Hardware
7-11
External TTL BNC Connectors
NetScan’s rear panel provides two external trigger BNC connectors. The BNC TTL Scan output is used for
synchronizing equipment with NetScan. NetScan can be programmed to trigger on a rising or falling TTL level.
Any TTL level signal (> 2.2V = Hi, < 0.8V = Lo) may be used as a trigger pulse. A trigger pulse may also be used
to generate a Service Request. Note that the TTL Out is a LS-TTL compatible output, 0.4 mA sourcing, 8 mA
sinking. When a scan is logged into the acquisition buffer (after the actual scan), the TTL output signal is pulsed for
100 ms. Refer to the following trigger timing diagram.
Signal Conditioning Cards
NetScan and its expansion chassis can each house a quantity of 4 signal conditioning cards (8 total, for a possible
128 channels). The signal conditioning cards can be varied using any combination of the following 5 types.
•
CSN/14/TC/P Thermocouple and low volts card for units with subminiature-plugs
•
CSN/14/LV/T Low volts card with removable screw terminals
•
CSN/14/LV/B Low volts card with BNCs
•
CSN/14/LV/S Low volts card with safety jacks
•
CSN/14/HV/S High volts card with safety jacks
Each scanning module fits into the metal, shielded chassis. The chassis insulates the cards from noise and maintains
a constant internal temperature.
Summary of Contents for OMB-NETSCAN 1500
Page 6: ...iv NetScan User s Manual...
Page 18: ...1 12 Configuring and Starting NetScan NetScan User s Manual Notes...
Page 38: ...3 8 General Information and Specifications NetScan User s Manual Notes...
Page 82: ...4 44 ChartView Software Reference NetScan User s Manual Notes...
Page 118: ...6 20 Calibration NetScan User s Manual...
Page 140: ...A ii NetScan User s Manual...
Page 192: ...API Command Reference Appendix A A 52 NetScan User s Manual Notes...
Page 237: ...Appendix D Registers Data Formats Queries NetScan User s Manual D 13...
Page 244: ...NetScan Program Examples Appendix E E 2 NetScan User s Manual...
Page 248: ...ASCII Code Summary Appendix F F 4 NetScan User s Manual Notes...
Page 250: ...NetScan Error Messages Appendix G G 2 NetScan User s Manual Notes...
Page 252: ...Abbreviations Appendix H H 2 NetScan User s Manual Notes...
Page 254: ...NetScan User s Manual...