7410F IFL Installation and User’s Guide
Appendix IV 7100M Chassis
Foxcom Proprietary Information
Document No. 93-006-01-A
49
9.2.2. Setting Up the Receiver
1. Place the 7410FR Receiver in the 7100M Chassis. The operating
base plate temperature must be between -10
°
C to 55
°
C.
2. Apply AC power to the chassis. The Power Supply’s LED should
be lit.
3. Mount the 7410FR into the chassis.
4. On the rear panel connect the fiberoptic cable to the Optical
Connector. The Opt. LED should be lit.
5. Using an optical power meter, measure the optical power coming to
the Receiver from the fiberoptic cable. The power levels of the
Receiver should be the power level measured at the Transmitter minus
the fiber loss
16
.
Alternatively, use a DVM to measure the voltage at:
•
pins J10-P7 through J10-P12 for the slot being measured (Refer
to Table 14, page 61 for details regarding J10 pinouts) (7100M
Rackmount). The voltage level should be 1V for each 1 mW
measured at the Receiver input.
•
at pin #5 of the 9 pin connector (standalone)
6. On the rear panel, connect the coax cable to the RF Output
Connector.
Note
If either LED is not lit, refer to Troubleshooting on page 36.
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Fiber loss is defined as:
(0.4 dB/km x length (km) of the fiberoptic cable) + (0.5 dB x number of connectors).
For example if a link was 10 kilometers long and had two connectors the loss would be:
(0.4 dB/km x 10 km) + (0.5 dB x 2) = 5.0 dB.
