East Coast Datacom DMM-X21 Operation Manual Download

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OPERATIONS MANUAL

DIGITAL MIXING MODULE

DMM-X21

14 March 1997

Manufactured By

East Coast Datacom, Inc.

FOR TECHNICAL SUPPORT CALL:

East Coast Datacom, Inc.

571 Haverty Court, STE N

Rockledge, FL 32955 USA

TEL: (800) 240-7948 or (407) 637-9922

FAX: (407) 637-9980

Email:

Web Site:

www.ecdata.com

PT # 719006-A

Summary of Contents for DMM-X21

Page 1: ...Page 5 2 14 FIFO GENERAL OPERATION J14 Page 5 2 13 DCE DTE SWITCHES Page 5 2 12 CONTROL C LEAD PORTS 1 4 Page 5 2 11 INDICATE I LEAD PORTS 1 4 Page 4 2 10 CASCADING OR CONCATENATION Page 4 2 9 FALL B...

Page 2: ...h 1997 Manufactured By East Coast Datacom Inc FOR TECHNICAL SUPPORT CALL East Coast Datacom Inc 571 Haverty Court STE N Rockledge FL 32955 USA TEL 800 240 7948 or 407 637 9922 FAX 407 637 9980 Email e...

Page 3: ...s in materials and workmanship The warranty period shall be three 3 years from the date of shipment E C D s sole obligation under its warranty is limited to the repair or replacement of defective equi...

Page 4: ...In applications where the master port and the selected port provide their own clocks data is clocked into the buffer at the receive clock rate of the active port and clocked out using the master port...

Page 5: ...te in union with individual Green subchannel port activity LEDs and identify Transmit and Receive data transmissions Yellow LEDs provide the user with a visual indication of a streaming DTE ref 2 6 Po...

Page 6: ...ANTI STREAMING 2 6 1 AUTOMATIC REMOVAL The DMM X21 incorporates circuitry that will when enabled automatically remove a streaming DCE or DTE from service A streaming terminal is defined as a terminal...

Page 7: ...subchannel that is streaming All other DTE s will now continue to be serviced by the DMM X21 However you still need to fix the offending DTE or DCE device that has Control C or Indicate I continually...

Page 8: ...hronous clocks Mode B FIFOs self center after overrun or overflow for isochronous clocks 2 12 CONTROL C LEAD The DMM X21 has internal jumpers for Normal or Forced Control C This option will allow Cont...

Page 9: ...20mm 320ma 315ma Fuses For 220 VAC 10 operation the unit is equipped with slow blow 5 x 20mm 160ma Fuses Spare fuses may be purchased by calling East Coast Datacom or by calling the fuse manufacturer...

Page 10: ...ed it will be necessary to remove the top cover of the DMM X21 Remove the AC Power source or Disconnect the AC Power before servicing the unit Removal of the top cover is accomplished by using a small...

Page 11: ...SIGNAL TIMING B 13 X INDICATE B 12 X RECEIVE B 11 X CONTROL B 10 X TRANSMIT B 9 GROUND 8 X BYTE TIMING A 7 X SIGNAL TIMING A 6 X INDICATE A 5 X RECEIVE A 4 X CONTROL A 3 X TRANSMIT A 2 SHIELD 1 FROM...

Page 12: ...4 2 FACTORY DEFAULT CHART East Coast Datacom Inc DMM X21 OPERATIONS MANUAL Page 10 ON 1 2 3 4 5 6 7 8 9 1 0 DMM X21 FACTORY DEFAULT SWITCH GUIDE...

Page 13: ...ormation Service 5285 Port Royal Road Springfield VA 22161 Telephone 703 487 4650 ISO Outside the United States International Organization for Standardization Central Secretariat 1 rue de Varembe CH 1...

Page 14: ...Power Source 100 120 to 200 220VAC 10 50 60Hz 0 16 0 08A external 110 220 volt select switch IEC Power Inlet 2 5mm Fuses Environmental Operating Temperature 32 to 122 F 0 to 50 C Relative Humidity 5 t...