Test Procedure for the Base I/O Module ....................................................................... 4-11
Table 4-4: Frequency Tolerance for Various Sample Rates .......................................... 4-11
Table 4-5: Sample screenshot showing a successful test .............................................. 4-12
Table 4-6: SDI Timing & Jitter Specifications................................................................. 4-15
Section 5 Troubleshooting
.........................................................................................................................................5-1
PROBLEMS AND POTENTIAL SOLUTIONS...............................................................................5-1
Loudness incorrect compared to other Dolby Digital Transmissions............................. 5-1
Loudness Controller reduces transient punch of programming.................................... 5-2
Transient loudness events (like esses in speech) sound obtrusively loud...................... 5-2
Commercials too loud in sound for picture applications ............................................... 5-2
LFE channel is unbalanced with respect to the rest of the audio spectrum ................. 5-3
Dialog is buried by music and/or effects......................................................................... 5-3
Dialog is muffled.............................................................................................................. 5-3
Shrill, harsh sound............................................................................................................ 5-3
Dull sound......................................................................................................................... 5-3
Too much bass when the loudness controller is producing large amounts of GR........ 5-4
RFI, hum, clicks, or buzzes................................................................................................ 5-4
Unexpected gain pumping when processing 5.1 material............................................. 5-4
Poor peak modulation control ........................................................................................ 5-4
Audible distortion ............................................................................................................ 5-4
Audible noise.................................................................................................................... 5-5
System will not pass line-up tones at 100% modulation ............................................... 5-6
System will not pass Emergency Alert System (“EAS” USA Standard) tones at the legally
required modulation level ............................................................................................... 5-6
System Receiving 8685’s digital output will not lock ..................................................... 5-6
System will not lock to video sync at 88.2 or 96 kHz...................................................... 5-6
AES Channel Status Bits will not set the 8685’s 2.0 processing to Stereo or Dual-Mono
mode................................................................................................................................. 5-6
Equipment receiving the 8685’s 2.0 Processing output changes operation mode
unexpectedly. ...................................................................................................................5-6
General dissatisfaction with subjective sound quality ................................................... 5-7
Security passcode lost (when unit is locked out) ............................................................ 5-7
Connection Issues between the 8685 and a PC, Modem, or Network ................5-7
Troubleshooting Connections.................................................................................5-7
You Cannot Access the Internet After Making a Direct or Modem Connection to
the 8685: ..................................................................................................................5-8
OS-SPECIFIC TROUBLESHOOTING ADVICE ............................................................................5-9
Troubleshooting Windows XP Direct Connect: .....................................................5-9
Troubleshooting Windows XP Modem Connect: ................................................5-10
TECHNICAL SUPPORT.......................................................................................................5-10
FACTORY SERVICE...........................................................................................................5-11
SHIPPING INSTRUCTIONS ..................................................................................................5-11
Section 6 Technical Data
.........................................................................................................................................6-1
SPECIFICATIONS ................................................................................................................6-1
Performance.............................................................................................................6-1
Installation ...............................................................................................................6-2
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