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NEC TTS 26B Instruction Manual page 27

Pulse signaling test set

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TTS
26B
Section 3
EXT DIAL CIRCUIT
SWITCH POSITION
EM
o o 0 0
LOOP
[
SEND l
o
~
2
~
~
F
I
&
- 2
0
EXT DIAL
ADJ. %BREAK
DlAL RELAY-M
h0
DIAL RELAY-E
f T
EXT DIAL
DRIVE
llDJ- X BREAK
-48 VDC
EXT DIAL
EXT D I M
% BREAK
ADJ.
X
BREAK
SUPERVISORY MONITOR CIRCUIT
FUNCTION key switch in the TEST L AND 0 position
LIME(€)
ond
DROPOI)
key switches
in
the
MONITOR positions.
Figure
3 - 4
SUPERVISORY MONITOR CIRCUITS

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