Bypass Switch And Indicator Assemblies For 35 Type Sets; Bypass Switch And Indicator Assemblies For "Dataspeed - Teletype SA110 Description And Operation

SECTION 57 8-200-100
4. 04 The wiring for bypass switch assembly
TP327631, the SAH0 chassis, and the
terminal is shown in simplified form on Figure 8.
Refer to 8716WD for a complete schematic and
to 8566WD for actual wiring information.
(a) The bypass switch, SWl, has four trans-
fer contacts but only three of them are
used. In the bypass positfori (as shown on
Figure 8), the data set output is fed in at pin
5 on the orange wire, transferred to pin 4,
and fed out to the SMD input of the terminal
on the yellow wire. Since pin 2 is closed to
pin 6, the data output of the SAll0 (white wire)
is connected to the data input of the SAll0
(red wire). The white-slate and white-purple
wires are in series with the BREAK contact
of the terminal (if present) and are tied to.;.
gether at pins 7 and 8. The slate and purple
wires connect to the relay break contact in
the SAll0.
(b)
When SWl is activated, the data set output
at pin 5 (orange wire) is transferred to pin
.6 (red wire) where it is supplied to the data
input of the SAl 10. The data output of the
SAl 10 (white wire) at pin 2 is transferred to
pin 4 (yellow wire) where it is supplied to the
input of the SMD. This places the SAll0 in
series with the incoming data stream between
the data set and the terminal. Also, the white-
slate and white-purple wires at pins 7 and
8
are disconnected and the break contact of
the SAll0 relay is inserted between them in
series. When energized, this relay opens the
output data line, thereby causing a break to
be generated.
4. 05 The wiring for bypass switch ,and indi-
cator assembly TP327632, the ·SAll0
chassis, and the terminal is shown in simplified
form on Figure 9. Refer to 8716WD for a com~
plete schematic and to 8566WD for actual wiring
information.
(a) The bypass switch, SWl, has four trans-
fer contacts but only three of them are
used. In the bypass position (as shown on
Figure 9), the data set output is fed in at pin
5 on the orange wire, transferred to pin 4,
and fed out to the SMD input of the terminal
on the yellow wire. Since pin 2 is closed to
pin 6, the data output of the SAll 0 (white wire)
is connected to the data input of the SAl 1 0
(red wire). Since the bypass switch and
indicator assembly does not have break gener-
ation capability, the white- slate and white-
purple wires are tied back at the terminal.
Page 18
(b)
When SWl is activated, the· data set out-
put at pin 5 (orange wire) ·is transferred
to pin 6 (red wire) where it is supplied to the
data input of the SAll0. The data output of
the SA110 (white wire)at pin 2 is transferred
to pin 4 (yellow wire) where if is supplied to
the input of the SMD. This places the SAl 10
in series with the incoming data stream, as
for the TP327631 assembly. The counter
coil, DSl, and the lamp, DSl, are connected
to the relay transfer contact in the SAll0.
When the relay is energized, this contact per-
mits the counter to register the error and the
lamp to light. Depending on the SAll 0 strap-
ping (3. 2 9 and 3. 34), the lamp will flash on
for each error or latch on for the first error
and flash off for each additional error. For
each flash (on or off) of the lamp, the counter
will register another count. The reset switch,
SW2, extinguishes the lamp when the lamp
housing is depressed; the counter is mechan-
ically reset to zero by its own pushbutton.
BYPASS SWITCH AND INDICATOR ASSEMBLIES
FOR 35 TYPE SETS
4. 06 Assemblies TP327633 and TP327634 can
be mounted on 35 type ASR, KSR, or RO
sets. . Two holes are drilled in the upper cover
of the terminal and the bypass or indicator
assembly attached with screws and lockwashers
(Figure 10). A single cable connects the assem-
bly to the electrical service unit "C" wiring field
and the SAl 10 chassis, which is placed inside the
pedestal or mounted onanadjacent wall or table.
4. 07 The wiring for assemblies TP327633 and
TP327634 is identical to that for assem-
blies TP327631 and TP327632, respectively (4.04
and 4.05).
BYPASS SWITCH AND INDICATOR A SSE MB LIES
FOR ''DATASPEED"
RECEIVERS
4. 08 Assemblies TP327637 through TP327640
are for use on DATASPEED receivers.
They are held on the top of the cabinet by means
of two magnets attached to the bottom of the
assembly {Figure 11). Two cables are supplied
to connect the assembly to the data set and the
SAll0 chassis, which is placed on a shelf inside
the cabinet.
4. 09 The wiring for bypass switch assembly
TP327640, the SAll0 chassis, the ter-
minal, and .the data set is shown in simplified