LDTC-LAB datasheet(13/31 Pages) WAVELENGTH

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WIRE TEC/RH & LASER

THERMOELECTRIC COOLER OR

RESISTIVE HEATER

Wire the thermoelectric cooler (TEC) or resistive heater (RH)

between Pins A1 and A2 on the 15+2 D-SUB.

The TEC/RH cannot be connected to the laser case.

TEC- (A2)

TEC+ (A1)

Figure 15. TEC Wiring Diagram

TEC- (A2)

TEC+ (A1)

Figure 16. RH Wiring Diagram

LASER

Wire a laser between Pins 1 (anode) and 9 (cathode). If

connecting a photodiode, wire the photodiode to Pins 4

(anode) and 5 (cathode).

For Type A and B lasers, use the top LDD connector on the

rear panel. For Type C lasers, use the bottom LDD connector.

Additionally, note that the top LDD connector has both Pins 1

and 9 floating with respect to ground, while the bottom LDD

connector has Pin 9 (LDC) grounded.

Using the wrong laser type connector will result in

damage to the laser

Pin 1

Pin 9

Pin 5

Pin 4

Figure 17. Laser Wiring Diagram

POWER ON AND POWER OFF

SEQUENCE

POWERING ON

Press the Power switch on the back panel to the

| position.

Default state upon initial power is that the Dual Monitor Screen

will be visible on the display and neither Enable button will be

lit (indicating no output current).

POWERING OFF

Prior to using the Power switch to shut the LDTC LAB down,

ensure that no output current is flowing from the instrument. If

either of the Enable buttons is lit, press the button to disable

output current. Once all output current is disabled, the rear

Power switch may be pressed to the

O position, powering

down the instrument.

SETTING OPERATING

PARAMETERS

There are three available sets of screens on the LDTC LAB

display. The first visible at startup is a dual-monitor screen,

which displays all of the current and voltage outputs for the

LDTC LAB. The second set of screens allow setting of all

temperature controller operational parameters. The third

set of screens allow setting of all laser driver operational

parameters.

Figure 18. Use these buttons to navigate between sets of

screens on the LDTC LAB.

Left: LD screens

Middle: TC screens

Right: Dual Monitor Screen

Any blue text on the display is editable. To edit, press the

blue text. It will either toggle to a different setting, or become

yellow, indicating that this value can be changed by turning

the adjustment knob on the front panel. Clockwise rotations of

the knob increase the value, while counter-clockwise rotations

decrease the value.

REMOTE OPERATION

The LDTC LAB can be controlled by a remote computer

using the TMC Class Command Set (see the LAB Series

Instrument Command Set) or with a downloadable LabVIEW

Virtual Instrument application (see the Virtual Instrument User

Guide).

The USB port on the rear panel is used for remote control of

the instrument and firmware updates.

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