USER
MANUAL
MODEL 1017 and
1017S
Mac Short Range
Modem with
Transformer Isolation
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
Part# 07M1017-A
Doc# 082022UA
Revised 3/25/94
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3.0 INSTALLATION
RJ-11
SIGNAL
RJ-45
SIGNAL
The Model 1017 is easy to install. This section tells you how to
properly connect the Model 1017 to the twisted pair interface and Mac
phone port, and how to operate the Model 1017.
1----------------GND†
2----------------RCV-
3----------------XMT+
4----------------XMT-
5----------------RCV+
6----------------GND†
1----------------N/C
2----------------GND†
3----------------RCV-
4----------------XMT+
5----------------XMT-
6----------------RCV+
7----------------GND†
8----------------N/C
3.1 CONNECTION TO THE TWISTED PAIR INTERFACE
The Model 1017 supports data-only communication between a
Mac and another Mac or another serial device. There are two require-
ments for installation:
When connecting two Model 1017s, it is necessary to use a
“crossover” cable. The diagram below shows how a crossover cable
should be constructed for an environment where both Model 1017s
use a 4-wire R-11 connector. Similar logic should be followed when
using an RJ-45 connector or a combination of the two.
1. These units work in pairs. You must have one Model 1017 (or a
compatible model) at each end of the two twisted pair cable.
2. To function properly, the Model 1017's modular jacks must be con-
nected to two twisted pairs of metallic wire. The pairs must be
unconditioned, dry metallic wire, between 19 and 26 AWG (the
higher number gauges may limit distance). Standard dial-up tele-
phone circuits or leased circuits that run through signal equaliza-
tion equipment are not acceptable.
SIGNAL PIN# COLOR‡
COLOR
PIN# SIGNAL
GND†
RCV-
XMT+
XMT-
RCV+
GND†
1
2
3
4
5
6
Blue --------------------White
6
4
5
2
3
1
GND†
XMT-
RCV+
RCV-
XMT+
GND†
Yellow------------------Red
Green ------------------Black
Red---------------------Yellow
Black -------------------Green
White-------------------Blue
For your convenience, the Model 1017 is available with two differ-
ent twisted pair interfaces: an RJ-11 jack or an RJ-45 jack.
3.1.1 TWISTED PAIR CONNECTION USING RJ-11 OR RJ-45
†Connection to ground is optional
‡Standard color codes—yours may be different
The Model 1017's RJ-11 and RJ-45 connectors on the twisted pair
interface are pre-wired for a standard TELCO wiring environment (see
Figure 1). The table on the following page describes the signal/pin
relationships.
3.2 CONNECTION TO THE MAC PHONE PORT
The Model 1017 should be connected to your Mac through the
1 foot extension cable. Simply plug one end of the cable into the
Model 1017 and the other end directly into the phone (serial) port of
your Mac. The pin-outs are listed below.
1 - Blue
1 - Blue
2 - Orange
2 - Yellow
3 - Green
4 - Red
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate
Serial Port Pinout (RJ-45)
5 - Black
6 - White
1
2
3
4
5
6
7
8
=
=
=
=
=
=
=
=
N/C
HSKi (Handshake In)
HSKo (Handshake Out)
Ground
RD- (Receive Data-)
TD- (Transmit Data-)
N/C
Figure 1. AT&T standard modular color codes
N/C
3
4
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APPENDIX A
Mini Din 8 to RJ-45 Cable
Din 8 RJ-45
SPECIFICATIONS
Signal
1---------------3 --------------HSKo (Handshake Out)
2---------------2 --------------HSKi (Handshake In)
3---------------6 --------------TD- (Transmit Data-)
4---------------4 --------------Gnd (Ground)
Transmission Format: Asynchronous
Data Rate:
300 to 19,200 bps
5---------------5 --------------RD- (Receive Data-)
6---------------4 --------------TD+† (Transmit Data)
7 -------------N/C-------------GPi
Data Protection:
High speed surge protection and
transformer isolation (Model 1017S only)
8 -------------N/C-------------RD+ (Receive Data)
Distance:
See table below
Surge Protection:
600W power dissipation at 1 mS and
response time of 1.0 pS (Model 1017S only)
†TD+ is connected to ground
Control Signal:
The single Mac control line, Handshake In,
turns on when the modem is connected
3.3 OPERATING THE MODEL 1017
Transmit Line:
Transmit Mode:
Transmit Level:
Line Connection:
Power Supply:
4-wire, unconditioned line (2 twisted pairs)
Once the Model 1017 is properly installed, it should operate trans-
parently—as if it were a standard cable connection. Operating power
is derived from the Mac's data and control signals; there is no
“ON/OFF” switch.
Full duplex
0 dBm
RJ-11, RJ-45
No external power required, uses ultra low
power from data and control signals
Size:
2.0” x 1.7” x 0.8”
Distance Table (miles)
Wire Gauge
Data Rate
19
2.5
5.5
7.5
8.5
9.0
24
1.8
3.7
5.0
5.6
6.2
26
1.2
2.5
3.0
3.7
4.3
19,200
9,600
4,800
2,400
1,200
5
6
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APPENDIX B
BLOCK DIAGRAM
7
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