Keithley 501 912 01C free download

File name 501_912_01C.pdf

AMM2 Master Analog Measurement Module The AMM2 Analog Measurement Module combines three important Series 500 func- tions into a single module. First, the AMM2 functions as a standard analog input module, and wiu accept up to 16 single-ended or eight differential analog input signals. It contains signal conditioning and switching circuitry for these channels. Second, the AMM2 selects and conditions analog signals from other analog input modules in a Series 500. Last, the AMM2 serves as a 16-bit A/D converter for its own analog input channels, as well as any other analog signals which have been processed by the global select/conditioning circuitry. After analog conditioning, signals are routed to the A/D converter section of the module for the analog-to-digital conversion process. Input signals are applied to the AMM2's analog input channels through on-card quick- connect screw terminals. The AMM2 has a total of 16 local single-ended, or eight dif- ferential inputs. The input configuration is controlled through software, rather than with hardware switches. These analog input channels can be conditioned with pro- grammable local gains of either xl or x10. Global conditioning consists of a high-speed software-controlled gain amplifier with programmable xl, x2, x5 and x10 gain values. All analog inputs connected to the Series 500 pass through the global circuitry, whether the signals originate on the AMM2 or some other analog input module. Therefore, these gain values can be applied to any analog input in the system. For A/D conversion, the AMM2 uses a l&bit successive approximation converter. A maximum conversion time of only 20psec allows sampling rates as high as 5OkHz. To maximize resolution, the AMM2 has O-XIV and &lOV A/D converter ranges which are software selectable. CAUTION: Always tum off the system power before installing or removing modules. To minimize the possibility of EM1 radiation, always operate the system with the top cover in place and properly secured. The Ah4M2 is designed to be used only in slot 1 of the 500-series system baseboard. To install the module, first remove the baseboard top cover and install the module in slot 1 with the component side facing the power supply. Document Number: 501-912-01Rev. C AMM2-1 Figure 1. AMM2 Component Layout AMM2-2 High-speed Acquisition Mode with AMMP and ANINQ (SOFT500 and QUICK500) The ANINQ command can operate the AMM2 module in a high-speed "auto-acquire" mode at an aggregate throughput rate of up to 5OkHz. Auto-acquire applies to single or multiple channels. For multiple channels, the pe