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Specifications
Monitor Impedance .................................................................................................... > 400 kΩ @ 1 kHz
Loop Resistance (maximum) ............................................................................................................5 kΩ
Current Draw ............................................................................................................................ < 15 mA
DC Resistance
Talk Mode ............................................................................................................................< 300 Ω
Idle ..................................................................................................... > 10 MΩ (30 µA @ 300 VDC)
Monitor ................................................................................................ > 10 MΩ (30 µA @ 300 VDC)
Temperature
Operating .............................................................................................–34 to 60 °C (–29 to 140 °F)
Storage ................................................................................................–50 to 75 °C (–58 to 167 °F)
Battery ......................................................................................9 V alkaline (NEDA 1604A or IEC 6LR61)
Introduction
The PE9XX Series Nautilus Telephone Test Sets are an advanced, convenient, and easy-to-use
telephone line troubleshooting device. Equipped with a number of LEDs and alarms, it lets the user
know the operating mode and provides alerts for hazardous situations.
LEDs:
Polarity
Low Battery
Talk/Monitor
Tones:
Low Pitch
Middle Pitch
High Pitch
The LEDs and tones indicate various conditions and functions. They are shown throughout the manual
in italic type.
The PE945/PE961 produces two types of alarms to alert the user to potentially hazardous situations.
• Excessive DC voltage is indicated by low pitch tones (Boop... Boop... Boop...).
• AC line voltage is indicated by continuous ringing.
If you hear either of these alarms, which are repeated in bold italic type in this manual, remove the
test set from the line carefully and immediately.
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