HP 10885A PC Axis Board

The HP 10885A PC Axis Board, a register-programmed position axis board, is ideal for making open-loop measurements and for providing position data for custom closed-loop servo electronics. It provides a 32-bit position word (in fractions of a wavelength) that is readable over a PC backplane and is also available from a real-time hardware output.

As part of an HP PC-based positioning system, the HP 10885A is especially suited to test or manufacturing systems that have moving platforms to carry the product being fabricated or inspected. The exceptional accuracy of the laser system allows the precise positioning and motion control required for consistent end-product production and quality.

[ Features ]

DOS programming environment saves development time
Eight-bit bus transfers provide compatibility with standard software programs
Included software programs provide fast setup and data gathering
Integrated board functions reduce system size, cost, and complexity
High reliability backed by three-year warranty

[ Specifications ]

PC Backplane Position Output

	Data Format:
		Units: fractions of a wavelength
		32 bits (4 bytes)
		2’s Complement
		Positive Logic
		Least Significant Bit (one count) equals resolution

	Typical Data Update Rate Over Backplane (Compiled Quick Basic Program):
		80286 @ 8 MHz:	58 kHz
		80386 @ 25 MHz:	74 kHz
		80486 @ 25 MHz:	105 kHz

	Data Age and Sample Ambiguity:
		After a sample operation, the value in the position register will 
		reflect an actual position that occurred 0.1 to 1.4 us before the 
		sample operation was initiated.

	Sample Delay:
		The position register may be read 1.5 us after a sample operation.

Connector Position Output

	Data Format:
		Units: fractions of a wavelength
		2’s Complement
		32-bit parallel binary
		Positive Logic
		Least Significant Bit (one count) equals resolution

	Data Update Rate:
		HP 5517A:	1.5 - 2.0 MHz
		HP 5517B:	1.9 - 2.4 MHz
		HP 5517C:	2.4 - 3.0 MHz
		(Hardware included to synchronize to slower clocks.)

	Data Age:
		HP 5517A:	2.1 - 4.1 us
		HP 5517B:	1.8 - 3.3 us
		HP 5517C:	1.5 - 2.7 us

		Data Age is dependent on the laser head reference signal 
		(split-frequency) and on knowing exactly when, in relation to 
		the rising edge of the Error Clock, the Position Error lines are 
		sampled. Call this time deltaT.

		Data Age = 

		0.34 us + deltaT us + ((4.0 +/- 0.5) / (Reference (in MHz))) us

		Additionally, the Data Age may vary up to 0.1 us typically and up 
		to 0.25 us in a worst case situation as a result of the Reference 
		frequency varying over time.

Power Requirements (typical)

	5 Vdc at 1.6 A
	+/-12 Vdc at 0.015 A

Weight 
	0.30 kg (0.65 lb)

Operating Temperature 
	0 - 40 degrees C (32 - 104 degrees F)

ISA Compatibility
	Standard XT-size board which supports 8-bit bus transfers

[ Ordering ]

HP 10885A PC Axis Board Opt 002 2 Axis Interconnect Cable Opt 003 3 Axis Interconnect Cable Opt 004 4 Axis Interconnect Cable Opt 005 5 Axis Interconnect Cable Opt 006 6 Axis Interconnect Cable Opt W50 5-Year Return Repair Service

HP 10886A		PC Compensation Board
HP 10880A/B/C		Receiver Cables
HP 10881A/B/C/D/E/F	Laser Head Cables

The HP 10885A can be configured with appropriate laser heads, optics,
sensors, and cables to build a complete PC-based interferometer
positioning system tailored to application requirements.

[ Assistance ]

To help you make the right instrument choices

Local Sales Office

[ Related ]

Related HP 1088XX PC Electronics Family product datasheets:

HP 10885A PC Axis Board

HP 10889B PC Servo-Axis Board

Related product families available online:

HP1088XX PC Electronics Family