150
Installation
Optical Output
coupling ratio, and its wavelength d e pendence, for the Mon ito r
Output yourself.

A.7 Optical Output

CAUTION The attenuator is supplied with either a straight contact connector or
an angled con tact connect or (Option 20 1). Make sur e that you only use
the correct cables with your chosen output. See “Connector Interfaces
and Other Accessories” on page 158 for further details on connector
interfaces and accessories.

Disabling the Optical Output

If the optical output is enabled (that is, the green LED is lit), you
can disable it by pressing ENB/DIS.
NOTE Depending on the attenuation setting, it can take up to 3 seconds for the
output to be disabled (typically delay, 1 second).

A.8 GPIB Interface

You can connect your GPIB interface into a star network, a linear
network, or a combination star and linear network. The limitations
imposed on this netwo rk ar e as follows:
•The total cable length cannot exceed 20 meters
•The maximum cable length per device is 2 meters
•No more than 15 devices may be interconnected on one bus.