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- 10885A PC Axis Board [Obsolete]
10885A PC Axis Board
Product Status:
Obsolete
Obsolete
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HIGHLIGHTS
General
- Platform and size: PC-ISA-XT, 98 x 339 mm
- Number of Axes per Board: 1
- Resolution Extension: x32
- External Sample Inputs: 1
Operation with Plane Mirror Optics
- Resolution: 4.9 nm
- Maximum Velocity (also limited by laser head): 460 mm/sec
Timing
- Position Data Update Rate: 1/Ref Freq
- External Sample Uncertainty: ± 1/Ref Freq
Special Features
- 32-bit, 2´s Complement Hardware Position Output
- 32-bit Programming API available for Windows 9x, NT, 2000, XP
The Keysight 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.
- 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:
- Keysight 5517A: 1.5 - 2.0 MHz
- Keysight 5517B: 1.9 - 2.4 MHz
- Keysight 5517C: 2.4 - 3.0 MHz
- (Hardware included to synchronize to slower clocks.)
- Data Age:
- Keysight 5517A: 2.1 - 4.1 us
- Keysight 5517B: 1.8 - 3.3 us
- Keysight 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
- 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
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