16
DLC170 Function Modules Installation and Operations Manual
DLC170 Function Modules
Note:
When handling fiber optic cables, adhere to the standard safety practices for handling a Class 1
laser product (see
“DLC170 Laser Warnings” section on page 2
).
This section contains the following topics:
•
Cabling the Audio Connections (page 16)
•
Cabling the Electrical Video Connections (page 16)
•
Cabling the Optical Video Connections (page 16)
Cabling the Audio Connections
Use the cable mounting screws on the audio connector (see
) to secure the audio cable connections
described in this section.
Note:
(DLC170DA only) When you provision the DLC170DA to provide digital AES-3 audio, only two of
the four outputs are used; stereo pair #1 is supplied to channel A and AES stereo pair #2 is
supplied to channel C.
Cabling the Electrical Video Connections
To connect to the BNC connector on the DLC170AD and DLC170DA, use a high quality 75 Ohm precision video
coax cable, such as Belden 1694A or Belden 8281 cable.
Cabling the Optical Video Connections
Use a single mode fiber when connecting to the LC connectors of the DLC170AD and DLC170DA SFPs.
To cable the optical connections, perform the following tasks:
1. Remove the SFP safety plug that protects the TX and RX ports. Cover any unused optical port to keep the
port clean.
2. Cable the optical connections as follows:
•
Receive signal—Connect the fiber optic cable between the source device’s optical transmit
connector and the SFP receive optical connector (RX) on the DLC170DA.
•
Transmit signal—Connect the fiber optic cable between the destination device’s optical receive
connector and the SFP transmit optical connector (TX) on the DLC170AD or DLC170DA.
Adjusting the DLC170AD Video Gain and Equalization
The DLC170AD allows you to adjust the video gain and equalization of the video signal using the
potentiometers located on the front panel (see
) as follows:
•
Video Equalization (EQ)—Equalizes the input signal coming into the VIDEO INPUT BNC connector.
The cable should be a Belden 8281, Belden 1694A or equivalent, which can be equalized for up to 300
m (984 ft). When the VIDEO EQ potentiometer is turned full counterclockwise, the gain is flat (i.e. there
is no equalization).
•
Video Level (LVL)—Adjusts the input level of an analog video signal by ±3 dB for 100 IRE.
