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If you do not require automated XY movement, yet you want automated Z-axis positioning for acquiring precise Z-axis stacks, then the PZMU-2000 is the solution. On select models of microscopes, ASI can add the PZMU-2000 to the top of your existing OEM stage. |
- Closed-loop control of the X, Y, and Z-axes for precise positioning and highly repeatable focusing
- Wide dynamic speed range with adjustable trapezoidal move profiles
- Smooth adjustable dual-range joystick control
- Backlit LCD display shows X, Y, and Z coordinates
- "Zero" and "Home" button for simple stand-alone operations
- Compact ergonomic tabletop control unit size is 6"D x 9"W x 3"H (9 x 23 x 16½ cm)
- Proven operation with many popular software packages
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Previously, available standard piezo elements had to be mounted to a single microscope objective to obtain nanometer-scale movement in the Z-plane. In contrast, the PZMU-2000 moves the entire specimen in the Z-plane. This offers several important advantages:
- By moving the entire sample in the Z-plane, any objective can be used instead of only the single objective with mounted piezo.
- The PZMU-2000 eliminates the twisting of wires that create failures within objective-mounted piezo systems.
- No spacers are required on any objectives with the PZMU-2000. Spacers are required with objective-mounted piezo systems, however, this added distance interferes with proper DIC operation. The PZMU-2000 allows unhindered DIC operation on all supported microscopes.
- The PZMU-2000's 100 micron (and the PZMU-2175's 175 micron) limited travel range of the piezo element can be compensated by adding ASI's focus controller to the fine focus shaft of the microscope. This precision closed-loop DC servo motor drive can position the sample anywhere within the microscope's range of focus. From there the piezo element of the PZMU-2000 can be used for ultra-fast nanometer positioning.
- The PZMU-2000 offers all of the advantages of a piezo focusing system with none of the drawbacks.
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| Z axis range of travel (± 5%) |
100 µm = PZMU-2000 |
| 175 µm = PZMU-2175 |
| Z axis resolution |
1.5 nm |
| Z axis repeatability |
< 0.1% move distance |
| Z axis transition time (10%-90% rise time) |
20 ms |
| Z axis maximum user input frequency |
10 Hz |
| Z axis top plate maximum load |
500 grams |
| Z axis top plate stiffness (± 20%) |
3 N/µm |
| Z axis top plate in-plane tilt (typical) |
10 µrad |
| Analog interface (BNC input) |
0.0 to 10.0 Vdc |
| D/A converter resolution |
16-bit |
| Stage interface |
1.5 m cable with DB9 connector |
| Output voltage range |
-15 to +170 V |
| Output current (peak) |
150 mA |
