background image

PSD-4 AND PSD-8

14

Figure 6. Main Channel DTE with Sub-Channel DCE.

Figure 7. Main Channel DTE with Sub-Channel DTE.

Summary of Contents for PSD-4

Page 1: ...echnical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info b...

Page 2: ...erated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measure...

Page 3: ...ire por los orificios de ventilaci n 10 El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadore...

Page 4: ...ADEMARKS USED IN THIS MANUAL AS 400 is a registered trademark of International Business Machines Corporation Any other trademarks mentioned in this manual are acknowledged to be the property of the tr...

Page 5: ...rnal from sub channel 1 Data Rates Asynchronous Up to 19 2 kbps Synchronous Internal Clock 1 2 2 4 4 8 7 2 9 6 14 4 or 19 2 kbps External Clock Up to 19 2 kbps Connectors IEIA RS 232 C CCITT V 24 DCE...

Page 6: ...for longer than a configured amount of time the PSD will automatically disable that sub channel A front panel LED will illuminate to indicate that the sub channel has been automatically disabled The s...

Page 7: ...There are two EXT BUFFER switches on the PSD 8 These are extra buffers not external buffers Use the extra buffers when the PSD is connected to equipment that cannot accept an external clock from the P...

Page 8: ...Chas GND J1 CONNECT DISCONNECT The CONNECT setting connects signal ground DISCONNECT to chassis ground The DISCONNECT setting isolates them PIN 24 DIS J1A ENABLE ENABLE Exits main channel when PIN 24...

Page 9: ...PSD 4 AND PSD 8 8 Figure 3 The Printed Circuit Board of the PSD 4 Figure 4 The Printed Circuit Board of the PSD 8...

Page 10: ...ock BIT RATE rotary switch Set BRI to the correct system speed Jumper J7 If the equipment attached to the main channel is DCE strap to NORMAL If the equipment is DTE strap to FROM EXT DTE 3 Synchroniz...

Page 11: ...the equipment attached to the sub channel 1 is DCE strap to NORMAL If the equipment is DTE strap to FROM EXT DTE 3 4 AC Power On the rear panel of your unit locate the 110 220 VAC selector Set the se...

Page 12: ...er source and the green Power LED does not light up check the following Make sure the rear panel rocker switch is on and is lit Verify that the 110 220 selector is set correctly Unplug the unit and ch...

Page 13: ...The back panels of the PSD 4 top and the PSD 8 bottom FUSE POWER Rocker switch to turn AC power on or off 110 220 VAC Selector Align either 110 or 220 with the arrow SCREWS Loosen these screws to tak...

Page 14: ...N if one of the sub channel s DTR DSR is ON SUB CHANNEL CONTROL SIGNALS RTS DCD Follows the main channel RTS DCD unless the sub channel is disabled CTS In RTS contention mode selected sub channel foll...

Page 15: ...PSD 4 AND PSD 8 14 Figure 6 Main Channel DTE with Sub Channel DCE Figure 7 Main Channel DTE with Sub Channel DTE...

Page 16: ...CHAPTER 5 Technical Guide 15 Figure 8 Main Channel DCE with Sub Channel DCE Figure 9 Main Channel DCE with Sub Channel DTE...

Page 17: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 1998 Black Box Corporation All rights reserved...

Reviews: