Activeforever Plextalk PTR2 Digital DAISY Player and Recorder - Manual (Page 198)

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• Jack 3.5mm diameter stereo mini jack
External Microphone:
• Input impedance 2.2k ohm unbalanced
• Jack 3.5mm diameter stereo mini jack
Line Input:
• Input impedance 20k ohm unbalanced
• Jack 3.5mm diameter stereo mini jack
Build In Speaker:
• Output impedance 8 ohm
• Output voltage 150mW
Build-in Microphone:
• Mode Electric condenser microphone
Record Level LED:
• Under level “Low” -25 dB (from peak)
• Proper level "Good" -12 dB (from peak)
• Over level "High" -3 dB (from peak)
Main Functions.
Voice guide:
• Guides operation by voice.
• Provides key explanation. (Press and hold key when key lock is on.)
• Menu explanation. (Press and hold the 5 key when a menu item is
selected)
Search function:
• Heading, Page, Time, Bookmark, Group
• Album, Track, File
Volume adjustment:
• 0 to 20 (in increments of 1)
Guide volume adjustment:
• 0 to 20 (in increments of 1)