Yamaha DM2000 Owner's Manual - Page 66

TR Digital Outs, Terminating External Wordclocks

Page 66 highlights

52 Chapter 5-Digital I/O & Cascading Terminating External Wordclocks Wordclock signals distributed via BNC cables must be terminated correctly, otherwise, jitter and synchronization errors may result. Ideally, you should make a separate wordclock connection to each device and terminate it. The following examples show two ways in which wordclock signals can be distributed and how termination should be applied in each case. Normally the WORD CLOCK 75Ω ON/OFF switch should be set to ON. The OFF setting provides support for wordclock source devices with special specifications. Star Distribution In this example a dedicated wordclock distribution box is used to supply wordclock signals to each device individually. Termination is applied at each device. Wordclock master WC OUT (BNC) Wordclock distribution box WC IN (BNC) Device-A Termination = ON Wordclock slave WC IN (BNC) Device-B Termination = ON Wordclock slave WC IN (BNC) Device-C Termination = ON Wordclock slave WC IN (BNC) Device-D Termination = ON Wordclock slave Daisy Chain Distribution In this example the wordclock signal is distributed in a "daisy-chain" fashion, with each device feeding the wordclock signal on to the next. This method of distribution is not recommended for larger systems. Wordclock master WC OUT (BNC) WC IN (BNC) WC OUT (BNC) Device-A Termination = ON Wordclock slave WC IN (BNC) WC OUT (BNC) Device-B Termination = ON Wordclock slave WC IN (BNC) Device-C Termination = ON Wordclock slave 2TR Digital Outs The DM2000 features three sets of 2-track digital outputs: 2TR OUT DIGITAL AES/EBU 1 and AES/EBU 2 use XLR-3-32-type connectors and output AES/EBU format digital audio. 2TR OUT DIGITAL COAXIAL 3 uses a phono connector and outputs consumer format (IEC-60958) digital audio. These outputs can be patched to the Bus Outs, Aux Sends, Matrix Sends, the Stereo Out, Input or Output Channel Insert Outs, or the Control Room signal (see page 65). They can also be patched to Direct Outs (see page 65). These outputs can output digital audio signals at sampling rates other than the current DM2000 rate by using the internal sampling rate converters (see page 53). Digital output signals can be dithered for transfer to lower-resolution systems (see page 57). DM2000-Owner's Manual

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
  • 249
  • 250
  • 251
  • 252
  • 253
  • 254
  • 255
  • 256
  • 257
  • 258
  • 259
  • 260
  • 261
  • 262
  • 263
  • 264
  • 265
  • 266
  • 267
  • 268
  • 269
  • 270
  • 271
  • 272
  • 273
  • 274
  • 275
  • 276
  • 277
  • 278
  • 279
  • 280
  • 281
  • 282
  • 283
  • 284
  • 285
  • 286
  • 287
  • 288
  • 289
  • 290
  • 291
  • 292
  • 293
  • 294
  • 295
  • 296
  • 297
  • 298
  • 299
  • 300
  • 301
  • 302
  • 303
  • 304
  • 305
  • 306
  • 307
  • 308
  • 309
  • 310
  • 311
  • 312
  • 313
  • 314
  • 315
  • 316
  • 317
  • 318
  • 319
  • 320
  • 321
  • 322
  • 323
  • 324
  • 325
  • 326
  • 327
  • 328
  • 329
  • 330
  • 331
  • 332
  • 333
  • 334
  • 335
  • 336
  • 337
  • 338
  • 339
  • 340
  • 341
  • 342
  • 343
  • 344
  • 345
  • 346
  • 347
  • 348
  • 349
  • 350
  • 351
  • 352
  • 353
  • 354
  • 355
  • 356
  • 357
  • 358
  • 359
  • 360
  • 361
  • 362

52
Chapter 5—Digital I/O & Cascading
DM2000—Owner’s Manual
Terminating External Wordclocks
Wordclock signals distributed via BNC cables must be terminated correctly, otherwise, jitter
and synchronization errors may result. Ideally, you should make a separate wordclock con-
nection to each device and terminate it. The following examples show two ways in which
wordclock signals can be distributed and how termination should be applied in each case.
Normally the WORD CLOCK 75
ON/OFF switch should be set to ON. The OFF setting
provides support for wordclock source devices with special specifications.
Star Distribution
In this example a dedicated wordclock distribution box is used to supply wordclock signals
to each device individually. Termination is applied at each device.
Daisy Chain Distribution
In this example the wordclock signal is distributed in a “daisy-chain” fashion, with each
device feeding the wordclock signal on to the next. This method of distribution is not rec-
ommended for larger systems.
2TR Digital Outs
The DM2000 features three sets of 2-track digital outputs: 2TR OUT
DIGITAL AES/EBU 1 and AES/EBU 2 use XLR-3-32-type connectors
and output AES/EBU format digital audio. 2TR OUT DIGITAL
COAXIAL 3 uses a phono connector and outputs consumer format
(IEC-60958) digital audio. These outputs can be patched to the Bus Outs, Aux Sends,
Matrix Sends, the Stereo Out, Input or Output Channel Insert Outs, or the Control Room
signal (see page 65). They can also be patched to Direct Outs (see page 65). These outputs
can output digital audio signals at sampling rates other than the current DM2000 rate by
using the internal sampling rate converters (see page 53). Digital output signals can be dith-
ered for transfer to lower-resolution systems (see page 57).
Device-A
Termination =
ON
Device-B
Device-C
Device-D
Termination =
ON
Termination =
ON
Termination =
ON
WC OUT
(BNC)
Wordclock
master
Wordclock
distribution box
Wordclock slave
Wordclock slave
Wordclock slave
Wordclock slave
WC IN (BNC)
WC IN (BNC)
WC IN (BNC)
WC IN (BNC)
Device-A
Termination =
ON
Device-B
Device-C
Termination =
ON
Termination =
ON
Wordclock
master
Wordclock slave
Wordclock slave
Wordclock slave
WC IN
(BNC)
WC OUT
(BNC)
WC OUT (BNC)
WC IN
(BNC)
WC IN
(BNC)
WC OUT
(BNC)