47u

.47u

R132

R132
100K

100K

R133

R133

47K

47K

VAN_A

R1392KR139

2K

Q101

Q101

BSS

BSS

JP1011JP101

C324

C324

.01u NPO

.01u NPO

(0805)

+15V

C326

C326

.1u

.1u

411

-

-

1

+

+

U301A

U301A

LM660

LM660

R3611KR361

1K

GUARD TONE DETECTOR

R304

R304

43K

43K

TP306TP306

R306

R306

2.7M

C338

C338
.01u

.01u

R317

R317

10K

10K

R355

R355

4.7K

4.7K

14

U302D

U302D
LM660

LM660

R3771KR377

1K

2.7M

R376

R376

470K

470K

R315

R315

4.7K

4.7K

+

+

+

+

-

-

18 to 22 VDC

PL601

PL601

2.1 MM DC PWR JACK

2.1 MM DC PWR JACK

4 4

F601

F601

750 mA Resettable Fuse

750 mA Resettable Fuse

TZ601

TZ601
P0300

P0300

12

D601AA6D601A

A6

D601BA6D601B

3 1

12

D602AA6D602A

A6

A6

+

+

+15V

R100

R100

4.7K

4.7K
R101

R101

4.7K

4.7K

R134

C100

C100

2.2u

2.2u

R134

5.6K

5.6K

+

+

PL101PL101

1
2

GOOSENECK/INT

MICROPHONE

MIC_AUD_SELECT

3 3

R140

R140
470K

470K

C113

C113

C114

C114

.1u

.1u

3

Y0

6

S

.1u

.1u

1

Y1

+5V

R302

R302

47K

2 2

47K

EXT_HOOK/MONITOR

+15V

R353

R353
100R

100R

HANDSET

INTERFACE

PL3

PL3

RJ-11

RJ-11

09-15-2005 - HANDSET NOTE:

PLACE 10K RESISTOR
ACROSS MIKE ELEMENT

* = NOT INSTALLED

NOTE2 - ZAP FORMAT C515 AND C516 AS SHOWN.

NOTE3 - C525 = 1uF USED ONLY WITH SPECIFIC

NOTE4 - R445, R447 AND R452 = 0R WHEN INSTALLED

1 1

NOTES

GSTAR FORMAT C515 = .0047u AND

PRODUCTION DATE OF CMX469AD3

TRC-1, TRC-300, AND TRC-400

R445 AND R447 INSTALLED AND

R452 NOT INSTALLED

TRC-100/200

C516 = NOT INSTALLED

R445 INSTALLED

R447 AND R452 NOT INSTALLED

+15V OUT BLU

MIC HI YEL
EARPCS GRN

EXT MON/HOOK RED

GND BLK

EXT_PTT_IN WHT

7

8

TRC-500, TRC-600

R452 INSTALLED

R445 AND R447 NOT INSTALLED

NOTE5 - ONLY INSTALLED WHEN LCD OPTION REQUIRED.

A

B

+15V REGULATOR

1

VIN

VOUT

U603

U603
LM7815

LM7815

C209

C209

.01u

.01u

C102

C102
.1u

.1u

R141

R141

22K

22K

R103

R103

22K

22K

GND

2

3

3

RP101

RP101

100K

100K

1

C603

C603

22

.47u

.47u

VAN_A

C202

C202

R202

R202

.47u

.47u

4.7K

4.7K

DAC TONE LEVEL

C203

C203

R203

R203

3

3

.1u

.1u

10K

RP201

RP201

100K

100K

1

1

RP203

RP203

100K

100K

INTEROP_XOVER

R2010RR201

0R

C201

C201

.1u

.1u

RX NOTCH BANDPASS TUNING

R350

R350

470

470

(0805) (0805)

R309

R309

10K 1%

10K 1%

2

3

R308

R308

10K 1%

10K 1%

VAN_A

R305

R305

47K

47K

R303

R303
10K

10K

12

R307

R307

10K

10K

13

HLG_SPK_MUTE

1 2

D302AA6D302A

A6

R354

R354
100K

100K

R356

R356

100R

100R

Q304

Q304
B25

B25

B

10K

2

2

C206

C206

R217

R217

.1u

.1u

150K

150K

3

3

2

2

1

1

DAC SIDETONE JUMPER

UNDER 4-WIRE OPERATION

JP2011JP201

1

2000 T0 3100 HZ.

RP302

RP302

1K

1K

123

123

(MULTITURN)

R351

R351

2.2K

2.2K

R310

R310

10K 1%

10K 1%

-

-

7

+

+

U301B

U301B
LM660

LM660

TP302TP302

D301BA7D301B

+15V

1 3

D301AA7D301A

1 2

R3141MR314

1M

8

U302C

U302C

LM660

LM660

R375

R375

C337

C337

.1u

.1u

3.3K

3.3K
C302

C302

.022u

.022u

FNC_TONE

TP601TP601

3

+

+

C612

C612

C613

C613

33u

33u

MIC AMP

C103

C103

220p

220p

R105

R105

2

2

100K

100K

1

1

+15V

C117

C117

411

.1u

.1u

2

-

-

1

3

+

+

U101A

U101A

LM660

LM660

6

-

-

5

+

+

VAN_A

R204

R204
100K

100K

C204

C204
220p

220p

PTT_LINE_AMP_ENABLE

R221

R221

150K

150K

Q202

Q202

BSS

BSS

C205

C205

22

R31151R311

51

TP305TP305

R312

R312

10K 1%

10K 1%

6

5

R313

R313
10K 1%

10K 1%

VAN_A

A7

A7

R316

R316

10K

10K

9

-

-

10

+

+

VAN_A

C334

C334

.47u

.47u

Q301

Q301

BSS

BSS

+15V

C615

C615
33u

33u

.1u

.1u

200 mVp-p

TP101TP101

R1351KR135

1K

LINE LEVELAUDIO MIXER

HLG 13 Vp-p

TP201TP201

R2060RR206

0R

7

U101B

U101B

LM660

LM660

REF_A

SEE RX

NOTCH

R205

R205

.022u

.022u

100K

100K

C325

C325

.047u NPO

.047u NPO

(1206)

R321

R321
33K

33K

-

-

14

+

+

U301D

U301D
LM660

LM660

R3621KR362

1K

BANDPASS

HLG 11.3 Vp-p

5.8 Vp-p MIN TRIGGER

SPKR MUTE

RX NOTCH
NULLING

123

123

RP303

RP303

5K

5K

SIMPLEX HANDSET

SIDE TONE JUMPER

JP3021JP302

1

22

+5V

R369

R369
100K

100K

R368

R368

4.7K

4.7K

+

+

RP202

RP202

1K

1K

13

12

10K 1%

10K 1%

R325

R325

R322

R322

10K 1%

10K 1%

R323

R323

36K

36K

14

U303D

U303D
LM324

LM324

R2181MR218
1M

R230

R230
100K

100K

VAN_A

R366

R366

C1041uC104

1u

C1051uC105

1u

3

3

2

2

1

1

C217

C217
.001u

.001u

1

165 mVp-p

TP301TP301

43K

43K

R367

R367

470K

470K

+

+

12

-

-

13

C329 *C329 *

R106

R106
330K

330K

VAN_A

R109

R109
100K

100K

R108

R108

33K

33K

LINE AMP

R207

R207

39K

39K

JP2101JP210

22

FUTURE USE

33

22

1

R324

R324

10K 1%

10K 1%

R3460RR346

0R

RX NOTCH

R365

R365

47K

47K

R364

R364
10K

10K

R363

R363

6.2K

6.2K

R1101KR110

1K

C220

C220

.033u

.033u

Q203

Q203

BSS

BSS

33

COMPANDOR
ENABLE

JP3011JP301

COMPANDOR
BYPASS

VAN_A

+15V

R107

R107

C3071uC307

1u

3.3K

3.3K

C1061uC106

1u

R301

R301

5.6K

5.6K

R326

R326

10K 1%

10K 1%

8

U303C

U303C

LM324

LM324

C332

C332
100p

100p

R360

R360

100K

100K

R209

R209

62K

62K

3

4

5

6

1

SPK AMP

C308

C308

10u

10u

C3091uC309

1u

R3571KR357
1K

9

-

-

10

+

+

VAN_A

+

+

10

COMPANDOR

RECT_IN

ATK_CAP

G_OUT

U102A

U102A
SA572

SA572

THD_TRIM

TRK_TRIM

C109

C109

100p

100p

R111

R111

10K

10K

C1111uC111

1u

C207

C207

220p

220p

R210

R210
100K

100K

1

-

-

U201A

U201A
LM4950

LM4950

1/3

SEE

SPARE

+

+

12

-

-

13

U101D

U101D
LM660

LM660

+15V

16

14

9

8

C333*C333

*

R327

R327

100K

100K

9

-

-

+

+

U301C

U301C
LM660

LM660

R359

R359

100K

100K

C

VCC

REC_CAP

G_IN

GND

R112

R112

10K

10K

+

+

C110

C110
47u

47u

9

10

HLG 13 Vp-p

TP202TP202

3

14

COMPANDOR

VCC

REC_CAP

SA572

SA572
U102B

U102B

G_IN

GND

C310

C310

100p

100p

R330

R330

10K

10K

+

+

C311

C311

47u

47u

REF_A

SEE AUDIO

MIXER

TP303TP303

11.8 Vp-p
@0 dbm

R329

R329

4.7K

4.7K

8

FIXED

EAR

ADJ

R3581KR358

1K

C

16

2

7

8

-

-

+

+

+

+

C211

C211

10u

10u

RECT_IN

ATK_CAP

G_OUT

THD_TRIM

TRK_TRIM

R331

R331

10K

10K

U302A

U302A
LM660

LM660

1

22

33

C327

C327

1

JP3071JP307

C118

C118

+15V

.47u

.47u

C107

C107

10u

10u

+

+

C1081uC108

1u

200 mVp-p

TP102TP102

8

U101C

U101C

R1361KR136

LM660

LM660

1K

LINE_2/SUPERVISOR

13

R334

R334

12

11

10

15

+15V

411

.1u

.1u

2

-

-

3

+

+

C3031uC303

1u

C318

C318

.47u

.47u

SW_VOL

SW_VOL

SR601B

SR601B

1K

OFFHOOK_SPKR_MUTE

DUPLX TRUNK GO

AHEAD BEEP

C1121uC112

1u

R2200RR220

0R

R2220RR222

0R

1

3.3K

3.3K

C312

C312

.1u

.1u

R3321KR332

1K

C3131uC313

1u

1 3

HLG_SPK_MUTE

R1130RR113

0R

33

22

JP2051JP205

1

R212

R212
300R

300R

R211

R211
300R

300R

JP2041JP204

44

33

22

JP2111JP211

1

R333

R333
100K

100K

R336

R336

33K

33K

DECODER_AUDIO

R343

R343
10K

10K

C330

C330
.01u

.01u

2

R344

R344
51R

51R

R114

R114

10K 1%

10K 1%

10K 1%

10K 1%

R115

R115

10K 1%

10K 1%

1

JP3031JP303

22

1

JP3041JP304

22

42TU016

42TU016

R2230RR223

0R

22

R335

R335
750K

750K

VAN_A

200 mVp-p

R319

R319

22K

22K

13

12

R116

R116

VAN_A

1 6

P

S

P

S

2

3 4

T201

T201

R213

R213

4.7K

4.7K

4 WIRE/DUPLEX
OPTION

C3141uC314

1u

TP304TP304

LLG

C3151uC315

1u

C306

C306

.1u

.1u

R347

R347

39K

39K

R3451MR345

1M

R378

R378
100K

100K

-

-

+

+

5

.047u NPO

.047u NPO

R3521KR352

1K

C115

C115

(1206)

R117

R117

33K

33K

14

U103D

U103D

LM660

LM660

R1421KR142

1K

TX NOTCH

NULLING

+15V

12

D203AA6D203A

A6

Q201

Q201
B25

B25

R214

R214
300R

300R

JP3061JP306

R215

R215

300R

300R

JP3051JP305

RX LINE AMP

7

U302B

U302B

LM660

LM660

PTT_DISABLE

KEYPAD_BEEP

C319

C319

.1u

.1u

R3721KR372
1K

Q302

Q302

BSS

BSS

TX NOTCH FILTER TUNING

2000 T0 3100 HZ.

R12951R129

51

3

3

(0805)

(MULTITURN)

TP104TP104

R118

R118

10K 1%

10K 1%

6

-

-

5

+

+

R121

R121

10K 1%

10K 1%

VAN_A

RP102

RP102

5K12

5K12

R119

R119

36K

36K

VAN_A

R1370RR137

0R

R120

R120

10K 1%

10K 1%

3

3

JP2021JP202

1

22

JP2031JP203

22

1

5

3

6

8

10

7

12

1

K201

K201

DF2E-DC12V

DF2E-DC12V

1 6

P

S

P

S

R224*R224

1

*

22

5

2

1

22

3 4

T202

T202

42TU016

42TU016

C316

C316
150p

150p

R337

R337
180K

180K

R338

R338

22K

22K

6

-

-

5

+

+

VAN_A

R342

R342
100K

DURING

SIMPLEX TX

100K

SPK AMP

C321*C321

R349

R349
910K

+15V

C210

C210

10u

10u

910K

9

-

-

R348

R348

62K

62K

1

JP3091JP309

22

R228

R228
100K

100K

R229

R229
100K

100K

RP103

RP103

1K

1K

R130

R130

2.2K

2.2K

R122

R122

10K 1%

10K 1%

U103B

U103B

.047u

.047u

*

2

8

+

+

2

2

LM660

LM660

C317

C317

U201C

U201C
LM4950

LM4950

3/3

SHUTDOWN

BYPASS

1

1

7

9

10

7

D

R125

R125

470

470

(0805)

+15V

R124

R124

10K 1%

10K 1%

2

3

R126

R126

10K 1%

10K 1%

VAN_A

R123

R123
10K 1%

10K 1%

-

-

8

+

+

U103C

U103C
LM660

LM660

C213

C213

.001u 500V

.001u 500V

C214

C214
.001u 500V

.001u 500V

SUPERVISOR/LINE2/
4 WIRE OPTION

C215

C215
.001u 500V

.001u 500V

C216

C216
.001u 500V

.001u 500V

R339

R339

4.7K

4.7K

2

2

R3400RR340

0R

Q303

Q303
BSS

BSS

C322

C322

470u

470u

+

+

+15V

R208

R208
10R

10R

2W

6

VDD

+

+

C208

C208

470u

470u

4

GND

5

GND TAB

U201B

U201B

LM4950

LM4950

2/3

D

C116

C116

.01u NPO

.01u NPO

(0805)

C119

C119

411

.1u

.1u

-

-

1

+

+

U103A

U103A

R1431KR143

LM660

LM660

1K

TP103TP103

R1381KR138
1K

F201

F201

300mA Resettable

300mA Resettable

TZ201

TZ201
P0300

P0300

TZ205

TZ205
P0300

P0300

TZ202

TZ202
P0300

P0300

F202

F202

300mA Resettable

300mA Resettable

TZ203

TZ203
P0300

P0300

TZ206

TZ206
P0300

P0300

TZ204

TZ204
P0300

P0300

C212

C212
.22u

.22u

C218

C218
560p

560p

+15V

1

22

60 mVp-p

RX GAIN

3

3

RP306

RP306

10K

10K

1

1

R341

R341
300R

300R

JP3081JP308

22

1

R328

R328

10K

10K

11.7 Vp-p Full Volume @ -5 dbm

PL301PL301

1

SPEAKER

2

8 Ohm at 2 Watt

MIDIAN ELECTRONICS, INC.

MIDIAN ELECTRONICS, INC.

MIDIAN ELECTRONICS, INC.

NOV. 19, 2004

NOV. 19, 2004

NOV. 19, 2004

DATE

DATE

DATE

DESIGN

CJS

DESIGN

CJS

DESIGN

CJS

R226

R226
100K

100K

R227

R227
10K

10K

JP2071JP207

Q206

Q206
BSS

BSS

+15V

Q205

Q205
Y25

Y25

JP2081JP208

DWN. BY

DWN. BY

DWN. BY

REV.

REV.

REV.

EXT.

33

RELAY

22

PTT

1

M LEAD

C219

C219
560p

560p

AWS

AWS

AWS

07/06/2008

07/06/2008

07/06/2008

SEE

MCU PAGE

TXD2

RXD2

+15V

BLK

RED

GRN

YEL

R216

R216
100R

100R

1

2

3

4

5

6

7

8

JP2061JP206

9

1

22

10

EARTH GROUND POST

EARTH GROUND POST

TRC SERIES

TRC SERIES

TRC SERIES
ANALOG

ANALOG

ANALOG

SIZE

SIZE

SIZE

D

D

D

COPYRIGHT © 2004

COPYRIGHT © 2004

COPYRIGHT © 2004

E

PL1

PL1

RJ-45 10 PIN

RJ-45 10 PIN

J1

J1

1

SCHEMATICAPPR.

SCHEMATICAPPR.

SCHEMATICAPPR.

E

LINE

INTERFACE

REV

FILE NAME

REV

FILE NAME

REV

FILE NAME

G-1

TRC-500

G-1

TRC-500

G-1

TRC-500

DOCUMENT NUMBER

SHEET

DOCUMENT NUMBER

SHEET

DOCUMENT NUMBER

SHEET

of

500-ANLG

2 2

of

500-ANLG

2 2

of

500-ANLG

2 2