INTRODUCTION AND SPECIFICATIONS
Installing the LDC-3700B
2 LDC-3700 Series
CHAPTER 1
Installing the LDC-3700B
This section provides information about the necessary requirements to install the LDC−3700B and
how to begin operating the instrument.
Grounding Requirements
The LDC−3700B Laser Diode Controller comes with a three conductor AC power cable. The power
cable must be plugged into an approved three−contact electrical outlet or used with a three−contact
to two−contact adapter with the grounding wire connected to an electrical ground (safety ground).
The LDC−3700B supplied power cable meets all applicable national safety standards.
AC Line Power Requirements
You can operate the LDC−3700B Series Controllers from a single phase power source delivering
nominal line voltages of 100, 120, 220, 230−240 VAC (all values RMS) from 50 to 60 Hz. The line
power voltage can vary +10%. Maximum power consumption is 360 VA (Volt−Amps). The
instrument’s operational voltage is configured at the factory and cannot be changed. However,
check to make sure the voltage printed on the back panel of the instrument matches the power−line
voltage in your area.
Before connecting the LDC−3700B Laser Diode Controller to a power source, verify that
the AC power source matches the setting of the LDC−3700B’s voltage printed on the rear
panel of the instrument.
To avoid electrical shock hazard, connect the instrument to properly earth−grounded
electrical receptacles only. Failure to observe this precaution can result in severe injury
or death.
GPIB Connector
The IEEE 488.2 GPIB interface connector is located on the rear panel, directly above the power
input module and fuse (See Figure 1.2 on page 4). Attach the GPIB cable to the 24−pin connector
located on the rear panel. The connector is tapered to ensure proper orientation. Finger tighten the
two screws on the cable connector.
A total of 15 devices can be connected together on the same GPIB interface bus. The cables have
single male/female connectors on each end so that several cables can be stacked. This allows
more than one cable to be attached to any one device. However, the maximum length of the GPIB
cables must not exceed 20 meters (65 feet) total, or 2 meters (6.5 feet) per device.
The GPIB Address
The talk and listen addresses on the LDC−3700B Series Laser Diode Controller are identical. This
GPIB address is read locally by pressing the GPIB LOCAL switch with the address displayed on the
"TEC" display. The controller comes from the factory configured with the GPIB address set to zero.
You can change the LDC−3700B’s GPIB address locally (via front panel). A procedure for changing
the address can be found in the section Changing the GPIB Address on page 39.
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