IBM 3270 Manual page 44

Version 2 Cable
D
D
D
D
Connect the cable plug
D
attached to the long communication cable labeled MODEM
to the socket
fJ
of the 0.4-metre ( 15-in.) communication cable. Tighten the
thumbscrews of cable plug
D
securely with your fingers.
Set the TEST/OPER switch
IJ
to the OPER position.
Connect the cable plug
D
on the other end of the 0.4-metre ( 15-in.) cable to the
modem.
Label-MODEM
II
Long Cable
0.4 meter (15 in.) Cable
To United
Kingdom
Datel Modem
33