T-96H Radio Modem Technical Manual version 0.01 PRELIMINARY The entire contents of this manual and the Radio Service Software described in this manual are copyright 1998 by DATARADIO Inc. Copyright DATARADIO Inc. August 1998 part no.
Table of Contents 1. PRODUCT OVERVIEW................................................................................................................................... 1 1.1 INTENDED AUDIENCE ....................................................................................................................................... 1 1.2 INTRODUCTION ................................................................................................................................................. 1 1.
4.2 4.3 4.4 4.5 4.6 5. TRANSMIT DATA ....................................................................................................................................... 14 RECEIVE DATA........................................................................................................................................... 15 SYNTHESIZER PROGRAMMING.............................................................................................................. 15 POWER SUPPLIES ............................
What's New in Version 0.01 • First version of the T-96H technical manual based on the latest T96S technical manual ver 2.01. History Version 0.01: • Preliminary version.
Definitions The following terms are used throughout this document. Item Bit dribble DCE DTE HDX OFLNDIAG ONDMON PLC RS-232 RSS RTS RTU SCADA Simplex Transparent T-96S DL-3276 T-96H Definition Extraneous bits delivered at the end of a data transmission. Equivalent to a “squelch tail” in voice systems. Data Communications Equipment. This designation defines the direction (input or output) of the various RS-232C interface signals. Modems are always wired as DCE. See also DTE. Data Terminal Equipment.
1. PRODUCT OVERVIEW 1.4 This document provides the information required for the selection, installation, operation and maintenance of the DATARADIO T-96H radiomodem. 1.1 The T-96H consists of a logic PCB (which includes the modem circuitry) and a separate radio module. The two boards plug directly together and slide into the rails of an extruded aluminum case. The front panel includes the DE-15 data connector and a SMA antenna connector, as well as three LED indicators.
1.6 Customer Service Department 299 Johnson Avenue, P.O. Box 1733 Waseca, MN 56093-0833 Catalog Numbers A T-96H may be identified from its catalog number. Technical support hours: Monday to Friday 9:00 AM to 5:00 PM, Central Time,. CATALOG NUMBERS Format is TH[radio][band][channel spacing]0 radio 22 phone: 800 992-7774 and +1 507 835-6911 fax: 507 835-6969 Email address: support@johnsondata.com VHF UHF 12 900 92 1.
Short ID: This value is the low order 10 bits of the ID Number. It is used to identify online diagnostics only. It may not be modified directly using the T96HRSS; it is always derived from the ID Number. All units within a network should have unique Short ID numbers to avoid ambiguity in Online Diagnostics reports. 1.10 Diagnostics and Remote Commands Diagnostics and remote commands are processed using the T96H Offline Diagnostics software (OFLNDIAG).
1.10.3 Offline Diagnostics 1.10.4 Remote Commands Offline diagnostics are statistics returned in response to a specific request to a particular station. The use of this feature requires that network operation temporarily be suspended. The following commands may be sent remotely (using the OFLNDIAG). • Begin test transmission (several types available). • Get statistics (diagnostics). • Sample network statistics (monitoring online diagnostics). • Get parameters (configuration) from remote unit.
1.11.2 Network Using T-Base T96H PC for online diagnostics PLC Master PLC T-Base T96H PLC Figure 2 - Network Using T-Base This configuration has the following characteristics: • Master station may be full duplex (duplexer required), half duplex or simplex. • Online diagnostics are available using the Online Diagnostics Monitor program (ONDMON) without disrupting network activity. • Remote and local diagnostics, statistics and control are available using the T96H OFLNDIAG.
1.11.4 Network Using T-96H for Online Diagnostics T96H PC for online diagnostics PLC T96H T96H Master PLC PLC T96H Figure 4 - Network with Monitoring Site This configuration has the following characteristics: • Master station may be half duplex or simplex. • Accumulated online diagnostics for a maximum of 15 stations are available at a monitoring site (monitoring site must be in range of all remotes). • Online diagnostics are available in real time at the monitoring site.
2. Features and Operation 1.1 Overview 2.3 DTE Port Interface This chapter outlines the physical features, connections and theory of operation of the T-96H. 2.3.1 RS-232 Inteface Signal Levels 2.1 In the descriptions of data signals, the following conventions are used: Intended Audience This chapter is intended for use by engineering design, installation, and maintenance personnel. 2.
2.3.2 Interface Port 2.3.3 Interface Signal Description The T-96H signals are defined as DCE. Connection to user DTE is made via a DE15 female connector. This connection meets the DATARADIO Interoperability Standard (DIOS). B+ power (input). 10 - 16 VDC (13.3V nominal), maximum 2 A. RX Data. Received data from T-96H to DTE. TX Data. Transmit data from DTE to T-96H. CTS. Clear to Send. Asserted when the T-96H is ready to accept TX Data. RTS. Request to Send.
2.4 Channel Selection 1. By setting the channel on the internal DIP switch. CS0 to CS2 on the interface connector must be left disconnected. SW1 2. By strapping connections on the interface connector. There is a 10KΩ pull up resistor on each line (CS0 to CS2). The DIP switch channel settings must be all OFF. Figure 6 - DIP switch location Channel frequencies for 8 channels are selected using the T96HRSS. Once selected, the current operating channel may be selected in one of three ways: 3.
3. In the idle mode, i.e. no transmission or reception, RX Data will be held in the idle (i.e. “marking”) condition. 4. When a valid radio data signal is received, DCD will be asserted and data will be delivered. 5. When the radio carrier is dropped, the T-96H will clamp RX Data idle (marking) again and drop DCD. At 19200 b/s a few extraneous bits may be delivered after the carrier is dropped (sometimes called “bit dribble”). User software should take this possibility into account. 2.5.
3.4 3. Adjustments and Maintenance 1.1 3.4.1 Preliminary Verification Before performing any adjustments, verify the performance of the unit as shown in the Table 5 for full channel units in the Table 6 for half channel units. Overview This chapter outlines the basic adjustment procedures required upon initial installation and thereafter at prescribed maintenance intervals. Units are delivered from the factory properly aligned and tested on the frequencies specified at time of order.
Table 5: Tests and Adjustments full channel units (25 KHz & 30 Khz models) STEP 1 ACTION EXPECTED RESULTS at 25°°C Output Power 5 watts 1 Press PTT Channel x +10%, -20% MEASURE WITH IF NOT? Service monitor set to read power Check T96HRSS maximum power output setting: must be set to 255 (means 5W) Refer to factory tech support. 2 Frequency Error ±300 Hz Press PTT Channel x 3 Deviation ±4.
Table 6: Tests and Adjustments half channel units (12.5 kHz & 15 Khz models) STEP 1 ACTION EXPECTED RESULTS at 25°°C Output Power 5 watts 1 Press PTT Channel x +10%, -20% MEASURE WITH IF NOT? Service monitor set to read power Check T96RSS maximum power output setting: must be set to 255 (means 5W) Refer to factory tech support. 2 Frequency Error ±300 Hz Press PTT Channel x 3 Deviation ±3.
3.4.4 Opening the Unit 4. Loader/Modem Board Circuit Description 1. Remove the two retaining nuts from the data I/O connector, and the nut and washer from the antenna connector. 4.1 The Loader/Modem board, Part No. 03280-xxx, is a plug-in circuit board. The four main functions of the Loader/Modem board include, loading the radio synthesizer, providing the baseband modulating signal for the transmitter and demodulating receive audio signals.
(U12), operates in DRCMSK1 mode at 4800, 9600 and 19200 bits/sec. It incorporates a 7-bit hardware scrambler and uses Differential (NRZI) encoding in DRCMSK mode to minimize data pattern-sensitivity. Electronic potentiometer U9B (E-Pot), controlled by CPU U5, is used to set the transmitter deviation by amplitude adjustment of the baseband signal. verter U2, the filter cut-off frequency, the serial port handshake lines, and the LED indicators via Q1-3. 4.3 4.
Y1 RESET RAM ROM E-Pot U9A U8A U6 U2 TXA Slicer Level CPLD Modem SYNC-ASYNC CONVERTER U5 RADIO MODULE RXA U8C Controlled by CPU' TX_EN Line U8B RXS Logic Gates U12 E-Pot U9B U7C,D,B PEAK DETECT W.DOG U7A I/O DIGITAL U8D U10B TXA MODEM SIO 2 U1 DE15 DRIVER RXD CTS DCD DTR TXD RTS SIO 1 RCVR U10C U10D RSSI RS232 CTC CONTROL BUS SYNTHESIZER DIAGNOSTICS A/D CPU U3 TEMPERATURE VOLTAGES LEDS DIP SWITCHES U13, U14,F1 5.0V 13.
5. Specifications GENERAL Frequency Channel spacing Operating temperature Supply voltage RX Current at 13.3 VDC TX Current at 13.3 VDC RX/TX bandwidth VHF 132 - 174 MHz 15 or 30 kHz 120 mA 1.6 A UHF 900 MHz 403 - 512 MHz 928 - 960 MHz 12.5 or 25 kHz 12.5 or 25 kHz -30°C to +60°C 10 - 16 VDC (applied through the interface connector) 125 mA 135 mA 1.8 A 2.3 A 18 MHz (132 - 150) 24 MHz (150 - 174) 16 MHz except 20 MHz (450 - 470) 2.25” (H) x 3.25” (W) x 4.
MODEM OPERATION Interface Operation Data rates Modulation type RTS/CTS delay (Online diagnostics OFF) Bit error rate Protocol EIA RS-232C Simplex/half duplex 4800 b/s DRCMSK 9600 b/s DRCMSK 19200 b/s DRCMSK 30 ms -6 better than 1 x 10 at 1.
INDEX H A addressing adjustments equipment required location of controls maintenance intervals 3 11 11 14 11 half channel units I ID number LED indicators 10 networks 9 4 10 1 operation performance verification 3 4 3, 6 RS-232 signal description RS-232 signal levels RTS/CTS timing 10 10 8 7 10 S specifications 17 T 12 T-Base 120 10503-201 11 R F full channel units 9 P E extended delay extended turnoff 4 O D diagnostics offline online 7 N C channel selection commands compatibility
