AT&T Bell System Plant Series Description And Operation

BELL SYSTEM PRACTICES
Pacific Tel.
ADDENDUM 634-300-900PT
Issue B, June, 1974
HB11113-L 1 RAPID PAIR TESTER
(PR-50A AND PR-50B)
DESCRIPTION AND OPERATION
1. GENERAL
1.001
This addendum supplements Section
634-300-900PT.
1 .002
It is reissued to:
(a) Change the nomenclature of the set to the
PR-50B Rapid Pair Tester Test Set. It super-
sedes the PR-50A and HB11113-Ll which are
manufacture discontinued.
(b) Introduce the Range Setting Dial (PR-50B)
for use when cables are less than 15,000 feet.
(c) Provide information for measuring punch-
backs and splits.
(d) Change the title of the main section.
The following changes apply to Part 1 of the
section:
(a) 1.05 (e) and Figure 13 - Added
1.05(e)
The PR-60A Rapia Pair Tester Test Set is
used to train personnel in the use of the
HB11113-Ll; PR-50A and PR-50B test sets. It
simulates nonworking and working cables, as follows:
• In
the nonworking cable mode, this set simulates
a 25-pair cable 8000 feet long, containing shorts,
crosses, grounds, opens, splits, pu'nch-backs, and
good pairs. In the working cable mode, it pro-
vides all of the above conditions, plus a cross
with battery and working line in on-hook and
off-hook positions.
• Operation of the set: As shown in Figure 13, con-
nect PR-60A
to
a Rapid Pair Tester Test Set.
Move toggle switch to desired mode. For a non-
working cable, move both toggle switches to the
right position. For a working cable move the
switches to the left. The following list of cable
troubles are programmed into the set:
WORKING CABLE NONWORKING
CONDITIONS
CABLE CONDITIONS
SIMULATED WITH SIMULATED WITH
SWITCHES IN LEFT SWITCHES IN RIGHT
POSITION POSITION
PAIR
CONDITION NUMBER
CONDITION
WORKING LINE (IDLE)
1
GOOD PAIR
WORKING LINE (IDLE) 2 GOOD PAIR
WORKING LINE (IN USE)
3
GOOD PAIR
WORKING LINE (IDLE)
4
GOOD PAIR
GOOD VACANT PAIR
5
GOOD PAIR
WORKING LINE (IDLE)
6
GOOD PAIR
WORKING LINE (IDLE)
7
GOOD PAIR
WORKING LINE (IN USE)
8
GOOD PAIR
GOOD VACANT PAIR
9
GOOD PAIR
WORKING LINE (IDLE) 10 GOOD PAIR
SHORT & GROUND
11
SHORT & GROUND
GROUND (TIP) 12 GROUND (TIP)
SPLIT
13
SPLIT
LOW INSULATION
14
LOW INSULATION
(SHORT) (SHORT)
CROSS
15
CROSS
GROUND (RING)
16 GROUND (RING)
SHORT
17
SHORT
SPLIT
18
SPLIT
PUNCH-BACK (LONG)
19 PUNCH-BACK (LONG)
CROSS
20
CROSS
OPEN (RING) 21 OPEN (RING)
PUNCH-BACK (SHORT)
22 PUNCH-BACK (SHORT)
CROSS TO BATTERY
(TIP) (WET)
23
OPEN (TIP & RING)
PUNCH-BACK (LONG)
24
PUNCH-BACK (LONG)
PUNCH-BACK (SHORT)
25 PUNCH-BACK (SHORT)
• A 9-volt and a 45-volt battery are required to
operate the set. In order to obtain maximum bat-
tery life, the set should be switched to the non-
working cable mode when not in use. The bat-
tery condition may be determined by setting the
PR-60 to working cable, connecting to a Rapid
Pair Tester Test Set, and observing the meter on
pair number one. A reading of less than 45 in-
dicates that the batteries need replacing. Bat-
teries used for replacement purposes are:
45-volt
9-volt
Burgess
U 30
2 UG
RCA
vs
086
vs
323
Everready
415
216
Printed in U.S.A.
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