Codan Telex IP-224, MT-4 Technical Notes

TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

The Telex IP-224 Ethernet Adapter provides a reliable means of remotely controlling up to two Codan base stations
remotely. The adapter can be used in conjunction with Telex model C-6200, C-Soft, IP-1616 and IP-2002 consoles.
The IP-223 is interconnected to the distant remote control console(s) by means of any available Wide Area Network
(WAN) or Local Area Network (LAN) connection.

The IP-224 can be confi gured to operate in modes that allow it to connect to both digital and analog radios, and
perform a variety of other tasks related to using radios on a digital network. The IP-224 can be rack mounted
providing easy installation and service. A sleek LCD display provides user feedback when programming and VU
meters are provided on the front of the display for alignment purposes. All other confi gurations are completed in the
web browser confi guration windows.

The Telex IP-224 Ethernet Adapter provides the following features:

Ethernet TX and LINK LEDs
PTT (Push To Talk) Monitor, F1 and F2 relays
Four (4) PTT Modes and Three (3) Monitor Modes
Nine (9) Selectable PTT Frequencies
Seven (7) Digital Outputs for Channel Selection
CTCSS (Continuous Tone Coded Squelch System) Generation(64 frequencies)
Software Gain Control
Direct Radio Control
Handset Port for Monitoring Activity and Transmission
Single Function Tone Recognition (16 Function Tones)
AGC (Automatic Gain Control)
RX (Receive) Audio Squelch
ANI (Automatic Number Identifi cation) Over-the-Air Protocol
Up to 1000 function tones supported
MDC1 and FleetSync1 Encode/Decode
SOIP (Serial Over Internet Protocol)
Dual Ethernet Interface for Backup Solution
Supports RS485, CAN Bus, RS232 and TTL
Backwards Compatible with Telex Radio Dispatch Products
Secure Remote Web Browser Programming and Confi guration
Single or Dual Function Tone Generation
Guard Tone User-Selectable for 2100Hz, 2175Hz, 2300Hz, 2325Hz,2400Hz, 2600Hz, 2800Hz, 2850Hz or 2900 Hz
Menu Driven Front Panel Control for TX, RX, Spare Audio, and CTCSS

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TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

Installation:

The A-PNL-AUX96-3 auxiliary connector can be used to connect the Telex IP-224 to a Codan Base Station with an
AC-3E or CI-BC-4E, as shown in Figure 1. Ensure jumpers JU67A (or JU67X for CI-BC-4E) and JU68 are installed
on the AC-3E and CI-BC-4E. On Codan MT-4 modules the CTCSS to Subtone connection is not required (CTCSS
is generated internally by the transmitter).

P1 (A-PNL-AUX96-3 CONTROL CONNECTOR)

CODAN RADIO EQUIPMENT

TXA SECURE / CLEAR (OPTIONAL)

RX A COR

(GPIO 5) AUX 1 AUDIO O/P1

(GPIO 6) AUX 1 AUDIO O/P2

(GPIO 1) AUX 1 AUDIO I/P1

(GPIO 2) AUX 1 AUDIO I/P2

(GPIO 14) AUX 1 PTT K PTT NO

RXA SQUELCH OVERRIDE MONITOR NO

TXA SUBTONE I/P

TXA CSEL D0
TXA CSEL D1

TXA CSEL D2
TXA CSEL D3

GROUND

GROUND

GROUND

GROUND

(CONNECTOR J8) +13.8V

GND

Jumpers Required For TXA Channel Select:
SR-39-1: JU50A, JU51A, JU52A, JU53A, Remove JU48
On older motherboards (Serial # 123125 and earlier)
the jumpers were as follows:
SR-39-1: JU24B, JU25B, JU26B, JU27B, Remove JU41

(J5-5)

C24

B8

(J1-7)

(J3-5)

B11

(J3-6)

A11

(J3-1)

C19

C20

(J3-2)

(J3-14)

C13

(J4-9)

C10

(J1-4)

C22

(J2-1)

C21

(J2-2)

B21
A21 (J2-3)

(J2-4)

C23

A32, B32

A32, B32

A32, B32

A32, B32

(J4-1)

(J4-2)

(J4-3)

(J4-4)

TELEX IP-224

ETHERNET REMOTE ADAPTER

F1 NO

COR (DIG 6)

RX+

RX-

TX+

TX-

CTCSS

DIG0
DIG1

DIG2

DIG3

GND

PTT COM

F1 COM

MON COM

+12V

GND

Figure 1: Codan Radio System to Telex IP-224 connection

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TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

A female DB25 connector on the back of the subrack (J10) can also be used for basic base connections to a Telex
IP-224, using a straight-through male DB25 to male DC37 cable as follows:

CBLC40-DB0DC061 Interconnect cable, CI-IP-ADAPTER-1 (DB25 to DC37)

WARNING: JU108 must be confi gured correctly or damage can occur. JU108 B for Rx A COR / IP-224, as
shown in Figure 2.

B

A

JU104

B

A

JU105

B

A

JU106

B

A

JU107

B

A

JU108

1923

111518

145610

Figure 2: Jumper positions for DB25 connector

On Subracks with a Serial Number less than 279213, it is required that 2 pins on the DB25 (PTT COM - pin 2 and
MON COM - pin 16) are wired to ground for proper operation. Pins can be soldered to to ground at the bottom
right of the circuit board on Control Module J1, pins D32 and Z32. On Subracks with a Serial Number greater than
279213, the two pins are connected to ground internally and are not available as a solder point on the circuit board.
No wiring is necessary.

OLDER SUBRACK

Serial Number less than 279213

18

1923

Pins 2 and 16 are soldered to ground Pins 2 and 16 are internally soldered to ground

1115

16

Figure 3: DB25 connector ground pins

Serial Number greater than 279213

1245610

NEWER SUBRACK

1923

and are not available on the circuit board

111518

45610

1

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TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

Telex IP Alignment / Tuning Procedures:

TELEX

MENU

IP-224



RADIO 1 RADIO 2

+12V GND

EGND

POWER PRIM SECOND

Figure 4: IP-224 Front and Back Panel

HANDSET

ETHERNET

USB

IC

TX LINK

ACCESORY



RADIO 1

RADIO 2

Initial Setup

Step 1 - Program the Telex IP-224 for your system. Codan makes the following changes from default:

- Ethernet Setup: IP Address, Subnet Mask and Default Gateway

- Multicast Setup: Set RX Mcast, TX Mcast and Mcast address at 224.0.0.13

- Per Line Setup: CTCSS Setup Always On, Digital Outputs set from 0 up, COR Enable, Hi-Pass RX, and PTT
Notch Filter selected, Monitor Relay set to Timed 1000 ms.

AC-3E Audio Control Card and CI-BC-4E Base Control Card Tuning

Step 2 - Disconnect the Telex from the Codan radio system.
Step 3 - Apply a 1.0 KHz tone @ 0 dBm (775 mV) to the GPIO 1 (Aux1 I/P 1) and GPIO 2 (Aux1 I/P 2) balanced

auxiliary audio input on the Codan radio system.

Step 4 - Adjust R120 (Aux In 1 to TXA) for a transmitter deviation of ± 3 KHz (WB), ± 1.5 KHz (NB).
Step 5 - Inject a 1.0 KHz tone @ a deviation of ± 3 KHz (WB), ± 1.5 KHz (NB) into Receiver A.
Step 6 - Adjust R13 (RXA to Aux Out 1) for an audio level of 0 dBm (775 mV @ 600 ohms) across GPIO 5 (Aux 1

O/P 1) and GPIO 6 (Aux 1 O/P 2) on the Codan radio system. Note: MT-4R and MT-4D P25 Receiver modules
have a higher audio level output when receiving a digital signal (as opposed to analog). When using these receiver
modules in digital mode, adjust R13 for an audio level of -8.0 dBm (308 mV @ 600 ohms).

Step 7 - Connect the Telex to the Codan radio system.

Telex Line and Radio Level Tuning

Step 8 - Inject a 1.0 KHz tone @ a deviation of ± 3 KHz (WB), ± 1.5 KHz (NB) into Receiver A.
Step 9 - On the front of the Telex, go to Gain Adjustments - RX Inputs and adjust Line #1 (dB) until VU reads +0dB.
Step 10 - On the front of the Telex, go to Gain Adjustments - TX Outputs and select Tone as well as PTT. This will

key the Transmitter

Step 11 - Adjust Line #1 (dB) for a transmitter deviation of ± 3 KHz (WB), ± 1.5 KHz (NB).
Step 12 - Ensure the transmitter is de-keyed by unselecting the Tone and PTT.
Step 13 - On the front of the Telex, go to System Utilities - Reboot IP-224 and reboot the IP-224.
Step 14 - Connect a console and test the connection.

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TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

Bypassing the AC-3E Audio Control Card and CI-BC-4E Base Control Card:

The AC-3E Audio Control Card and CI-BC-4E Base Control Card can be bypassed and the MT-4E Receiver
and Transmitter can be connected directly to the Telex adapter. The control card needs to be removed from the
subrack, or unwanted loading could occur.

The following receiver and transmitter tuning changes would be required:

Transmitter Setup - Apply a 1.0 KHz tone @ 0 dBm (775 mV) to the Tx A Bal I/P1 (J1-1) and Tx A Bal I/P 2 (J1-2)

balanced audio input and adjust the RSS software Balanced Audio Deviation Level for a transmitter deviation of ±
3 KHz (WB), ± 1.5 KHz (NB).

Receiver Setup - Inject a 1.0 KHz tone @ a deviation of ± 3 KHz (WB), ± 1.5 KHz (NB) into the receiver and
adjust the RSS software Balanced Output Audio Level for an audio level of 0 dBm (775 mV @ 600 ohms) across
Rx A Bal O/P 1 (J1-5) and Rx A Bal O/P 2 (J1-6).

The DB25 (J10) can be jumpered for Balanced Audio direct to / from the receiver and transmitter as follows:

WARNING: JU108 must be confi gured correctly for IP-224 or damage can occur.

JU104 A = RX A Bal O/P2 JU107 A = RX A Bal O/P1
JU105 A = TX A Bal I/P2 JU108 B = IP-223 & IP-224 / RX A COR
JU106 A = TX A Bal I/P1

On the Wiring diagram for the A-PNLAUX96-3, the following connections change:

(GPIO 5) AUX 1 AUDIO O/P1(J3-5) changes to: Rx A Bal O/P 1 (J1-5)
(GPIO 6) AUX 1 AUDIO O/P2 (J3-6) changes to: Rx A Bal O/P 2 (J1-6)
(GPIO 1) AUX 1 AUDIO I/P1 (J3-1) changes to: Tx A Bal I/P1 (J1-1)
(GPIO 2) AUX 1 AUDIO I/P2 (J3-2) changes to: Tx A Bal I/P 2 (J1-2)
(GPIO 14) AUX 1 PTT K (J3-14) changes to: Tx A PTT (J1-3)

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TECHNICAL NOTES

MT-4 Radio Systems

TN857 CI-IP-ADAPTER-1 Telex IP-224 Ethernet Adapter

DB25 Connector (J10) Schematic

Figure 5: DB25 Connector Schematic Diagram

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