Valhalla 4100 SERIES Operation Manual
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Contents
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17InterfaceOption BCD: Data OutputThis option provides parallel BCD data on p rear-panel 50-pin connector. All outputs areTTL comparable levels with a drive capability of 1 LS load. The Option BCD may be used todrive the Valhalla Model 1248. (See Chapter 8)Model 1248: Dual-Limit ComparatorThe Valhalla Model 1248 may be used in conjunction with a 4100 Series Ohmmeter and OptionBCD above. The Model 1248 is a dual-limit BCD comparator that interprets the displayindications of the ohmmeter as either "HI", "LO" or "GO", based on a tolerance that is set by theuser. Relay contact closure is provided to trigger an alarm, counter, batch sorter or other device.The 1248 also reduces operator workload by allowing him to make an instant determination ofthe test results. The mating cable from the ohmmeter to the 1248 is 3' in length and designatedas "IDC-2".Options IEEE, RS232, and PAR: Data OutputThe Valhalla 4100 Series of ohmmeters is available with several of the industry's most popularremote interfaces. These include a GPIB IEEE-488.2 compatible interface, a serial RS232Cinterface, and a Centronics parallel printer interface for direct print-out capability. Theinterfaces are for data acquisition only and do not provide range or function control of theohmmeter. The interfaces are available in any combination and may be used simultaneously.Also refer to Chapter 8 and additional Addendums. |
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