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T-Cube Piezo Driver
4.4.3 External Inputs
The T-Cube piezo driver has 3 external inputs whose function depends on whether
the cube is used in open or closed loop mode. In open loop mode, the selected input
drives the high voltage amplifier directly, whilst in closed loop mode the selected input
receives the feedback position signal from the external position reader (such as the
TSG001 Strain Gauge Reader).
Of these 3 external inputs, Ch 1 and Ch 2 are routed via the TCH002 T-cube controller
hub, allowing the TPZ001 to be controlled by other cubes on the hub. For example, a
combination of a TPZ001 unit with a TSG001 Strain Gauge Reader allows closed loop
operation, or two TPZ001 units with a TNA001 NanoTrak cube allows optical beam
alignment. As the hub also provides power to the units and USB communications as
well as signal routing, there is no need for separate USB leads, power supplies or
external cable connection between units.
Fig. 4.2 Controller Hub Feedback Channels
If
Channel 1
is selected, the feedback signal runs through all the bays - see Fig. 4.2.
This setting is useful in applications where a master cube is controlling several slave
cubes.
If
Channel 2
is selected, the feedback signals run between adjacent pairs of T-Cube
bays (i.e. 1 and 2, 3 and 4, 5 and 6) - see Fig. 4.2. This setting is useful when several
pairs of cubes are being used on the same hub.
The third input is the EXT IN SMA connector on the rear panel, which can be used if
a hub is not available or the controlling signal source is not a member of the T-cube
family of products. For example, even if a hub is not available, the combination of a
TPZ001 unit with a TSG001 Strain Gauge Reader described above can still be used
for closed loop control but in this case the TSG001 MONITOR output must be
connected to the TPZ001 EXT IN input using an external SMA to SMA cable.
Note
When the TPZ001 is used in closed loop mode with the TSG001 Strain Gauge
Reader, it is not possible to modulate the TPZ001.
Channel 1
Channel 2
Channel 2
Channel 2
Bay 1
Bay 2
Bay 3
Bay 4
Bay 5
Bay 6
Summary of Contents for TPZ001
Page 1: ...TPZ001 Piezo Driver User Guide Original Instructions...
Page 56: ...Appendix E 56 HA0143T Rev 12K Sept 2015 E 3 CE Certificate...
Page 57: ...57 T Cube Piezo Driver...
Page 58: ...58...
Page 60: ...60 www thorlabs com...
