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STARLINE 5
SG2-DRT-3X Installation Sheet
To install the SG2-DRT-3X in the SG2440 node:
1 If present, remove any analog transmitter that occupies the optical XMTR B or A positions,
as illustrated in Figure 5, and then install the double-wide SG2-DRT-3X:
Figure 5
SG2440 lid
Optical XMTR A
Optical XMTR B
Pad DRT2
TP DRT2
Pad DRT1
Pad XMTR B
TP DRT1
TP XMTR B
Pad XMTR A
TP XMTR A
RP1
RP3
RP2
RP4
DRT1
DRT2
Return configuration
location
2 Replace the XMTR B 15 dB pad with a 5 dB pad.
3 Install the SG2-DRT-3X board in the return configuration location on the lid board as
illustrated in Figure 5.
4 Ensure that the PIC cable is properly connected to the lid and E-pack connectors.
5 Install the two RF cables from DRT MCX 1 and DRT MCX 2 to RF INPUT A and RF INPUT B
respectively on top of the SG2-DRT-3X.
6 Confirm that the green LED (ON), located on the top panel of the SG2-DRT-3X, is
illuminated to confirm enable status. A delay of approximately 10 seconds before
illumination is normal.
7 Review return-path system levels:
Each input of the SG2-DRT-3X is configured to drive the laser to the recommended level of
+15 dBmV.
Use TP DRT1 and TP DRT2 (Figure 5) to monitor the levels of the segmented ports. Pad
DRT1 and pad DRT2 are used to adjust the level into the transmitter.
Use TP XMTR B to monitor the levels of the two combined ports. Pad XMTR B is used to
adjust the level into the transmitter.