PCX-7420 B Laser Diode Driver
Precision Pulse Control
The PCX-7420 B is an air-cooled, high-powered CW/QCW current source designed to drive diode lasers, bars, and arrays. The pulsed output current is adjustable from 3.0 A to 21.5 A. The pulse width is adjustable from 50 ns to 500 ms, and the rise time is under 25 ns. The pulse repetition rate is selectable from 40 Hz to 100,000 Hz when using the internal pulse source, and from single-shot to 1 MHz when using an external source. The PX-7420 B provides both QCW (pulsed) and CW (DC) outputs. It can serve as a CW driver at currents from 3.0 A to 5.8 A, and as a pulsed/QCW driver at currents from 3.0 A to 21.5 A. Furthermore, the output may be biased to any CW current from 0.050 A to 5.8 A, then pulsed above this bias current up to 15.7 A maximum. A new feature allows the bias current to be pulsed and triggered independently from the main current.
Ease of Setup and Operation
The PCX-7420 B may be operated through its intuitive front panel controls. The OLED display provides immediate visual confirmation of all operating parameters, including bias and pulsed current set points, internal trigger pulse width, internal trigger frequency, and error/fault messages.
Complete System Integration
For automated applications, complete control of the driver is provided through RS-232, and USB computer interfaces. Up to five system configurations may be stored in internal non-volatile memory, providing instant recall of frequently-used configurations.
Low Inductance Output Cable
Connection to the laser diode is made through an innovative rear panel, low-impedance twisted pair cable designed to preserve the fidelity of high-speed, large-amplitude current pulses. The front panel of the PCX-7420 B has an interlock key. When the key is off, the output is disabled. To enable, the key must be on and the system enable must be made, either manually or through computer interface.
Output Protection
The PCX-7420 B features advanced circuitry to protect both the diode and driver. At turn-on, and at any time the output is not enabled, the PCX-7420 B’s output is electronically shorted to ground, ensuring that no current flows through the diode. Safety features include a separate enable key-switch and a remote interlock.
Ordering Information
PCX-7420 B Precision Pulsed Current Source
6100-0119 Output Cable, requires 2
6045-0134 Laser Output PCBA
PCA-9410 BNC Shorting Connector
Each PCX-7420 B is delivered with 2 output twisted pair cables, 1 Laser Output PCBA, and a BNC shorting connector.
Pulse Amplitude
Main current output range
3.0 A to 15.7 A
Setpoint resolution
1 mA
Compliance voltage
24 V1
Bias Amplitude
Bias current output range
50 mA to 5.8 A
Setpoint bias resolution
1 mA
Internal Trigger
Frequency range
40 Hz to 100 kHz
Frequency resolution
40 Hz to 300 Hz: 1 Hz
300 Hz to 5000 Hz: 100 Hz
5 kHz to 100 kHz: 1000 Hz
Pulse width range
100 ns to 500 ms
Pulse width resolution
40 Hz to 300 Hz: 6400 ns
300 Hz to 5000 Hz: 1600 ns
5 kHz to 100 kHz: 100 ns
Rise time
< 25 ns
Polarity
Positive
Trigger Sync Output
Termination
50 Ω
Connector
BNC
Output voltage levels
0 V to 2.7 V
External Trigger
Frequency range
≤ 1 MHz
Minimum pulse width
50 ns
Maximum pulse width
100% duty cycle, up to 250 W
Termination
50 Ω or 10000 Ω
Connector
BNC
Input voltage levels
0 V to 5.0 V
High = output to load, Low = no output to load
Computer Interface
RS232, USB
USB driver support
Windows 7—10, Windows XP, Linux, and MAC OS X
General
Power requirements
47 Hz to 63 Hz
100 V AC to 120 V AC ± 10%
220 V AC to 240 V AC ± 10%
AC connector type
NEMA C-14
Size (H x W x D)
8.9 cm x 28.5 cm x 53.4 cm
Standard with rack mount ears
Requires 2U spacer
33.6 cm wide at ears
Weight
8.4 kg
Operating temperature
15° C to 40° C
Air cooled, flow from front to the rear of unit
Notes
Warranty: One year, parts and labor, on defects in materials and workmanship.
The PCX-7420 B current source meets or exceeds these specifications. All specifications are measured with a low inductance twisted pair interconnect cable to a load. Specifications information subject to change without notice.
1 Laser diode drivers are current sources. The compliance voltage is the maximum voltage available to maintain the programmed current.
Laser Output PCBA
描述 [描述] PCX-7420 B是一种气冷、大功率连续波/QCW电流源,设计用于驱动二极管激光器、棒和阵列。