| Frequency range |
5Hz to 38kHz, 3 steps (coarse) and 32 steps (fine) per
octave. |
| Frequency accuracy |
Correct to 0.02% (200 ppm). |
| Frequency stability |
±30ppm |
| Frequency resolution |
32 spot frequencies synthesised over one octave,
repeating, multiplied by 2,4,8 etc. |
| Level accuracy |
±0.03dB +26 to -60dBu, ±0.2 60 to 80dBu.
Laser-trimmed resistors and software error corrections stored in EPROM. |
| Impedance accuracy |
±2% or ±2 Ω (whichever is
the greater). |
| Amplitude range |
100 to +26dBu in 1dB or 0.01dB steps. |
| Amplitude flatness |
±0.05dB, 5Hz - 31.5kHz. |
| Waveforms |
Sine, square, triangular, sawtooth (positive and negative
going), DC+ and DC-. A double tone with 70Hz separation is also available at 1kHz. |
| Tone bursts |
programmable frequency, level and duration (27 minutes
max. 100µs resolution). A series of tones or tone bursts can be easily programmed, and
can be made to repeat. Start on zero crossing. |
| Distortion (THD+N) |
<-86dB (0.005%) 1kHz; <-86dB 400Hz, <-80dB (0.01%) 100Hz;
<-76dB (0.016%) 6.3kHz; (all rms, 2f - 22kHz bandwidth). Combined LA101/102
measurement. |
| Output selection |
L/R/L+R or Mute. Muted channel is automatically
terminated with selected impedance. |
| Output impedance |
10 Ω at rear XLRs. 75 Ω or 600 Ω selectable on front jack sockets. Balanced and
floating, separate resistors. Other output impedances available to special order. |
| Minimum load |
600 Ω at +20dBu one channel,
or +18dB both channels loaded. |
| Weighting curves |
RIAA; ITU-R 468 468; O41; 50µs de-emphasis; plus 5 user
programmable weighting curves. |
| Sequences |
Over 60 predefined test sequences and 10 user
programmable sequences. |
| Segments |
47 selectable test segments for user assembly. |
| FSK |
Frequency Shift Keyed data transmitted over signal path,
110 baud. |
| Presets |
5 frequency and 5 level presets (user programmable) |
| Relative levels |
Any level can be set as a 0dB reference. |
| Z-correction |
Automatic level corrections for 600 Ω loading selectable. |
| Inputs |
10kΩ and 600Ω selectable. Differential inputs, with L/R selection. |
| Overload protection |
100V rms, diode limited. |
| Level measurement |
-95 to +28dBu in 10dB ranges (autoranging/manual). |
| Default |
RMS 2Hz-100kHz -3dB, 20Hz-40kHz -0.2dB. |
| Options 2-5 |
RMS 22Hz-22kHz, VU 22Hz-22kHz, RMS A Wtd, PPM, VU A Wtd. |
| High pass filter |
400Hz with12dB/octave selectable. |
| Audio band filter |
selectable with 22Hz 12dB/octave, 22kHz 36dB/octave. |
| Level resolution |
Numeric: 0.01dB steps. Bar graph: 0.2dB/pixel (default)
0.04dB/pixel (zoomed). |
| Level accuracy |
±0.05dB +28 to -60dBu, ±0.2dB -60 to -80dBu |
| Frequency |
Reciprocal counting 20Hz-20kHz, 4-5 digit readout |
| Phase |
±180º, 20Hz to 20kHz with ±2º accuracy (up to 40kHz
with reduced resolution). |
| Noise measurement |
-105 to +8dBu in 10dB ranges. |
| Default |
ITU-R 468 weighted quasi-peak. |
| Options 2,3,6,7 |
ITU-R 468 unweighted, RMS 22-22k, ITU-R 468/ARM, ITU-R 468 RMS. |
| Residual Noise |
-97dBu ITU-R 468468 wtd, -107dBu RMS 22kHz. |
| Rumble measurement |
Weighted slow (IEC98) (on noise option 5). Unweighted
slow (IEC98) (on noise option 4). |
| Crosstalk |
-117 to +8dBu, narrow band measurement, automatic freq.
selection. Measured with a two stage 12dB/oct bandpass filter. -1dB at 20% frequency
error, -10dB at one octave. |
| Options1-6 |
100Hz, 315Hz, 1kHz, 6.3kHz, 10kHz, 40Hz. 400Hz instead of
315Hz available to order. |
| Options 7-9 |
80Hz-400Hz, 1.8kHz-21kHz and 12-21kHz bandpass. |
| Residual Noise |
-117dBu at 1kHz, -111dBu at 6.3kHz typical. |
| Distortion |
THD+Noise, relative, with automatic fundamental
measurement and filter frequency selection. Measured with a combined multi-stage notch and
high-pass filter. Frequency tolerance is ±1% for 70dB rejection. No nulling required and
the broad notch rejects flutter sidebands effectively. (-60dB @ +2%) |
| Options 1-6 |
100Hz, 315Hz (3rd harmonic), 1kHz, 6.3kHz, 10kHz, 40Hz. |
| Input Level Range |
-60dBu to +28dBu, noise limits readings below 0dBu. |
| Residual reading |
Combined specification as for LA101 above. |
| Response |
0.5dB at 2nd harmonic, 22kHz 36dB/octave band-limited. |
| Wow & flutter |
-80dB to -20dB (0.01% to 10%). |
| Default |
weighted quasi-peak to IEC386, DIN45507. |
| Options 2,6,7 |
Unweighted quasi-peak, weighted RMS, Unweighted RMS. |
| Quantising distortion |
40Hz notch, 400Hz HP, Wtd ITU-R 468 & Unwtd rms. |
| Difference frequency dist. |
70Hz bandpass filter for 2nd order difference frequency
distortion measurement on double tone with 70Hz separation (1kHz-20kHz). |
| FIM (Frequency Intermod.) |
To DIN45411 (3KHz/300Hz) to -60dB, 0.1% |
| Sequences |
Responds automatically to all LA101 sequences. |
| FSK speed tolerance |
±4% speed error allowed. |
| Monitor loudspeaker |
With volume setting and listen switch. |
| Scope/headphones output |
BNC 1V RMS output mid-scale and 0/+5V BNC sync. pulse. |
| 22Hz-22kHz filter |
Elliptic design with 60dB rejection at 44kHz. This
permits valid distortion measurement on digital equipment despite sampling residue. |
| Sequence results |
Sweeps produce a graph on the display with cursor
readout, automatic scrolling and scaling facilities. Sequences produce a graph plus
several pages of data with quick access. |
| Printout |
Sequence results can be printed directly on an Epson
ESC/P, IBM or HP Deskjet compatible printer fitted with serial interface. Printout
includes high resolution frequency response graphs. |
| Sequence results memories |
5 sequence memories allow later printout or analysis. |
| Tolerance testing |
5 user programmable tolerances in addition to 10
pre-programmed tolerances (Selftest, IBA, EPS81, EPS84, EPS98, Studer A812 etc) |
| Test tape mode |
LA102 can automatically measure frequency response,
W&F and speed from a test tape, ignoring voice announcements and plotting an
interpolated graph between the spot frequencies it finds. External frequency sweeps can
also be used. |
| Standards |
All measurements meet quoted standards regarding
weighting curves, accuracy, and meter ballistics. |
| Remote control |
The RS232 compatible serial interface provides complete
control of measurements and access to results using a comprehensive set of ASCII commands.
5 pin domino DIN sockets. |
| Serial interface |
Inputs: Opto-isolated, +2V threshold. Outputs ±5V.
Compatible with most RS232 and RS423 equipment. 8 data bits, 1 start bit, 1 stop bit, no
parity. |
| Baud rate |
75, 110, 150, 300 (default), 1200, 2400, 4800 and 9600
(19200 baud also available on LA102 output only). Split baud rates supported. |
| Size |
216mm(W) × 88mm(H) × 258mm(D). Weight: 3kg (LA101 or
LA102).Display 71mm × 27mm. |
| Power requirement |
Mains 220-250V, 50-60Hz, 9VA, (110V option). |
| Battery life |
Automatic mains recharge in 36 hours. |
| Safety |
IEC1010 |
| Temperature range |
10-40ºC operating, 10-30ºC for full distortion
specification. |
| Connectors |
PO 1/4" Jack (B gauge, small tip) & XLR-3 at
rear. |
| Guarantee |
1 year. Fast repair/software recalibration service
available. |
| Technical support |
Lifetime technical support from Lindos via telephone
(usually 24 hours), mail or e-mail |
| EMC compliance |
Complies with the EMC directive (EN50081 & EN50082)
when used with connecting leads as prescribed in the LA100 handbook. |
| Traceability |
Calibration either traceable to British National Standards
or derived by approved ratio techniques. |
| Calibration Interval |
2 years recommended. |
| Support Software |
Lin4win running under all version of Windows including Windows 10. Connecting leads to a 9w D type serial port are included. |
