LED 1/GND: Indicates continuity be-
tween pins 1 of an XLR cable or MIDI
cable, or ground on an RCA or 1/4"
cable.
LED 2/TIP: Indicates continuity between
pins 2 of an XLR cable, or the tip on an
RCA or 1/4" cable.
LED 3/RING: Indicates continuity be-
tween pins 3 of an XLR cable or MIDI
cable, or the ring of a 1/4" cable.
OPERATION
Insert one end of the cable to be tested
on the left side of the line, located in the
middle of the CT
1, and the other
side of the cable
on the right side
of the line. See
example here.
CT 1
CABLE DETECTIVE
Cable Tester
Owners Manual
SLC, Utah
10/01
CT 1 CABLE DE-
TECTIVE
• Tests 1/4", RCA, XLR and MIDI
cables
• Tests combinations of the above
• Easy-to-read LED indication
Any musician or sound person knows how
difficult it is to maintain cables. The CT 1
provides an efficient way to detect shorted
or open cables. The unit tests 1/4" TS,
1/4" TRS, RCA, and XLR cables. It tests
MIDI cables, plus, it will test combinations
of the above.
1
22-Apr-1999
Document Number:
Date: Sheet of
Ba
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INTRODUCTION
Thank you for your purchase of the CT
1 CABLE DETECTIVE cable tester. This
unit was designed with the working musi-
cian and sound person in mind. Read the
following manual carefully to ensure proper
operation and a full understanding of all the
CT 1 functions. The unit tests for: opens,
shorts, intermittents, and crossed wires
WARRANTY
For information on the Rolls One Year Lim-
ited Warranty, and to register this product,
visit our website at www.rolls.com
DESCRIPTION
The CT 1 consists of two RCA jacks, two
1/4" jacks, two female XLR, two male XLR
jacks, and two MIDI jacks.
To test RCA and 1/4" TS cables, plug each end of the cable into the proper jack and
wiggle the cable around at different points on the cable. Watch the 1 and 2 LEDs, if
either LED is off, or goes on and off - the cable is bad.
The testing procedure for 1/4" TRS (stereo) and XLR cables is identical to the above,
except watch the 1, 2 and 3 LEDs. Adapter type cables, such as 1/4" to XLR cables,
may also be tested by plugging each end into it's proper jack on either side of the line.
Test as indicated above.
To test a MIDI cable, plug each end
of the cable into the MIDI jacks and
test as described above. Watch the
1 and 2 LEDs, if either LED is off, or
goes on and off - the cable is bad.
NOTE: WHEN TESTING A 1/4"
MONO TO RCA CABLE, CON-
NECT THE 1/4" PLUG TO THE
LEFT 1/4" JACK AND THE RCA
TO THE RIGHT RCA JACK. DUE
TO A PARTICULAR CIRCUIT
CONSIDERATION, TESTING VICE
VERSA (WITH THE 1/4" ON THE
RIGHT AND THE RCA ON THE
LEFT) WILL BE INACCURATE.
TEST INDICATORS
NO LEDS = BAD CORD OR DEAD
BATTERY
1 LED = SHORTED WIRES
2 LEDS = RCA, MIDI OR MONO
CORD GOOD, OR CROSSED
WIRES IN STEREO & XLR CORDS
3 LED = GOOD STEREO 1/4" TRS,
OR XLR CORD
