Related Manuals for Midian TTC-2
Summary of Contents for Midian TTC-2
- Page 1 TTC-2 F1 & F2 Tone Remote Adaptor – Tone Termination Panel Manual Revision: 2013-06-05 Covers Loader Firmware Revisions: 1.90 & Higher Covers Application Firmware Revisions: 1.80 & Higher Covers PCB Revisions: F & Higher...
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Page 2: Table Of Contents
TABLE OF CONTENTS Specifications General Information Hardware Installation Hardware Alignment Jumper Settings Controls & Indicators Operation Tone Signaling Formats Theory of Operation Technical Notes Contact Information... -
Page 3: Specifications
SPECIFICATIONS Voltage/Current: Operating Voltage: 13-18 VDC Operating Current (standby): 125 mA LED Current: 4 mA Fuse Protection Auto Resettable with surge suppression: 300 mA RX Input from Radio: Frequency Range: 300-3000 Hz Notch Filter Depth: 45 db relative to 1 KHz Dynamic Range 30 dB COR Input... -
Page 4: General Information
Midian’s TTC-2 is a tone remote adaptor (tone termination panel) that supports F1 and F2 function tones. The TTC-2 uses EIA and Industry standards for monitor, guard, and F1-F2 function tones. The standard configuration of the TTC-2 is for a 2-wire system. A 4-wire option (TTC Option J) is available for these types of systems. -
Page 5: Hardware Installation
(Line In) and pins 5 and 6 (red and green) for receive audio from the base station (Line Out). For this feature TTC Option J must be ordered and installed in the TTC-2. JP27 should be moved to the 2-3 position. - Page 6 Radio Interface: CON6 is located in the middle of the back panel and is used to connect the TTC-2 to the base station radio or repeater. The following are the connection points: CON6: CON6-1 (Gray): F2: Connect this lead to the F2 channel selector position on the radio. With JP14 installed in the 1-2 position, the output is an open-collector to ground.
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Page 7: Hardware Alignment
HARDWARE ALIGNMENT 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. TX Input Line Level Adjustment: With the dedicated line connected to the TTC, connect a line level meter to the red and green (2-wire) or yellow and black (4-wire option) in bridging mode. - Page 8 RX Output Line Level Adjustment: With voice being received from the base station adjust RP6 while monitoring the line out with a line level meter and set for approximately -10 dBm on average voice or -5 dBm on peak voice. Duplex Parallel Crossover Adjustment: If the TTC is ordered with the 4-Wire Option it may be necessary or desirable for one tone remote controller to hear another and to pass its keying tone to the other tone remote(s) to activate the busy light.
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Page 9: Jumper Settings
JUMPER SETTINGS The following table shows the default jumper settings and their function: Jumper Default Position Description Number 1-2 Out – 2-3 In PTT open collector transistor output or relay selection 1-2 Out – 2-3 In Active low versus active high selection for PTT Relay 1-2 Out –... -
Page 10: Controls & Indicators
CONTROLS & INDICATORS Power LED: This red LED indicates that power is applied to the unit through the rear connector. Transmit LED: This red LED indicates that the unit is applying push to talk to the base station or repeater. COR/MON LED: This red LED indicates when a monitor output is turning off the CTCSS/DCS and monitoring the standard carrier squelch or that carrier is detected on the base station radio. -
Page 11: Operation
OPERATION Channel Change: Upon receiving a function tone F1-F2 the TTC will give an open collector output to ground to cause the base station radio to change to the desired radio channel. An optional relay for F1/F2 select is available. Transmit: Upon receiving the low-level guard tone the TTC will PTT the radio (CON6-9) by giving an open collector output to ground, causing the base station radio to key. -
Page 12: Tone Signaling Formats
(recommended). It also requires that the guard tone and notch filters on the tone remote controller be changed as well. While Midian’s products allow for this, not all do. Please note that this issue applies to decoding as well. Tone remote controllers notch 2175 Hz out of the receive audio as well. This possibility should be investigated if decode problems are experienced. -
Page 13: Theory Of Operation
THEORY OF OPERATION TX Voice Path: Phone line audio from the tone remote controller is fed into the TX voice path in simplex mode through transformer T1. In 4-wire mode it is fed into transformer T2 and is selected by jumper JP27. Both transformer circuits have surge suppression and an auto-resettable poly-switch for lightning protection. -
Page 14: Technical Notes
TECHNICAL NOTES No technical notes are available at this time. MIDIAN CONTACT INFORMATION MIDIAN ELECTRONICS, INC. 2302 East 22 Street Tucson, Arizona 85713 USA Toll-Free: 1-800-MIDIANS Main: 520-884-7981 E-mail: sales@midians.com Web: www.midians.com... - Page 15 R153 R272 VAN_A VAN_A GUARD/HOLD TONE Approx 3.7Vpp NOTCH NULL * = NOT INSTALLED @-10dbm@1Kc R155 RP8 at center 100K TTC2<2WIRE> MIDIAN ELECTRONICS, INC. DOCUMENT NAME TX_OUTPUT_ENABLE_DISABLE 2005-11-29 DATE: DWN BY: APPR SCHEMATIC SHEET PROJECT NUMBER 7503 2013-05-08 2013 1 of 2...
- Page 16 SEE DOCUMENT 7503-PROGCABLE PROG_IN FOR BOARD REV INFORMATION RXD0 R226 F9 LED 100K PROG_OUT PJ7 68 * = NOT INSTALLED TXD0 R229 TTC2<2WIRE> MIDIAN ELECTRONICS, INC. DOCUMENT NAME R219 F10 LED 2005-11-29 R235 C138 C137 C134 R213 DATE: DWN BY: APPR...
- Page 19 R153 R272 VAN_A VAN_A GUARD/HOLD TONE Approx 3.7Vpp NOTCH NULL * = NOT INSTALLED @-10dbm@1Kc R155 RP8 at center 100K TTC2<4WIRE> MIDIAN ELECTRONICS, INC. DOCUMENT NAME TX_OUTPUT_ENABLE_DISABLE 2005-11-29 DATE: DWN BY: APPR SCHEMATIC SHEET PROJECT NUMBER 7503 2013-05-08 2013 1 of 2...
- Page 20 SEE DOCUMENT 7503-PROGCABLE PROG_IN FOR BOARD REV INFORMATION RXD0 R226 F9 LED 100K PROG_OUT PJ7 68 * = NOT INSTALLED TXD0 R229 TTC2<4WIRE> MIDIAN ELECTRONICS, INC. DOCUMENT NAME R219 F10 LED 2005-11-29 R235 C138 C137 C134 R213 DATE: DWN BY: APPR...
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