CANOGA PERKINS 2270 Fiber Optic Modem - Manual (Page 46)

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Canoga Perkins
3.10.2 Model -TW8
The signaling used on this interface is Mil-Std 188-114C. Four TwinAx connectors (BJ-77 type) are
used for the physical connection (see Figure 3-12).
A switch is provided to select whether the fourth TwinAx (SCT/SCTE) is to be used as an output
(SCT) or as an input (SCTE). By setting the switch to the SCT position, the port becomes an
output providing the clock to the connected device. When set for SCTE, the port becomes an input
and will accept a clock from the connected device.
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.
3.10.3 Model -T22
The signaling used on this interface is RS-422A. Five TwinAx connectors (BJ-77 type) are used for
the physical connections (see Figure 3-13).
3.10.4 Model -T88
The signaling used on this interface is Mil-Std 188-114C. Five TwinAx connectors (BJ-77 type) are
used for the physical connections (see Figure 3-13).
3.10.5 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 connections (refer to Table 3-P).
3.10.6 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 connections (refer to Table 3-P).
Figure 3-12.
BNC and Four
TwinAx Connec-
tors
(BJ-77 Type)