Codan MT-3 - Channel and Bank Select Jumpers

TN500 SR-39-1 Subrack
MT-3/4 Radio Systems
TECHNICAL NOTES
Page 4 of 4
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TN500, REV 5-0-0, © Aug 2016
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Channel and Bank Select
MT-4E radio modules are capable of 16 channel operation in 2 banks (32 channels total). The 16 channels are
controlled via four CSEL signal lines connected to each receiver and transmitter module. The CSEL signal lines
are set as either a 0 (0 Vdc) or a 1 (+9.5 Vdc).
JU48 TX A Channel select lines +9.5 V pullup enable JU49 RX A Channel select lines +9.5 V pullup enable
JU50 TX A CSEL 0 JU51 TX A CSEL 1
JU52 TX A CSEL 2 JU53 TX A CSEL 3
JU54 TX A Bank select A = Bank A, B = Bank B JU55 RX A CSEL 0
JU56 RX A CSEL 1 JU57 RX A CSEL 2
JU58 RX A CSEL 3 JU59 RX A Bank select A = Bank A, B = Bank B
JU60 TX B Channel select lines +9.5 V pullup enable JU61 RX B Channel select lines +9.5 V pullup enable
JU62 TX B CSEL 0 JU63 TX B CSEL 1
JU64 TX B CSEL 2 JU65 TX B CSEL 3
JU66 TX B Bank select A = Bank A, B = Bank B JU67 RX B CSEL 0
JU68 RX B CSEL 1 JU69 RX B CSEL 2
JU70 RX B CSEL 3 JU71 RX B Bank select A = Bank A, B = Bank B
Figure 5: Rear View of Subrack
+9.5 Vdc REGULATED
POWER INPUT /
OUTPUT
(NOT TYPICALLY USED)
DB25
CONNECTOR
FOR CI-DSP-223
AND CI-IP-223
POWER INPUT
+10 to +17 Vdc
+13.8 Vdc NOMINAL
15 AMP FAST
BLOW FUSE
(5604-5GAGC150)
+13.8 Vdc LINE
TRANSIENT SUPPRESSOR
(2007-1N637800) &
REVERSE VOLTAGE DIODE
(2001-MR751000)
+9.5 Vdc LINE
TRANSIENT SUPPRESSOR
(2007-1N637500) &
REVERSE VOLTAGE DIODE
(2001-MR751000)
ANTENNA RELAY
& RX MUTE
ACTIVATION
JUMPERS
A SIDE
BANK AND CHANNEL
SELECT AND PULL-UP
JUMPERS
B SIDE
BANK AND CHANNEL
SELECT & PULL-UP
JUMPERS
DB25
JUMPERS
DB25
CONNECTOR
FOR CI-RC-4M-G2