| Frequency Range |
8 Hz to 22 kHz |
| Screen Update Rate |
<0.7 sec (Frequency Response or Spectrum Mode) |
| |
0.2 sec to 1.3 sec (Delay Finder Mode) 1 |
| Frequency Resolution |
| Frequency Response Mode (Transfer Function) |
1/3, 1/6, 1/24 octave (selectable) |
| Spectrum Mode (Single Channel) |
1/6 octave (fixed) |
| Averaging of Data |
| Frequency Response Mode |
2 to 16 Vector or RMS, sliding, performed on a per-frequency-bin basis |
| Delay Finder Mode |
1 to 999 Vector, linear accumulator |
| Delay Finder Accuracy |
±10 µsec time, ±0.5 dB amplitude (lower trace) |
| Amplitude Accuracy (Frequency Response and Spectrum Modes) |
| Absolute |
±0.1 dB 20 Hz to 20 kHz, Input (A) and Output (B); ±0.15 dB 20 Hz to 20 kHz, Mic (C) |
| -1 dB Points |
8 Hz and 22.5 kHz |
| Channel Matching |
0.1 dB Input (A) to Output (B), 10 Hz to 20 kHz, ±1 degree phase matching |
| |
0.4 dB Input (A) or Output (B) to Mic (C), 20 Hz to 20 kHz |
| Signal Analysis Linearity |
THD <0.025% with full scale signal |
| Minimum Resolvable Signal |
| Input (A), Output (B) |
< -90 dBV Spectrum Mode (<-105 dBV midband), <-70 dBV Frequency Response Mode |
| Mic (C) |
<-115 dBV Spectrum Mode, <-75 dBV Frequency Response Mode |
| Maximum Measurement Signal Range |
<1 µVrms (Mic channel) to >28Vpk (A or B Input) |
| Gain Range |
-20 to +50 dB relative gain, switched in eight 10 dB steps |
| Measurement Inputs |
| Impedance |
10k ohms (A or B) balanced ISO™ Input, 5k ohms unbalanced; 8k ohms (mic), balanced |
| Phantom Power (Mic only) |
48 VDC ±2 V, switchable on/off |
| Maximum Input Signal |
26.0 dBV Input (A), Output (B), -4.0 dBV Mic (C) |
| A/D Converters (3 simultaneous channels) |
| Type |
16 bit Sigma Delta, 64 times oversampling, 3rd order noise shaping for 94 dB dynamic range |
| Anti-aliasing filters |
30-pole FIR digital and 5th order linear phase analog |
| Signal Generator |
| Output |
300 ohms balanced, 24 Vpk maximum output level |
| Sine Wave |
16 Hz to 22 kHz tunable in two ranges, <0.01% THD 100 Hz to 22 kHz, <0.1% THD at 16 Hz |
| Noise |
Pink spectrum ±1.5 dB, 20 Hz to 20 kHz |
| Pulse (Frequency Weighted) |
Average repetition rate 1.25 sec, time modulated |
| Physical |
| Storage |
1.44 Mbyte floppy disk drive, 120 Mbyte removable hard drive, 16 Mbyte internal RAM |
| Front Panel |
Controls
|
Source Level control, Sine Frequency, Phantom Power switch, Phones Level control, Phones source select switches (3), System Reset switch |
Indicators
|
Power, Disk, Generator source waveforms on/off, Phantom power on/off, Measurement inputs on/off, Phones sources on/off, Measurement input levels (20 segment LED bar displays), Input Overload |
Connectors
|
Input (A), Output (B) and Mic (C), 3-pin XLR female; Source, 3-pin XLR male; Phones, 3 circuit monophonic 1/4-inch phone jack, 32 ohms minimum impedance; Keyboard, 5-pin DIN |
Rear Panel Connectors
|
Audio Interface, 39-pin Whirlwind W-1 female; Control Bus, D-25 female; Video Output, D-15 high density male; Serial Interface, D-9 male; RS-232 Serial Interface, D-25 male; Parallel Interface, D-25 female; Power, IEC receptacle |
| Power |
90-250 VAC switchable in two ranges, 50/60 Hz, 300 watts |
| Dimensions |
19" W x 7" H x 24" D |
| Shipping Weight |
60 lbs (27 kg) including keyboard, cables, software and manual, without video monitor |
