CANOGA PERKINS 2240 Fiber Optic Modem - Manual (Page 88)

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Canoga Perkins
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.
Table 4-T.
Model
Characteristics
TW RS-422A 4 TwinAx Figure 4-16 <100 Ohms 100 Ohms ± 10%
TW8 Mil-Std 4 TwinAx Figure 4-16 <100 Ohms 78 Ohms ± 10%
118-114C
T22 RS-422A 5 TwinAx Figure 4-17 <100 Ohms 100 Ohms ± 10%
T88 Mil-Std 5 TwinAx Figure 4-17 <100 Ohms 78 Ohms ± 10%
188-114C
D22 RS-422A DC-37 Table 4-V <100 Ohms 100 Ohms ± 10%
D88 Mil-Std DC-37 Table 4-V <100 Ohms 124 Ohms ± 10%
188-114C
Model Electrical Physical Physical Driver Termination
Interface Interface Interface Impedance Impedance
Type Type Figure /
Table