General Information and Specifications – 7
General Information and Specifications
General Information
This user’s manual for the HA9 Series Extended Range Programmable Optical Attenuator
contains complete operating instructions.
The HA9 Series Extended Range Programmable Optical Attenuator (Figure 1) gives an
extended attenuation range (100 dB) and high resolution (0.01 dB) for testing power meters
and for general test and laboratory work. The linear design of the HA9 attenuator, combined
with built-in calibration and offset functions, allows the user to match the display of the HA9
attenuator to an optical power meter over a wide power range. This combination is useful in
tests requiring control of the absolute optical power into a test device. In addition, a built-in
beam blocking switch allows fast access from any attenuation setting to infinite attenuation
(blocking attenuation is >110 dB).
Figure 1: HA9 Series Extended Range Programmable Attenuator
The standard operating wavelength range of the HA9 attenuator is 1200 to 1700 nm. An
optional wide wavelength range of 750 to 1700 nm with reduced attenuation range is available.
Single-mode HA9 attenuators with an analog option are specifically designed for use in
demanding applications, such as multichannel AM systems and high bit-rate digital pulse code
modulation (PCM) systems.
The HA9 attenuator has an SCPI/HP 8156A compatible command set and can be controlled
from either the front panel keypad or by parallel IEEE 488.1 or serial RS232 interfaces.
LabVIEW
2
drivers are supplied to facilitate remote control. For information on using the
LabVIEW drivers, see the
LabVIEW Instrument Driver for HA1, HA3, HA9, and HA11
Attenuators User’s Manual
(document SD000322).
The optics of the HA9 attenuator are bidirectional and, therefore, either fiber port can be used
as the input.
When the HA9 attenuator is used at high attenuation settings, the output fiber or cable must
be shielded to prevent erroneous readings caused by ambient light pickup.
2
LabVIEW is a registered trademark of National Instruments Corporation.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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