Keithley 500 932 01C free download

File name 500_932_01C.pdf

AOM4 Programmable Excitation Module The AOM4 Programmable Excitation Module provides four channels of high-speed anaIog voltage 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 0-10.2375Voutput range has a resolution of 2.5mV and a maximum output cur- rent of 4OmA. Each output stage can be supplied either by the internal +l5V supply, or by an external supply of +l5 (+2, -0) VDC. 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 AOM4 module may be placed in any available slot in the system. To install the module, first turn off power and remove the top cover of the mainframe. Insert the module in the desired slot with the component side facing the power supply. General- ly, analog modules should be placed in the low-numbered slots to isolate them from power supply 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. User-Configured Components on the AOM4 Name Designation Function Screw Terminals Jl7'l Output Connection Channels O-3 Part of Jl.7l External Power Connections Jumper 101 WlOl Select Internal/External Supply Document Number: 500-932-01 Rev. C AOM4-1 Figure 1. AOM4 Module AOM42 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 AOM4 ground and leave the other end disconnected. J---J-+ EXTERNAL SUPPLY, IL!8 I","I (SEE TEXT FOR MAXIMUM VALUE) Figure 2. Typical AOM4 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 +l5 (+2, -0) VDC. When using the internal supply, jumper WlOl must be in the INT position. To operate the module on an exte