Bell System Practices Plant 33 ASR Manual

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BELL SYSTEM PRACTICES
Plant Series
SECTION 580-301-200
Issue 1, May 1968
AT&TCo Standard
NO. 1 ELECTRONIC SWITCHING SYSTEM ADF
HALF-DUPLEX-100 WORD PER MINUTE DATA STATION
USING 4-ROW TELETYPEWRITERS
INSTALLATION
1. GENERAL
1.01
This section describes the procedure to be
followed for the installation of a Model
33- or 35~type Teletypewriter (TTY) data station
associated with the No. 1 Electronic Switching
System Arranged with Data Features (No. 1
ESS ADF).
1.02
The 33- or 35-type TTY data station is
a self-contained station which is intended
to be completely assembled by the distributing
house prior to shipment.
1.03
The customer must furnish a standard
three-wire, grounding-type, 106- to 129-
volt, 59.5 to 60.5 Hz ac power receptacle (to ac-
cept a plug equipped with two parallel blades
and a round-shaped grounding pin). The recept-
acle shall not be under control of a switch.
1.04
Verify with the Serving Test Center (STC)
that the overall facilities meet transmis-
sion requirements specified in the section en-
titled Private Line Data Circuits, Voice Band-
width Circuits For Miscellaneous Data, Overall
Tests and Requirements (314-410-500).
1.05
Reference directions (left, right, front, or
rear) are in respect to facing the keyboard
which is located at the front of the 33- or 35-type
TTY.
2. INSTALLATION
2.01
Verify that the location selected by the
customer for the 33- or 35-type TTY data
station is adequate for maintenance. The fol-
lowing TTY measurements should be exceeded
to allow room for disassembly of the station
if required.
• 33 ASR - 22 inches wide, 34 inches high,
and 19 inches deep
• 33 RO - 19 inches wide, 34 inches high,
and 19 inches deep
• 35 ASR - 40 inches wide, 35 inches high,
and 24 inches deep
• 35 RO - 26 inches wide, 35 inches high,
and 24 inches deep
• 35 ROTR - 13-5/16 inches wide, 34 inches
high, and 14 inches deep
• KS-20018 Ll, L2, L3, or L4 Cabinet:
Ll - 24 inches wide, 12 inches high, and
12 inches deep
L2 - 24 inches wide, 17 inches high, and
12 inches deep
L3 - 24 inches wide, 24 inches high, and
12 inches deep
L4 - 24 inches wide, 30 inches high, and
12 inches deep
2.02
Verify that the customer-provided ac
power receptacle is within seven feet of
the selected location.
~ Do not connect power
to
the TTY data
~
station until instructed
to
do so.
2.03
To gain access to Data Set 108A- or 109A-
type and Data Auxiliary Set (DAS) 820Bl
or 820B2, proceed as follows:
33 ASR and 33 RO TTY
(1) Remove the two mounting screws located
at the top rear of the stand.
©American Telephone and Telegraph Company, 1968
Printed in U.S.A.
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