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APPENDIX D
PATTON ELECTRONICS MODEL 3004-ECB/V.36
INTERFACE PIN ASSIGNMENT
RS-449 Interface Pin Description
(DB-37 Connector)
Pin #
Signal
1
FG (Frame Ground)
4
TD (Transmit Data-A)
5
TC (Transmit Timing-A)
6
RD (Receive Data-A)
7
RTS (Request to Send-A)
8
RC (Receive Timing-A)
9
CTS (Clear to Send-A)
11
DM (Data Mode-A) (DSR-A)
12
TR (Terminal Ready-A) (DTR-A)
13
RR (Receiver Ready-A) (CD-A)
17
XTC (External Transmit Clock-A)
19 SGND (Signal Ground)
20
SGND (Signal Ground)
22
TD/ (Transmit Data-B)
23
TC/ (Transmit Timing-B)
24
RD (Receive Data-B)
25
RTS/ (Request to Send-B)
26
RC/ (Receive Timing-B)
27
CTS/ (Clear to Send-B)
37
SGND (Signal Ground)
29
DM (Data Mode-B) (DSR-B)
30
TR (Terminal Ready-B) (DTR-B)
31
RR (Receiver Ready-B) (CD-B)
35
XTC/ (External Transmit Clock-B)
APPENDIX E
PATTON ELECTRONICS MODEL 3004-ECB/X.21
INTERFACE PIN ASSIGNMENT
X.21 Interface Pin Description
(DB-15 Connector)
Pin #
Signal
1
FG (Frame Ground)
2
TD (Transmit Data-A)
3
C (Control-A)
4
R (Receive-A)
5
I (Indication-A)
6
S (Signal Timing-A)
8
SGND (Signal Ground)
9
T/ (Transmit-B)
10
C/ (Control-B)
11
R/ (Receive-B)
12
I/ (Indication-B)
13
S/ (Signal Timing-B)
11
12