Adjustable Digital I/O Board
The ADIO board supplies 32 channels of tri-state drivers along with 32 channels of programmable level receivers. The drivers and receivers are used for general purpose discrete (boolean) testing at voltage levels from -15 to +15 volts.
Features
- 32 programmable drivers, ±15 volts @ 24 milliAmps
- All drivers can be put into a high impedence (three-state) condition
- 32 dual level receivers, levels programmable from -15 to +15 volts
- External driver clock input
- External receiver strobe input
- Programmable delay on receiver strobe
- Connection to Digalog's Trigger Matrix Bus for driver clock and receiver strobe from other tester resources
Product Description
The Adjustable Digital Input/Output (ADIO) board provides the user the capability to drive and read back discrete or Boolean signals to the Unit Under Test (UUT). Each board has 32 drivers and 32 receivers. Both the drivers and receivers are capable of 15 volt levels. The functional calls associated with the ADIO divides the drivers and receivers into eight bit bytes for ease of programming. Driver outputs can be placed into a high impedance condition on a bit by bit basis. Both drivers and receivers are protected from overvoltage conditions.
Signals out to the Patchboard pins can be either clocked with an external signal or clocked from the tester's computer. Data can be strobed into the ADIO via a computer command, an external signal, or can be derived from the output clock. This receiver strobe can be delayed using the on-board delay unit.
When using multiple ADIO cards in a system, or when using the ADIO with a DIO card, all clocks and strobes come from the board designated as the master card. All other cards in the system will get their clock and strobe from the Digital T-Bus motherboard, which is driven by the master. There is only one master in the system at any time, and there must always be a master specified.
Digalog Systems, Inc., 3180 South 166th Street, New Berlin, WI 53151. Tel: 262-797-8000; Fax: 262-797-8003.