IBM 3174 Introduction

3174 Model 62R
3174
Model 53R
The 3174 Model 62R is a medium-cluster controller designed for remote
operations~ It contains a Type 2 Communication Adapter providing X.21 interface
(CCITT V.11) for SNA/SDLC or X.25 remote link attachment. It has 2MB of base
storage and one 5-1/4-inch, 2.4MB, high-capacity diskette drive.
If the controller
has one diskette drive and uses devices that require downstream load microcode,
a second diskette
drive or fixed disk must be installed. A nine-port terminal
adapter supports nine terminals directly
or sixteen 3270 terminals and eight ASCII
terminals through one or two IBM 3299 Terminal Multiplexers.
Customizing is performed with a control unit terminal attached to port
0 of the 3174.
Any terminal can be attached to port 0 at other times. The Model 62R supports full
keyboard utilities.
Subsystem online tests and problem determination are performed through a
control unit terminal attached to any port
or multiplexer without interrupting other
terminals attached to the
3174; Offline tests are performed through the 3174
control panel.
The customer can install the following features on the Model
62R:
Second diskette drive
Token-Ring Network Gateway feature
Asynchronous Emulation Adapter
Type 3A Communication Adapter
20MB Fixed Disk Drive
Storage Expansion
Concurrent Communication Adapter.
The
3174 Model 53R connects to the IBM Token-Ring Network. It contains a Type 3
Communication Adapter that provides the ability for the controller to operate on an
IBM Token-Ring at 4Mbps. The Model 53R has 1 MB base storage and one
5-1/4-inch, 1.2MB, high-capacity diskette drive.
If the controller has one diskette
drive and uses devices that require downstream load microcode, a second diskette
drive or fixed disk must be installed. A nine-port terminal adapter supports nine
terminals directly
or sixteen 3270 terminals and eight ASCII terminals through one
or two IBM 3299 Terminal Multiplexers.
Customizing is performed with a control unit terminal attached to port 0 of the 3174.
Any terminal can be attached to port 0 at other times. The Model 53R supports full
keyboard utilities.
Subsystem online tests and problem determination are performed through a
control unit terminal attached to any port
or multiplexer without interruptin'g other
terminals attached to the
3174. Offline tests are performed through the 3174
control panel.
The customer can install the following features on this model:
Second diskette drive
20MB Fixed Disk Drive
Storage Expansion
Single Link Multi-Host Support.
Chapter 3. Models of the 3174 Establishment Controller 3-9

IBM 3174 Specifications

General

Brand	IBM
Model	3174
Category	Controller
Language	English