1. What does oximeter mean?

2. What is PFM?

3. Translate the English connections for the power amplifier. Thank you.

Different functions of power amplifiers result in different markings on them. Below are some common ones. If you are satisfied with my answer, please adopt them in a timely manner. LOUD Loud MUTE Mute CH.MODE (change mode) Swap/channel mode Channel conversion DSP Digital signal processing/Digital processing MIC1 LEVEL Microphone # 1 Output voltage DIGITAL ECHO Digital echo MIC2 LEVEL Microphone # 1 Output voltage DELAY Delay MIC TREBLE Microphone Bass (high frequency) Control MIC BASS Microphone Bass (low frequency) Control S.L (speaker left) Left speaker Center Middle speaker S.R (speaker right) Left speaker S.WOOF (speaker woof/woofer) Bass speaker BASS Low frequency control TREBLE High frequency control VOLUME Volume control F.R (front right) Front right F.L (front left) Front left AC-3 AC-3 Surround sound VCD VCD playback AUX (auxiliary) auxiliary input LOUDNESS loudness PLAY display DSP digital signal processing/digital processing TONE tone SL represents left surround, CEN stands for center, FL main left channel, FR main right channel, SW subwoofer, SR stands for right surround sound (two channels) stereo bridge mode balanced balanceLineOut - line output LineIN - line input mixing console operation terminology English Chinese comparison GAIN: input signal gain control HIGH: high frequency level control MID-HIGH: mid high frequency level control LOW: low frequency level control PAN: phase control MON.SEND: branch monitoring signal control EFX.SEND: branch effect signal control LIMIT (LED): signal limiting indicator LEFT.: left signal level control RIGHT: right signal level control MONITOR: monitoring system MON. OUT: monitoring output MASTER: total channel level control EFX.MASTER: effect output level control EFX.PAN: effect phase control EFX.RET: effect Return level control EFX.MON: effect sent to monitoring system level control PLAY: level indicator ECHO: reverberation HIGH I IN: high impedance input LOW I IN: low impedance input OUT/IN: output/input conversion jack AUX. IN: auxiliary input MASTER OUT: main output EFX. OUT: effect output EFX. RETURN: effect return input LAMP: dedicated lighting power POWER: main power switch BALANCE OUTPUT: balanced output FUSE: fuse PEL: pre listening button EFF: effect level control MAIN: main LEVEL: channel balance control HEAD PHONE: headphone jack PHANTOM POWER: phantom power switch SIGNAL PROCESS: signal processor EQUALIZER: equalizer SUM: total output grouping switch LOW CUT: low frequency cutoff switch HIGH CUT: High frequency cut-off switch PHONO INPUT: turntable input STEREO OUT: stereo output ACTION: dynamic indicator CUE: selector switch MONO OUT: mono output Program BALANCE: Main Output Audio Visual Control MONITOR BALANCE: Monitor Output Audio Visual Control EQ IN (OUT): Equalizer In/Out Button FT SW: Foot Switch REV.CONTOUR: Reverb Profile Adjustment PAD: Fixed Attenuation, Attenuator - Audio Mixing Console English Comparison Table AUX IN Auxiliary Input Interface ACTION Dynamic Indicator BALANCE OUTPUT Balance Output Bank CUE Selective Listening Switch CLIP Sharpening CANNON Canon DOLBY Dolby Denoising Display Level Indicator EFF Effect Level Control EFF SEND Split Effect Signal Control EFF PAN Effect Phase Control EFF RET Effect Return Level Control EFF MON Effect to Monitor System Level Control EFF OUT Effect Output EFF F RETURN Effect Re

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