Model 250 Tone Remote Adapter Installation Manual 025-9472D
Software License The Zetron software described in this manual is subject to the terms and conditions of Zetron’s Software License Agreement, a copy of which is contained on the product distribution media or otherwise provided or presented to buyer. Installation and/or use of the Zetron software constitutes acceptance of Zetron’s Software License Agreement.
Compliance Statements This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Change List for Rev D, 18 Feb 2010 4 • Updated document formatting to current template • Added a reference to the kit (905-0347) offered by Zetron containing both a Model 250 and a Model 251, see page 8 025-9472D
Contents Contents Introduction .......................................................................................................7 Overview ................................................................................................................................ 7 Features................................................................................................................................. 8 Specifications................................................................................
Model 250 Tone Remote Adapter Index................................................................................................................
Overview Introduction Overview The Model 250 Tone Remote Adapter provides a means of connecting a base station radio to industry standard tone remote encoders, such as Zetron’s 260 and 280 desk sets or series 4000 communications consoles. The adapter connects to an audio circuit or leased line from the tone remote(s) and to the unique interface of the base station radio. The base station can range from a simple, low-cost mobile radio to a rugged, high-power, continuous-duty station.
Introduction The programmable settings for the Model 250 include 14 pre-set configurations that cover most of the potential applications for the unit. This can significantly reduce the time required to install the unit. Built-in installation aids ensure accurate and reliable setup with the minimum of test equipment. The necessary audio level adjustments are quick and easy. Detachable connectors make cabling an easy job, and pre-wired cables are available for several models of popular radios.
Specifications Specifications General Parameter Description Power 10.5 Vdc to 16 Vdc, at 500 mA, unregulated supply Operating Temperature -30º to +70º Celsius, 95% relative humidity at +50º (noncondensing) Indicators Power, and Status Adjustments RX audio, TX audio, Line TX Configuration/Setup Accomplished using front panel switches Dimensions 8.25" (210 mm) x 5.25" (133 mm)x 1.25" (32 mm) (L x W x H) Weight 1.4 pounds (0.
Introduction Parameter Description Function Tone Frequencies 15 available, 650 Hz to 2050 Hz in 100 Hz steps Audio Filtering Guard tone notch and hi-pass filters in both directions (line-to-TX and RX-to-line) Serial Port Parameter Description Connector Modular, 6-pin, off-set keyed Interface Adapter Converts standard RS-232 levels to TTL levels, presents a DB-25 connector towards the PC, and an RJ-11 towards the Model 250 Please Note The serial port on the front of the Model 250 is provided to
Getting Started Installation Caution! This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with this manual and commonly used radio practices, it may cause interference to radio communications. The installation of the Zetron Model 250 Tone Remote Adapter should be accomplished by personnel with experience in radio and tone remote systems.
Installation Tools and Equipment The following list covers the necessary and desirable tools and equipment for performing a Model 250 installation. Ready-made cables for interfacing the unit to a radio may be purchased from Zetron. • Standard electrical and electronic hand tools. This includes a variety of screw drivers and alignment tools. If you have not yet made up the interface cable (or purchased one from Zetron), it also includes a crimping tool.
Table 1: Model 250 Operating Mode Selections Mode 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Description 1 Freq Monitor PL strip 6 Wildcard 1 Freq Monitor PL strip 4 PL 2 Wild Line CK 2 Freq Monitor 6 Wild 2 Freq Monitor 4 PL 2 Wild Line CK 4 Freq (1 of 4) Monitor 3 Wild Line CK 7 Freq (1 of 7) Monitor Line CK 8 Freq (binary) Monitor 4 PL 8 Freq (binary) Monitor 3 Wild 12 Freq (binary) Monitor 1 Wild 14 Freq (binary) Monitor 15 Freq (binary) 1 Freq Monitor Latch 8 Freq (binary) Monitor 2 W
Installation Hardware Interface The hardware interfacing of the Model 250 can be separated into two parts; the connection to the wire line and the connection to the radio base station. Wire Line Refer to Table 2 for information specific to the line type provided between the Model 250 and the tone remotes or console that control the base station. 1.
Hardware Interface but it should be of “fixed level” (not affected by the setting of an external volume control). Connect this source to P1-pin 3. 3. Receive Carrier Detect: If unsquelched discriminator audio is used for the receive audio in step 2, then a carrier detect signal (or speaker mute signal) must be connected to P2 pin 8 (I/O 6). This signal must drop to less than 0.8 Vdc in its low state and rise to greater than 2.0 Vdc when in its high state.
Installation equipment at the radio site. The outputs I/O 1 through I/O 6 are open-drain FET circuits (inactive outputs are open, active outputs are pulled to ground). I/O 7 and I/O 8 are relays (see Figure 2). Which outputs are available and how they operate is determined by which operating mode the Model 250 is configured for and the settings of front panel switches 6, 7, and 8. Connect the appropriate I/O pins to the equipment they control (see Figure 1) and set the switches as necessary per Table 4.
Hardware Interface Figure 3: Minimum Connections for a Generic Interface Model 250 Base Station/Repeater P1 +12 VDC Input 1 +12 VDC Station Supply Ground 2 Ground RX Audio 3 I/O 5 4 TX Audio 5 I/O 4 6 RX Audio Programmable Function TX Audio Programmable Function PTT PTT 7 I/O 3 8 Programmable Function I/O 2 9 Programmable Function I/O 1 10 Programmable Function I/O 8 NC 1 I/O 8 COM 2 I/O 8 NO 3 Ground/Sub Out 4 I/O 7 COM 5 I/O 7 NO/NC 6 Ground 7 I/O 6 / Carrier In
Installation Jumper JP8 Functional Description This jumper sets the RX line impedance when a 4-wire interface is used between the remote or console and the Model 250. Default = In, JP9 For future use. JP10 For future use. [In = 600 Ω, Out = High Z ] Adjustments Basic Adjustments Warning! To prevent damage to the base station and/or Model 250, make sure the front panel configuration switches have been set prior to supplying power to the unit! ♦ To make the basic adjustments: 1.
Adjustments 5. Monitor the wire line LINE-RX pair (modular jack pins 3&4) using an AC voltmeter. Be sure all remote controllers and/or consoles are connected before making any adjustments. The LINE LEVEL adjustment is typically set for 0.775 Vrms or 0 dBm. Receive levels at the console or remote control units may be adjusted if needed. 6. Move switch 8 to the Up position (↑↑↑↑↓↓↓↑xx).
Installation Table 7: Alternate Guard Tones Available in the Model 250 Guard Tone Frequency Configuration Switch Setting 2100 Hz ↑↑↑↑↑↓↓↓XX 2175 Hz ↑↑↑↑↑↓↓↑XX 2300 Hz ↑↑↑↑↑↓↑↓XX 2323 Hz ↑↑↑↑↑↓↑↑XX 2600 Hz ↑↑↑↑↑↑↓↓XX 2800 Hz ↑↑↑↑↑↑↓↑XX 2970 Hz ↑↑↑↑↑↑↑↓XX An Example Installation What follows is an example of interfacing the Model 250. It is hoped that this example will help the installer in developing a firm grasp of the more general information provided earlier in this section of the manual.
An Example Installation Figure 4: Generic Connections for Operating Mode 9 Model 250 Base Station/Repeater P1 +12 VDC Input 1 +12 VDC Station Supply Ground 2 Ground RX Audio 3 RX Audio I/O 5 4 Monitor TX Audio 5 TX Audio I/O 4 6 Binary Channel Select 4 (MSB) PTT 7 PTT I/O 3 8 Binary Channel Select I/O 2 9 Binary Channel Select Binary Channel Select 4 (LSB) I/O 1 10 P2 I/O 8 NC 1 I/O 8 COM 2 I/O 8 NO 3 Ground/Sub Out 4 I/O 7 COM 5 I/O 7 NO/NC 6 Ground 7 I/O 6 / Ca
Installation Radio Specific Application Notes Zetron has prepared several radio-specific applications notes for interfacing the Model 250 to popular radio equipment. Table 9 lists the applications notes and the ready-made cables available to use with each of them.
Operating Modes Operation This section concerns itself with explaining the “how” and “why” of normal operation for the Model 250 Tone Remote Adapter. Operating Modes The Tone Remote Adapter allows the dispatcher to control various functions of the radio, which typically include transmit/receive, channel selection, monitor, and other control functions depending on the application.
Operation monitor is required, the number of wildcard functions, and whether or not the LineCheck function is desirable. Table 10 and Table 11 describe each operating mode. This includes the tone remote function tones, the action taken in response to each function tone, and what each of the output signals does. Table 12 describes the various functions and capabilities referenced in the previous two tables.
Operating Modes Table 11: Model 250 Operating Modes 7 to 13 Mode Î 7 8 9 10 11 12 13 Switches 1-4 Ö ÈÇÇÇ ÇÈÈÈ ÇÈÈÇ ÇÈÇÈ ÇÈÇÇ ÇÇÈÈ ÇÇÈÇ 2050 Hz Monitor Monitor Monitor F15 Monitor Monitor Monitor 1950 Hz F1 F1 F1 F1 F1 F1 F1 1850 Hz F2 F2 F2 F2 - F2 F2 1750 Hz F7 F3 F3 F3 - F7 F3 1650 Hz F8 F4 F4 F4 - F8 F4 1550 Hz I/O 8 on F5 F5 F5 - I/O 8 on F5 1450 Hz I/O 8 off F6 F6 F6 - I/O 8 off F6 1350 Hz F3 F7 F7 F7 I/O 1 on F3 F7 1250 H
Operation Function Descriptions The descriptions provided in Table 12 will help you to understand both the general operation of the Model 250 and the operating mode descriptions provided in Table 10 and Table 11. Table 12: Model 250 Operating Functions Function Description F1 - F7 (one-of-n) The I/O lines assigned an “Fn” designation are used as individual frequency select outputs. Only one will be active at a time.
Front Panel “STATUS” LED Indications Function Description PL1, PL2, PL3, PL4 The PL select outputs are typically used to control the CTCSS/DCS function of the radio receiver and/or transmitter. The (active low) outputs are interlocked such that one (and only one) is active at any given time. I/O X on, I/O X off General purpose output control lines are often referred to as “wild cards”, and can be set or cleared by the dispatcher.
Operation Indication Function Description Blinking red Device failure Blinking amber (500ms on, 500ms off) Invalid mode select (configuration error, check switch settings) Alternating red-green Guard tone frequency selection complete Front Panel Switch Settings Table 14 provides a quick summary of the functions that can be accessed from the front panel switch. This includes both the preset operating modes and the test modes provided to aid the technician during setup.
Front Panel Switch Settings Table 14: Model 250 Front Panel Switch Settings Switch Setting Function/Mode 1234---------5---------6---------7---------8---------9---------0 Mode Selection Rx de-emphasis I/O 6 action I/O 7 action I/O 8 action Line type 4-Wire Duplex — ↓↓↓↓XXXXXX ↓↓↓↑XXXXXX ↓↓↑↓XXXXXX ↓↓↑↑XXXXXX ↓↑↓↓XXXXXX ↓↑↓↑XXXXXX ↓↑↑↓XXXXXX Mode 0 Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 ↓↑↑↑XXXXXX ↑↓↓↓XXXXXX ↑↓↓↑XXXXXX ↑↓↑↓XXXXXX ↑↓↑↑XXXXXX ↑↑↓↓XXXXXX ↑↑↓↑XXXXXX Mode 7 Mode 8 Mode 9 Mode 10 Mode 11
Operation 30 025-9472D
Problems and Answers Troubleshooting Problems and Answers Table 15 contains several potential problems you might encounter with a tone remote system using the Model 250 and provides suggested actions for taking care of each problem. Table 15: Trouble Shooting Problems & Answers Problems Answers The Model 250 does not seem to respond to any TRC function tones sent to it. Make sure that the Status LED on the Model 250 winks with the receipt of every TRC command.
Troubleshooting 32 025-9472D
Index Index A I adjustments, 18 application notes by radio model, 22 impedance 4-wire line, 18 installation phases, 11 interface diagrams generic, 17 operating mode 9, 21 interfacing basestation, 14 control I/O, 16 introduction, 7 B basestation interfacing, 14 C carrier detect settings, 15 configurable items specifications, 10 control I/O circuits, 16 interfacing, 16 control outputs typical uses, 7 E examples, 20 F J jumpers JP1, 18 JP6 and JP7, 15 JP8, 14 table of, 17 L features, 8 functions, 2
Index O operating modes described, 23 functions described, 26 selection described, 12 summary table, 13 outputs circuits, 16 interfacing, 16 overview, 7 P phases of installation, 11 problems and answers, 31 PTT output select, 17 R radio interface specifications, 9 radio specific application notes, 22 S serial port specifications, 10 specifications configurable items, 10 general, 9 line interface, 9 radio interface, 9 serial port, 10 status LED normal operation, 27 test mode, 19 switch settings, 28 T t
