Miscellaneous:
Operating Temp. Range ........... -20 to +60 degrees C
Operating Power ...................... 9-24 Volts AC or DC@5 watts (max.)
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Signal Connectors ................................ HD-15F
RGB Processing ................................... 24 bits, no compression or
scaling
Optical:
Operating Wavelength ......................... 1310 nm; MM or SM
Optical Fiber ........................................ 62.5/125 microns MM,
50/125 microns MM or
8-10/125 microns SM
Optical Connector ................................ ST
Class I Laser Product complies with FDA performance standard for
laser products, Title 21, Code of Federal Regulations, Sub-Chapter J
Audio:
Number of Audio Channels .................. 2, unbalanced
Frequency Response ............................. +0/-0.5 dB, 20 Hz to 20 kHz
Input Impedance ................................... >24 k Ohms
Output Impedance ................................ <1 Ohm
Maximum Audio Level ........................ +10 dBu
THD+N ................................................. 0.005%; 20 Hz - 20 kHz
SNR (A-Weighted) ............................... 95 dB
Channel Phase Differential ................... +/-0.1
o
Crosstalk ............................................... Min. 95 dB (1 kHz)
Signal Connectors ................................ 3.5mm Stereo jack
Audio to Video Diff. Delay (skew) ..... <300 uS
OPERATING POINTERS AND TROUBLESHOOTING
Optical Fiber:
The 7220 Series is available in versions that operate with most mul-
timode (MM) and single mode (SM) optical fibers. Be certain that the
correct size fiber is being used for the particular transmitter/receiver
combination.
Also, remember to check the attenuation and bandwidth of the fiber
optic cable. The system will only operate properly if these specifica-
tions fall within the range of the system’s loss budget.
RECEIVER (continued):
Audio:
OFF: Indicates no audio detected over fiber and, as a result,
no active audio detected by the receiver unit.
BLINKING: Indicates audio detected over fiber and, as a
result, active audio detected by the receiver unit.
Alarm:
ON: Loss of video or optical signal (rack card only).
Troubleshooting:
Multimode fiber optic cable contains an optical fiber with a light
carrying “core” that is only .0025 inches (62.5 microns) in diameter.
Single mode fiber optic cable has an even smaller “core,” only .00032
to .0004 inches (8-10 microns). This is smaller than a human hair! There-
fore, any minute particles of dirt or dust can easily block the fiber from
accepting or radiating light. To prevent this from happening, always
use the provided dust caps whenever optical connectors are exposed to
air. It is also a good idea to gently clean the tip of an optical connector
with a lint-free cloth moistened with alcohol whenever dust is suspected.
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