Amprobe TT-300 User Manual
Document2 2/12/01 4:26 PM Page 1
MINI BUTT SET
MODEL TT-300
Instruction Manual
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Copyright © 2001 Amprobe
AMPROBE
Document2 2/12/01 4:26 PM Page 2
INTRODUCTION
The TT-300 is designed for the installers, repair technicians, and other
authorized personnel for line testing and temporary communications.
The test set employs the latest in integrated circuit design to provide
DTMF (Touch Tone). Different from other test sets, it contains a mega
ohm (MΩ) meter for testing insulation resistance and telephone capacity.
The repairman can independently find out line conditions (faults) without
the help of central office (CO) by measuring the insulation resistance and
telephone capacity. The mini size and ear-microphone allows for hands
free operation. The mini size and hands-free function enables the lineman to use both hands, thus enhancing safety, work efficiency, and easiness to carry.
FEATURES
1. Monitor (Data Safe) Function
2. Hands-free Conversation with Ear-Microphone
3. Conversation without Ear-Microphone
4. Subscriber Calling
5. Tone Dialing
6. Call Receiving
7. Last Number Redial
8. Flash Function
9. Piercing Pin and Angled Bed of Nails Cord (ABN)
10. Telephone Line Capacity
Earth-State
Line-Cut (open)
Line-Short
11. Line Continuity Testing
12. Over-Voltage & Current Protection
13. Battery Check Function
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PHYSICAL DESCRIPTION (See Figure 2)
1. Test Jack - For "Test cord".
2. Contrast Jack - To connect "Line Cord for Continuity
3. Ear-Microphone Jack
4. Hole for "Neck Strap"
5. Mega Ohm (M ) Meter
6. Dial Keypad
7. PUSH/INSUL - Button for measuring insulation resistance or
subscriber calling.
8. MON/RCV Switch -
LED 'Off' mode - For subscriber calling (same as 'Off Hook").
LED 'On' mode - To monitor line without data loss and receive calls
(same as 'On Hook).
9. CALL (PUSH)/CONTRAST, HOT-LINE Switch -
LED 'On', you can do line contrast, subscriber calling and hot-line.
10. Speaker - Used for subscriber calling without Ear-Microphone.
11. Ringer - For receiving call.
12. Microphone - Used for subscriber calling without Ear-Microphone
13. Battery Cover - Compartment for one 9V battery.
ITEMS INCLUDED WITH TT-300
• Cordset - The cordset with one red and one black conductor. Each
conductor is fitted with an alligator clip, offset 20 degrees, with piecing
pin and angled bed of nails. (P/N TT-300-1)
• Line Cord - Used for line continuity test. The black conductor is fitted
with an alligator clip, offset 20 degrees, with piecing pin and angled bed
of nails. (P/N TT-300-2)
• Ear-Microphone Set - Used for hands-free operation. (P/N TT-300-3)
• Neck Strap (P/N TT-300-4)
• Carrying Case
(P/N TT-300-5)
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