Keithley 500 931 01B free download

File name 500_931_01B.pdf

AOM3 Current Loop Output Module The AOM3 Current Loop Output Module provides four channels of high-speed analog current output. Each channel has an independent D/A converter. The D/A converters offer true X&bit resolution with a maximum nonlinearity of *.0X?%. A single O-20.475mA output range has a resolution of 54 and a voltage compliance of w sUPPLY-6V). Each current output can be supplied either by the internal +l5V supply, or by an external supply of up to +26V DC. A system strobe feature, supported by two levels of data latching in the D/A converters, allows any number of D/A channels to be updated simultaneously. Signals are connected directly to the module via screw terminals mounted on the right- hand side of the module board. The AOM3 module may be placed in any available slot in the system. To install the module, turn off power, then remove the top cover of the mainframe and insei? it in the desired slot with the component side facing the power supply. Generally, analog modules should be placed in the low-numbered slots to isolate them from power supp- ly thermal and noise effects. CAUTION: Always turn off the system power before installing or removing modules. To avoid possible EM1 radiation never operate the system with the top cover removed. User-Configured Components All output connections are made to screw terminals located on the module. Two ter- minals are provided for each channel: signal output and common ground. Table 1. Summary of User Configured Components on the AOM3 Name Designation Function Screw Terminals J169 Output Connection Channels O-3 Part of J169 External Power Connections Jumper 101 WlOl Select Internal/External Supply Document Number: 500-931-01 Rev. B AOM3-1 Figure 1. AOM3 Module AOM3-2 Connections Terminal connections are shown in Figure 2, which illustrates a typical connecting scheme. The use of shielded cable is recommended to minimize the possibility of EM1 radiation. Connect one end of the shield to AOM3 ground and leave the other end disconnected. EXTERNAL SUPPLY, 26V MAXIMUM (OPTIONAL) AA0 TEXT FOR MINIMUM VALUE) Figure 2. vplcal AOM3 Output Connections (Channel 0 shown) Voltage Supply Connections The channel outputs may be operated from either the internal +l5V supply or an exter- nal supply of up to +26V. When using the internal supply