Specifications

With novel RC oscillation technique, sine wave distortion is small, especially suitable for the pure tone audiometry speaker

The main parameters of the audio frequency sweep meter
Features:
1, with novel RC oscillation technique, sine wave distortion is small, especially suitable for the pure tone audiometry speaker.
2, frequency, output amplitude adopts digital display, more accurate readings, the error is smaller
3, sweep frequency starting point, end point adjusted
4, big output power, the largest up to 150 w
5, sine wave output amplitude
1212 bl: 0-12.8 RMS 8 Ω load
1212 dl: 0-18 8 RMS Ω load
1212 e: 0-22 8 RMS Ω load
1212 f: 0-28.5 RMS 8 Ω load
6, the output voltage meter indication error: plus or minus 10% (full)
Output voltage display error: plus or minus 10% plus or minus two words (output amplitude value is greater than the maximum output by 1/10, only the LW1212BL/DL)
7, sine wave frequency response: + / - 0.4 Db (based on 1 KHz, manual work status)
8, sine wave distortion, and not more than 0.5% of 100 hz - 20 KHZ, the frequency is not more than 0.8% (20 w, 8 Ω load)
9, the output power
LW1212BL: 20 w is not more than 20 KHz frequency 8 Ω load 12.8 RMS
LW1212DL: 40 w eight Ω load
LW1212E: 60 w eight Ω load
8 Ω load LW1212F: 100
10, sweep method: logarithmic
11, sweep than: not less than the latter
12, synchronous output: TTL square wave (except LW1212D/DL/E/F)
13, voltage-controlled input voltage range (VCF) : 2 v ~ 1 v deviation plus or minus 20% (LW1212D/E/F/DL only)
14, working power supply: 220 v + 10% to 50 hz + 2 hz
15, working environment: temperature: 0 °C to 40 °C, humidity is no more than % RH90 atmospheric pressure: 86 kpa to 104 kpa
16, appearance size: 1212 bl/DL/E/F, 320 mm * 360 mm * 360 mm