RCA RMB-167 manual Analog-to-Digital Converter Reference Jumpers

Page 26

7.2Analog-to-Digital Converter Reference Jumpers

The analog-to-digital converter requires a ground and reference voltage. These reference voltages may be provided either from JP2 lines marked VG (ground reference voltage) and VR (reference voltage), or connected to the +5 volt TTL supply. Jumpers JP4 and JP5 select the source of reference voltages. The center posts of JP4 and JP5 are connected to the SAB-C167 VAREF and VAGND inputs. Post 1 of JP4, marked VCC is connected to the +5 volt supply. Thus, connecting this post with the center post selects VAREF to be the same as the +5 volt supply. In the alternate position, VAREF is to be supplied from JP7 from the terminal marked VR.

Similarly, the post marked GND of JP5 is connected to the ground of the supply. Connecting the center post of JP5 with the post marked GND selects VAGND to be the same as the ground of the supply voltage. In the alternate position, the ground reference is to be supplied from the JP7 terminal marked VG.

-20-

Image 26

Contents USER’S Guide Page Page Warranty Table Of Contents 10.1.1 Hardware READS166 Evaluation Software OverviewParts List System Requirements Software Installation, READS166Software Third Party SoftwareSoftware Initialization Connections, Jumper SettingsSTART-UP Serial NumberBootstrapping Verifying that the Monitor is Loaded A D S C O M M a N D SSoftware Set-up TroubleshootingHardware Set-up PC set-upSerial port PowerOperating Notes Jumper SelectionEprom Memory Options Memory OptionsRAM Memory Options Alternate Memory Map with Eprom in Low MemoryMoving RMON167 to Eprom Eprom CFG1Rstisr Syscon is 89h on the 167 dw 089E6h Dw 0F800h Nop Mov 1 U1 Equations Default GAL EquationsGAL Equations 1 U1 Equations For Eprom In Low Memory Alternate GAL EquationsU2 Equations 2 U2 Equations For Eprom In Low Memory Equations Headers and Jumpers JP6 System Header SignalPins Signal System and I / O HeadersJP7 Input/Output Header Signal 166 JP2 JP7Signal RMB-167 JP8 Extra Input/Output Header of the RMB-167 SignalPins Analog-to-Digital Converter Reference Jumpers Bootstrapping S0RIRDiswdt Einit Mov R1, #0A55Ah Minimal Monitor Download HEX file Port ConfigurationMON167 Monitor HelpPort Data Word MemoryREADS166 Version READS166 V3.00 ConceptsModule Executable ProjectsArchive Projects Circuit Diagrams