Comtech EF Data SMS-301 - Manual (Page 98)

SDM-300/-300A System Installation SMS-301 Redundancy Switch
B–4 Rev. 3
4. Connect MOD side of 1:1 switch as follows:
a. Connect “TX IF” connector (J4) to IF IN connector (J7) on the rear
panel of the up converter, using Cable PL/0813-X.
b. Connect the “A” connector (J5) to the prime modulator TX IF OUT
connector (CP1), using Cable PL/0813-X.
c. Connect the “B” connector (J6) to the backup modulator TX IF OUT
connector (CP1), using Cable PL/0813-X.
5. Connect DEMOD side of 1:1 switch as follows:
a. Connect the “B” connector (J7) to the backup modulator “RX IF IN”
connector (CP2), using Cable PL/0813-X.
b. Connect “RX IF” connector (J8) to the down converter ‘IF OUT”
connector (J7), using Cable PL/0813-X.
c. Connect the “A” connector (J9) to the prime modulator “RX IF IN”
connector (CP2), using Cable PL/0813-X.
6. Connect AC power to AC1 (J11) and AC2 (J12) with power cables PL/6051-1.
a. If two AC power sources are available, connect AC1 and the prime
modulator to one AC source and AC2 and the backup modulator to the
other AC source.
b. If the DC power option is used, connect the DC voltage to the terminal
blocks is a similar manner.