Instruction/ maintenance manual of the product AD1985A American Dynamics
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Model 1985A Megapower CPU Standby Switch Installation Instructions The 1985A Standby Switch is for use with either two 1995 or two 1996 Switching Systems. The 1985A reads the high speed data line of each CPU and determines if both are functioning normally.
The software/fmware furnished with this equipment is confidential to and is copyrighted by AMERICAN DYNAMICS. It is not to be copied or disclosed in any manner without the express written consent of AMERICAN DYNAMICS.
- - -= - I -=AMERICAN - - --ADYNAMICS -I- - - The installation of this product should be made by qualified service personnel and should conform to all local codes. / [ DONOTOPEN J / 1 CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVERS (OR BACK) .
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1985A MEGAPOWER CPU STANDBY SWITCH DESCRIPTION Mounting The 1985A Megapower Standby Switch allows two 1995 or 1996 CPUs to operate in tandem, where one CPU is the primary controlling CPU of the system and second is the backup CPU in stand - by mode.
1985A MEGAPOWER CPU STANDBY SWITCH RS - 232 Connector The RS - 232 connector used on all ports is an 8 - pin telephone type connector (RJ45). The terminal box supplied with the telephone cables has the same pinout signals as the telephone connectors, Please see Tables 1 for the pinout of these connectors.
1985A MEGAPOWER CPU STANDBY SWITCH High Speed Control Code Line The two sets of three BNC connectors, located on the rear panel of the 1985A, are used to connect the high speed control code from the CPUs to the Video Switching System. (See Figure 2). Each 1995 and 1996 Series CPU contains two control code outputs.
1985A MEGAPOWER CPU STANDBY SWITCH SETUP OPERATION All controls for the 1985A Standby Switch are located in the center of the unit’s front panel as shown in Figure 4 below.
APPENDIX.
APPENDIX A TYPICAL SYSTEM CONNECTIONS 1678CM TO 1985 0 I 13 I U U 1678CM THREE CONDUCTOR SHEWED BCLDON glro O R EQUVALH AD1 678TB M TP8059 Q 7.5 VOLTS AC ISAMP I NOTE ' THESE CONNECTIONS ARE TYPICAL OF ONE SYSTEM KEYBOARD.
APPENDIX B TYPICAL SYSTEM CONNECTIONS 1676 TO 1985 1676 CPUl Ti cpua 2 3 6 78 9 10 ALARM TP8059 7.5 VOLTS AC 1.5 UI? NOTE :THESE CONNECTIONS ARE TYPICAL OF ONE SYSTEM KEYBOARD.
APPENDIX C TYPICAL SYSTE 1696 T il CONNECTIONS 1 1985 AUX START RELAY OCrrPvT -BROWN ALARM NOTE THESE CONNECTIONS ARE lWlCAL OF ONE ALARM INTERFACE UNIT.
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... APPENDIX D (PAGE 2) TYPICAL SYSTEM CONNECTIONS 1995 TO 1985 w 1 CPU'S RECEIVE CPU'S , I 1995.
APPENDIX E 1 TYPICAL SYSTEM CONNECTIONS 1996 TO 1985 lgg6 I /- Q 10 F DATAQ-&mpob n' 0 PGM MON 7' t.
SPECIFICATIONS: Humidity: Relative humidity behveen 8 percent and 90 percent (non - condensing). Supply Voltage: 1985A 120 V, 60 Hz (95 to 135 VACI) 1985A/X - 220 V, 50 Hz, (198 to 264 VAC) Power: 8 Watts nominal Mounting: Size: Weight: 19 Ibs.
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If you already are a holder of American Dynamics AD1985A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime American Dynamics AD1985A.
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