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www.teamWavelength.com
2
QCL OEM SERIES LOW-NOISE DRIVER
QUICK CONNECT GUIDE
!
To ensure safe operation of the QCL driver, it
is imperative that you determine that the unit
will be operating within the internal heat
dissipation Safe Operating Area (SOA).
Visit the Wavelength Electronics website for the most
accurate, up-to-date, and easy to use SOA calculator:
https://www.teamwavelength.com/support/design-tools/soa-ld-calculator/
Figure 1
shows the front panel of the QCL OEM driver and
the locations of the Power and Enable switches, Analog In
and QCL SMA connectors, and SET and LIMIT trimpots.
01D105409201
E
T
QCL
QCL1500
POWER
ENABL
ON
ON
FAUL
SET
LIMIT
Covered by U.S.
Patents 6,696,887,
6,867,644 and
7,176,755.
ANALOG
Figure 1. QCL Driver Front Panel
Figure 2
shows the wiring diagram for the QCL driver and
external electronics. If you are using the Remote Power
On and Remote Enable functions, refer to
page 11
for
switch configuration instructions.
For setup and configuration, we recommend using a test
load in place of the laser (
Figure 3)
. Recommended test
load for 0 to 1.5 A operation, R
LOAD
= 10 Ω, 50 W, metal
film resistor:
• Wavelength part number QCL TEST LOAD (available
for < 1 A and 1.5 A current ranges)
•
Caddock MP850-10-1%
•
Ohmite TCH35P10R0JE
Recommended test load for 1.5 A to 2 A operation,
R
LOAD
= 5 Ω, 50 W, metal film resistor:
• Wavelength part number QCL TEST LOAD (available
for 1.5 A, and 2 A current ranges)
•
Caddock MP850-5.00-1%
TTL Optional Remote Enable
HI = Enabled; Low = Disabled
Optional Analog Setpoint
(-5 V to +5 V)
+
-
TTL Optional Remote Power On
HI = On; Low = Disabled
DVM
Reserved
Remote Power On –
Remote Power On +
Remote Enable –
Remote
Output Enable Status
Power Status
Overtemp Fault Status
Current Setpoint Monitor
Current Output Monitor
Limit Monitor
Monitor Ground
Analog Input
Analog Input Gnd
V+
V–
PGND
QCL+ (Ground)
QCL–
GND
+5V AUX
ANALOG
SMA
QCL
SMA
QCL
+
+
_
_
POWER
ENABLE
2
2
NOTES
1. The
Remote Power On −
and
Remote Enable −
inputs can be
optically isolated from ground.
2. The SMA connectors are electrically
isolated from the QCL chassis.
3. The 150 kΩ resistor is required in
some circumstances. Refer to the
section on wiring the power supplies.
1
1
V+
V−
14
13
12
11
10
9
8
7
6
5
4
3
2
1
3
2
1
4
3
2
1
150 kΩ
Earth
Ground
3
J5
J4
J1
Figure 2. QCL Wiring Diagram, Revision D
R
LOAD
Pin J5-3, or
QCL SMA Center Pin
Pin J5-4, or
QCL SMA Shield
Figure 3. Test Load
