3 model t22, 4 model t88, 5 model d22 – CANOGA PERKINS 2240 Fiber Optic Modem User Manual

Page 81: 6 model d88, Model t22, Model t88, Model d22, Model d88, Figure 4-16, Figure 4-16)

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Chapter 4 Data Interfaces

High-Speed RS-422/Mil-Std 188-114C Interfaces

81

SCT should be selected if the modem is set for Internal or Slave Clock mode.

SCTE should be selected if the modem is set for External Clock mode.

NOTE: The SCT output cannot be returned on the SCTE leads to eliminate

propagation delay problems with this interface.

Figure 4-16 Four TwinAx Connectors (BJ-77, 3-Lug)

4.10.3 Model T22

The signaling used on this interface is RS-422A. Five TwinAx connectors (BJ-77, 3-lug) are used
for the physical connection (see Figure 4-17).

4.10.4 Model T88

The signaling used on this interface is Mil-Std 188-114C. Five TwinAx connectors (BJ-77, 3-lug)
are used for the physical connection (see Figure 4-17).

4.10.5 Model D22

The signaling used on this interface is RS-422A. A standard 37-position, D-type female
connector (DC-37) is used as the physical connection (refer to Table 4-23).

4.10.6 Model D88

The signaling used on this interface is Mil-Std 188-114C. A standard 37-position, D-type female
connector (DC-37) is used as the physical connection (refer to Table 4-23).

Receiver Clock

Received Data

Transmitted Data

Transmitter Clock

External
Transmitter Clock

or

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