CONTOUR CPU Description

The CONTOUR digital hardware is modified from INMS digital hardware. It consists of a CPU board, Analog interface board (incl microsequencer circuits), and PROM board.

The CPU board consists of the MA31750 microprocessor, 10 MHz clock oscillator, address and data bus transceivers, watchdog timer, 10 MHz clock oscillator, wait-state generator, clock divider circuitry (for timer A and B @ 100KHz), configuration register, address decoding, Microsequencer interface, 1553B Bus Interface Unit transceivers (to be re-designed), UART and LED interfaces (for debug purposes), PROM address and data transceivers.

The PROM board consists of PROM decoding logic, UART decoding logic (unused in flight), PROMs and 64K X 16 bits Harris HS-6617-RH PROMs and transceivers.

The Analog interface board consists of Microsequencer interface. The microsequencer interfaces to the pulse counters, RF board, various DACs, and AMUXes. The microsequencer interface will be modified for 3 frequencies and extra glue logic will be added for extra DACs and the number of bits per DAC setup.

Software Controllable Lens/Hardware list

Name
# Bits
Voltage Range
Description
ID1
8
(1200 V, need 0
Ion Deflector 1
ID2
8
(1200 V, need 0
Ion Deflector 2
ID3
8
(1200 V, need 0
Ion Deflector 3
ID4
8
(1200 V, need 0
Ion Deflector 4
TPL
8
(1200 V, need 0
Top Plate
QL1
12/14?
-300 to 10 V
Quad Lens 1 and Floating @ 1300 V
QL2
12/14?
-300 to 10 V
Quad Lens 2 
QL3
12/14?
-300 to 10 V
Quad Lens 3
QL4
12/14?
-300 to 10 V
Quad Lens 4 
QL5
12/14?
-300 to 10 V
QL5
QL6
12/14?
-300 to 10 V
QL6
OL1
8
-300 to 10 V
Open Lens 1
OL2
8
-300 to 10 V
Open Lens 2
OL3
8
-300 to 10 V
Open Lens 3
OL4
8
-300 to 10 V
Open Lens 4
OF1
1
-75 V
Open Source Filament #1 Ionization Energy
OF2
1
-75 V
Open Source Filament #2 Ionization Energy
CF1
1
-75 V
Closed Source Filament #1 Ionization Energy
CF2
1
-75 V
Closed Source Filament #2 Ionization Energy
BA
1
-75 V
BA Fil Ionization Energy ????
DT1
4/8?
TBD
Detector Threshold 1
DT2
4/8?
TBD
Detector Threshold 2
EM1
4
0 - 3500 V
Electron Multiplier 1 HV adjust
EM2
4
0 - 3500 V
Electron Multiplier 2 HV adjust
L2+3
8
(
Lens 2+3
QB
8
( 150 V
Quad Bias (from Float Module)
L1
8
-300 to 10 V
Lens 1
RF AC
12/14
(150
RF AC
RF DC
12/14
(150
RF DC
FA1
> 8
0 to 1500 V
Float Amplifier for Filament & Electron Gun Voltages
FA2
> 8
0 to 1500 V
Float Amplifier for Serial I/F and Ion Focus Voltages
V1
2
Digital
Valve Control
RV
2
Digital
Rupture Valve