QCL-LAB161 datasheet(6/24 Pages) WAVELENGTH

6 / 24 page

PIN DESCRIPTIONS

QCL D-SUB

Figure 5. Female 9-Pin D-SUB

Table 1. QCL D-SUB Pin-Out

DESCRIPTION

1, 2

Passive interlock pins (must be shorted to enable

current)

Chassis ground

Not used

5 *

QCL- (negative)

Not used

9 *

QCL+ (positive)

SHELL

Chassis ground

* NOTE: Use Pins 5 and 9 for current to the QCL.

QCL SMA

QCL- (negative)

QCL+ (ground)

Figure 6. SMA Pin-Out

QCL POLARITY

-V

Pin 9 QCL +

or SMA Outer Ring

Pin 5 QCL -

or SMA Center Pin

QCL Driver

Current Sink

QCL

Figure 7. QCL Polarity Diagram

MONITOR D-SUB

Figure 8. Male 9-Pin D-SUB

Table 2. Monitor D-SUB Pin-Out

DESCRIPTION

Alignment LED (+5 V) can source 250 mA

Alignment LED ground

QCL current enabled indicator (+5 V TTL)

high = disabled

low, ground = enabled

QCL current enabled indicator ground

Not used

Analog setpoint monitor

Analog monitor ground

Analog output current monitor

Analog monitor ground

BNC PINS

ACTIVE SIGNAL

GROUND

Figure 9. BNC Pins

TRANSFER FUNCTIONS BY MODEL

External modulation input, setpoint monitor, and analog

current monitor transfer functions:

QCL500 LAB:

0.1 A / V.

QCL1000 LAB:

0.2 A / V.

QCL1500 LAB:

0.3 A / V.

QCL2000 LAB:

0.4 A / V.

The input range is always -5 V to +5 V.

ACTIVE INTERLOCK BNC

Ground the center pin to the outer shell to override the interlock

and allow the current to flow to the QCL. If an external circuit

won’t be used, a 50 Ω or 75 Ω terminator is acceptable.

TRIGGER BNC

See Additional Capabilities on

page 16.

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