Campbell RTMS SYSTEMS Instruction Manual Download Page 30 | Manualshive

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APPENDIX A. SETTING THE STATION ID

A-2

SWITCHES

SWITCHES

SWITCHES

ID

1234

56789

ID

1234

56789

ID

1234

56789

41

1001

0100X

84

0010

1010X

127

1111

1110X

42

0101

0100X

85

1010

1010X

128

0000

0001X

129

1000

0001X

172

0011

0101X

215

1110

1011X

130

0100

0001X

173

1011

0101X

216

0001

1011X

131

1100

0001X

174

0111

0101X

217

1001

1011X

132

0010

0001X

175

1111

0101X

218

0101

1011X

133

1010

0001X

176

0000

1101X

219

1101

1011X

134

0110

0001X

177

1000

1101X

220

0011

1011X

135

1110

0001X

178

0100

1101X

221

1011

1011X

136

0001

0001X

179

1100

1101X

222

0111

1011X

137

1001

0001X

180

0010

1101X

223

1111

1011X

138

0101

0001X

181

1010

1101X

224

0000

0111X

139

1101

0001X

182

0110

1101X

225

1000

0111X

140

0011

0001X

183

1110

1101X

226

0100

0111X

141

1011

0001X

184

0001

1101X

227

1100

0111X

142

0111

0001X

185

1001

1101X

228

0010

0111X

143

1111

0001X

186

0101

1101X

229

1010

0111X

144

0000

1001X

187

1101

1101X

230

0110

0111X

145

1000

1001X

188

0011

1101X

231

1110

0111X

146

0100

1001X

189

1011

1101X

232

0001

0111X

147

1100

1001X

190

0111

1101X

233

1001

0111X

148

0010

1001X

191

1111

1101X

234

0101

0111X

149

1010

1001X

192

0000

0011X

235

1101

0111X

150

0110

1001X

193

1000

0011X

236

0011

0111X

151

1110

1001X

194

0100

0011X

237

1011

0111X

152

0001

1001X

195

1100

0011X

238

0111

0111X

153

1001

1001X

196

0010

0011X

239

1111

0111X

154

0101

1001X

197

1010

0011X

240

0000

1111X

155

1101

1001X

198

0110

0011X

241

1000

1111X

156

0011

1001X

199

1110

0011X

242

0100

1111X

157

1011

1001X

200

0001

0011X

243

1100

1111X

158

0111

1001X

201

1001

0011X

244

0010

1111X

159

1111

1001X

202

0101

0011X

245

1010

1111X

160

0000

0101X

203

1101

0011X

246

0110

1111X

161

1000

0101X

204

0011

0011X

247

1110

1111X

162

0100

0101X

205

1011

0011X

248

0001

1111X

163

1100

0101X

206

0111

0011X

249

1001

1111X

164

0010

0101X

207

1111

0011X

250

0101

1111X

165

1010

0101X

208

0000

1011X

251

1101

1111X

166

0110

0101X

209

1000

1011X

252

0011

1111X

167

1110

0101X

210

0100

1011X

253

1011

1111X

168

0001

0101X

211

1100

1011X

254

0111

1111X

169

1001

0101X

212

0010

1011X

255

1111

1111X

170

0101

0101X

213

1010

1011X

171

1101

0101X

214

0110

1011X

«
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Summary of Contents for RTMS SYSTEMS

Page 1: ...RF FOR RTMS SYSTEMS INSTRUCTION MANUAL REVISION 3 95 COPYRIGHT c 1995 CAMPBELL SCIENTIFIC INC...

Page 2: ...ntability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential damages Products may not be returned without prior authorization To...

Page 3: ...ttempts 2 3 2 6 Adding Stations to the Net Description 2 4 2 7 Radio Test Results 2 4 SECTION 3 RADIOTELEMETRY NETWORK COMPONENTS 3 1 The RF95T Modem 3 1 3 2 RF100 RF200 Radios 3 4 3 3 Antennas and Ca...

Page 4: ...rams and displaying current readings from the datalogger The requirements specific to a radiotelemetry network include The distance between radio stations should not be greater than approximately 25 m...

Page 5: ...ing the desired measurements Any field station can also operate as a repeater The only requirement is that the station s antenna must be able to communicate in all desired directions This may require...

Page 6: ...the field station s Normally all communication to the field stations originate at the base station Data retrieval remote programming and system analysis can all be done from the base station Equipmen...

Page 7: ...too long of a distance or an obstacle which impedes direct communication A repeater is not always required in a radiotelemetry network A field station can also function as a repeater Equipment Requir...

Page 8: ...e radio directly onto the bottom of the RF232T Secure the BNC connector from the radio s cable to its hole on the back of the RF232T See Figure 3 7 for assistance 3 Connect the radio to 12 V ground an...

Page 9: ...ast type of message about this station If the site is black no communication has been attempted yet If the site is red or blue than a warning or fault message has occurred If the site is green success...

Page 10: ...H SETTING box Separate the ids with a space When the BEGIN button is selected the entire link will be tested The signature of the remote site will still be returned An additional row of quality number...

Page 11: ...made 2 6 1 NETWORK HEALTH DISPLAY AND ERROR WARNING AND STATUS MESSAGES As remote sites are added to the network description they also appear on the network health display NetAdmin main screen The col...

Page 12: ...ough and will be retransmitted at a smaller size Over RF data is transferred as a stream of bits encoded into short and long periods of time between transitions We call the short time a 1T period and...

Page 13: ...d The following capabilities are important when using RTMS CR10T and RF95T modems A maximum depth of four repeaters can be used 150 is maximum number of remote RF95T CR10T site that may be used with a...

Page 14: ...Station ID 3 1 4 THE CARRIER DETECT LIGHT The Carrier Detect Light on the front panel of the RF95T has several purposes The primary function of the light is to indicate when data is being received or...

Page 15: ...e or last common repeater sending a single short broadcast to all remotes in the affected area Each remote RF95T upon receiving the broadcast checks the local datalogger for any computer bound packets...

Page 16: ...ed 9 TXD Received by RF95T 3 1 9 RF95T CURRENT DRAIN Quiescent 1 4 mA Wait 3 4 mA Active 30 mA Waiting to respond to broadcast Usually the radio current drain is the relevant factor in battery power c...

Page 17: ...he following steps will install a radio for a field or repeater station 1 Secure the radio and its bracket using the four screws from the RF95T Modem s lid 2 Connect the 10 pin connector with the red...

Page 18: ...TORS The most common cable type to connect a radio to the antenna is a coaxial RG 8A U cable Two connectors are required for each length of cable The connector for the radio is a BNC type connector Th...

Page 19: ...ort 3 4 2 ENCLOSURES Enclosures are needed to keep water and debris from damaging the data acquisition equipment Campbell Scientific Inc enclosures are designated as raintight and are designed to moun...

Page 20: ...to drop voltage and the other to raise voltage Alkaline batteries connected to the external port would be charged by the charging source which can cause an explosion CAUTION Do not use the external po...

Page 21: ...230 or 240 VAC if a small wiring modification is done 1 First disconnect any AC power 2 Lift the cover off the RF232 and locate the power supply P N 4918 as shown in Figure 3 8 3 Unscrew the four Phil...

Page 22: ...SECTION 3 RADIOTELEMETRY NETWORK COMPONENTS 3 10 FIGURE 3 8 Top View of the RF232T Base Station...

Page 23: ...until another description is made active even if RTMS is completely stopped If alternative communication paths exist i e a backup repeater in case the main repeater fails network descriptions utilizin...

Page 24: ...hould be large enough to accommodate the initial attempt and some retries 4 1 1 3 NETWORK HEALTH AND STATUS WARNING FAULT MESSAGES The RF specific messages are described in Section 2 6 1 of this manua...

Page 25: ...only be used with one site at a time and is not intended for unattended use While it is possible to have a station communicating with RTMS and GraphTerm at the same time more predictable behavior is e...

Page 26: ...er that is set with the switches in the RF95T The PATH parameter is the station number of the RFBase see above STATION NO followed by a colon As with the datalogger if the NetAdmin NBR parameter for t...

Page 27: ...The datalogger flags and ports may also be toggled Values can also be directly loaded into Input Locations Data can be collected for archiving while monitoring GraphTerm also supports the display of...

Page 28: ...ater or field site for single links Multiple site links may be tested by preceding the remote station ID with station ID from sites to be used as repeaters Separate the station ID numbers with commas...

Page 29: ...1001 1100X 100 0010 0110X 15 1111 0000X 58 0101 1100X 101 1010 0110X 16 0000 1000X 59 1101 1100X 102 0110 0110X 17 1000 1000X 60 0011 1100X 103 1110 0110X 18 0100 1000X 61 1011 1100X 104 0001 0110X 19...

Page 30: ...10 0111X 146 0100 1001X 189 1011 1101X 232 0001 0111X 147 1100 1001X 190 0111 1101X 233 1001 0111X 148 0010 1001X 191 1111 1101X 234 0101 0111X 149 1010 1001X 192 0000 0011X 235 1101 0111X 150 0110 10...

Page 31: ...the cable The two leads on the SC532 should be stripped and tinned for connection to a battery Most laptops have a 9 pin RS232 port so a 9 to 25 pin RS232 cable is needed to connect the computer to t...

Page 32: ...ts 95 dBm Signal Power SP TP AG PL CL where SP Signal Power dBm Power of the signal received TP Transmit Power dBm Rated output power of transmitting radio PL Path Loss dB Power lost over the distance...

Page 33: ...e frequency the stronger the radiation field However at higher frequencies more energy is absorbed by the surface The VHF and UHF frequencies can travel only a short distance between radio stations Th...

Page 34: ...er at the computer is responsible for naming the desired communication path with a setup string This setup string contains any repeater modem IDs and the destination modem ID in sequence After sending...

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