B Rs-449 Pinouts - Canoga Perkins 2240 User Manual

Canoga Perkins
Pin
Number
A/B
1
4/22
5/23
6/24
7/25
8/26
9/27
10
11/29
12/30
13/31
14
15
17/35
18
19
20
33
34
37
2/36*
* The extra clock is an enhancement added to -422 interfaces. Any -422
interface card outfitted with this capability can be identified via the lack
of the W16 / W15 BAL_CTRL jumper. The W16 / W15 jumper was
never described in the manual, so do not try to find a reference to it in the
manual.
46
RS-449
PIN Name
(abbrev)
SHLD shield
SD send data
ST send timing
RD receive data
RS request to send
RT receive timing
CS clear to send
LL local loopback
DM data mode
TR terminal ready
RR receiver ready
RL remote loopback
IC incoming call
TT terminal timing
TM test mode
SG signal ground
RC receive common
SQ signal quality
NS new signal
SC send common
N/A extra clock for
receive data
Direction
(full name)
-
to modem
from modem
from modem
to modem
from modem
from modem
to modem
from modem
to modem
from modem
to modem
from modem
to modem
from modem
-
- (tied to SG)
from modem
to modem
to modem
to modem
Table 4-B.
RS-449 Pinouts