Elenco Telephone Line Analyzer Kit - Manual (Page 2)

-1-
INTRODUCTION
Are you planning to install a new telephone? Are you having a problem with a newly installed telephone? Then
the Model TT-400 Telephone Line Analyzer Kit will help you pinpoint exactly where the problem is. The TT-400
connects between your telephone and the telephone wall jack and performs the following four tests:
a) Line Test - Verifies the DC voltage to your telephone.
b) Ring Test - Verifies the AC ranging voltage to your telephone.
c) Loop Test - Verifies the condition of the telephone line from the telephone company central office to the
wall jack in your house.
d) Telephone Line Cord Test - Verifies the condition of your telephone cord (if detachable).
SPECIFICATIONS
DC LINE TEST
SWITCH POSITION: LINE / RING
LINE OK: FOR 1/3 OF FULL SCALE, V
in
= 40VDC
FOR FULL SCALE, V
in
= 120VDC
REVERSE POLARITY: IF PHONE LINE POLARITY IS REVERSED, LED WILL BE ON.
ACCURACY:
3% AT 40V DC
LOOP TEST
SWITCH POSITION: LOOP
LOOP OK: FOR 1/3 OF FULL SCALE, I
in
= 20mA.
FOR FULL SCALE, I
in
= 60mA
ACCURACY: 3% AT 20mA
RING TEST
SWITCH POSITION: LINE / RING.
RING “?”: 40 Vrms TO 48 Vrms, 20Hz SUPERIMPOSED ON 48VDC.
RING OK: 48 Vrms TO 130 Vrms, 20Hz SUPERIMPOSED ON 48VDC.
THE REVERSE POLARITY (REV POL) LED WILL FLICKER DURING RING TEST.