Tektronix OI1125, Instruction Manual

Page: 26 / 88

Operating Basics
14
OI1125 E/O Transmitter Instruction Manual
Rear Panel Connections and Controls
There are three connectors and one switch on the rear panel of the OI1125 E/O
Transmitter. Use Figure 7 and the following descriptions to connect the
transmitter to your system.
R
Figure 7: OI1125 rear panel
The on/off switch connects the line voltage from the power-in connector to the
power supply in the instrument.
Plug the power cord into this connector. The connector accepts 90-240 VAC,
50-60 Hz, using any of the power cords available for the transmitter. The
connector contains an integral AC power line filter.
This SMA connector accepts external 100 kHz to 10 MHz signals to modulate
the optical output of the internal laser. This input can be used for low frequency
modulation of the laser bias current.
The remote interface allows for remote control of some of the instrument
functions. For example, you can disable the internal laser remotely if someone
enters the room in which the laser is being operated. Pins 1 and 2 provide the
terminals to connect to a normally-closed remote door switch.
All of the front panel conntrols are available from the remote interface using a
combination of TTL control signals for the switches and analog control signals
for the adjustments. Status signals are available from the remote interface that
monitor the modes of operation displayed on the front panel. Some control and
status information for the OI1125 E/O Transmitter is only available from the
remote interface.
See Using the Rear-Panel Remote Interface on page 15 for more information.
On/Off Switch
Power In
Laser Modulator Input
Remote Interface