IBM 3274 User Manual page 42
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Also See for 3274:
- Planning, setup, and customizing manual (147 pages) ,
- Manual (298 pages) ,
- User manual (48 pages)
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Description
D
On/Off switch:
m
=
On;
101
=
Off.
II
On indicator: Indicates the 3274 is powered on.
EI
IML (initial Machine Load) pushbutton: Pressing and holding causes a basic
assurance test to run. When the pushbutton is released, IML tests start. At
completion, the machine is loaded. With the Integrated Modem feature, the
integrated modem self·test requires a power-on reset to run.
a
Alt IML Address switch:
•
Position 1: Holding, while momentarily pressing the IML push-
button, bypasses the IML tests and loads the machine directly.
Use only after normal IML fails.
•
Position 2: Holding, while pressing the IML pushbutton, causes
remote interface tests to run.
8 4 2 1 indicators: These light while the IML pushbutton is held. During
IML, they follow the test sequence. At completion, they all go out. During
operation, they indicate operational status.
D
Line Speed switch: I n the Pri position, the modem operates at normal speed;
in the Sec position, the modem operates at half-speed.
II
Transmit Level Attenuation switches (Switched Network - U.S. and Canada
only): These four switches provide 0 to -15 dB attenuation of the transmit
level in 1-dB increments. See the chart below for the various switch settings.
Transmit Level Switches
dBM
Level
-1dB
-2dB
-4dB
-adB
0
Off
Off
Off
Off
-
1
On
Off
Off
Off
-
2
Off
On
Off
Off
-
3
On
On
Off
Off
-
4
Off
Off
On
Off
-
5
On
Off
On
Off
-
6
Off
On
On
Off
-
7
On
On
On
Off
-
8
Off
Off
Off
On
-
9
On
Off
Off
On
-10
Off
On
Off
On
- 11
On
On
Off
On
- 12
Off
Off
On
On
- 13
On
Off
On
On
- 14
Off
On
On
On
- 15
On
On
On
On
Encrypt/Decrypt key switch: In the horizontal position, allows a new master
key code to be entered.
Encrypt/Decrypt battery: Maintains the master key code in the 3274 when
power is off.
Figure
1-14 (Part 2 of 2). 3274 Model SIC Operator Panel with the
1200-bps Integrated Modem Feature and with
either (1) the Switched Line with Manual
Answer Feature or (2) the Nonswitched Line
with SNBU and Manual Answer Feature; and
with the Encrypt/Decrypt Feature
Section
1.
Operator Information
1-31
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