49013-1297 <90-00034>
P
AGE
5
INSTALLATION
F
ollow these steps to install the 49013 202 Tone Modem
Subassembly:
1. Switch and Straps
Refer to Table A and Fig. 2 for the proper switch and strap
options. Set the switches and straps for the options you want.
F
IG
. 2 - S
WITCH
AND
S
TRAP
L
OCATION
, 49013
T
ABLE
A - S
TRAP
O
PTIONS
OPTION
MODE
Master Modem in Master/Slave system
Slave Modem in Master/Slave system
Single Modem (no Master/Slave) Store straps in
non-operative position or remove.
RCV PAD
RCV Pad IN (input level between 0 and -20 dBm)
RCV Pad OUT (input level between -20 and -40 dBm)
XMT PAD
XMT Pad IN (output adjustable from -20 to -40 dBm)
XMT Pad OUT (output adjustable from -1 to -20 dBm)
INSTALL STRAP
XMT MAS and RCV MAS
XMT SLA and RCV SLA
XMT and RCV open (no straps)
Jumpers parallel to P5 (See Fig. 2)
Jumpers perpendicular to P5 (See Fig. 2)
Jumpers parallel to P5 (See Fig. 2)
Jumpers perpendicular to P5 (See Fig. 2)
Note:
Switch S2 reverses the TXD, RXD, DCD, and RTS leads. Refer
to Fig. 3.
CONTINUED
. . .
UPDATED
NOR
RCV
S2
1
13
P5
1
4
P4
MAS SLA
XMT
RCV
MAS SLA
OUT
IN
IN
U2
U1
1. XMT OUT, RCV IN
2. XMT OUT, RCV OUT
3. XMT IN, RCV IN
4. XMT IN, RCV OUT
-00
-01
*
*
Reset, Factory use only.
