SRS Labs SR785 manual Transient Capture

Transient Capture

Mode	Continuous real-time data recording to
	memory.
Maximum Rate	262,144 samples/sec for both inputs
Max. Capture Length	2	Msamples (single input)
	8	Msamples with optional memory

Octave Analysis

Standards	Conforms to ANSI standard
	S1.11-1986, Order 3, Type 1-D.
Frequency Range	Band centers:
	Single Channel
	1/1 Octave	0.125	Hz - 32 kHz
	1/3 Octaves	0.100	Hz - 40 kHz
	1/12 Octaves	0.091	Hz - 12.34 kHz
	Two Channels
	1/1 Octave	0.125	Hz - 16 kHz
	1/3 Octaves	0.100	Hz - 20 kHz
	1/12 Octaves	0.091	Hz - 6.17 kHz
Accuracy	<0.2 dB (one second stable average,
	single tone at band center)
Dynamic Range	80 dB (1/3 octave, two second stable
	average) per ANSI S1.11-1986
Sound Level	Impulse, Peak, Fast, Slow and Leq per
	IEC 651-1979 Type 0

Order Tracking

Resolution	Up to 400 lines
Amplitude Accuracy	±1 dB (typ.)
Displays	Order map (mag and phase), order
	track (mag and phase), orbit

Curve Fit and Synthesis

Type	20-pole/20-zero non-iterative rational
	fraction fit.
Output Format	Pole-zero, polynomial, or pole-residue

Source Output

Amplitude Range	0.1 mVpk to 5 Vpk
Amplitude Resolution	0.1 mVpk
Offset Adjust	±5 V
Output Impedance	<5 Ω , ±100 mA peak output current

Sine-Source

Amplitude Accuracy	±1% of setting, 0 Hz to 102.4 kHz
	0.1 Vpk to 5.0 Vpk, high impedance
	load
Harmonics, SubHarm.	0.1 Vpk to 5 Vpk
and Spurious Signals	<-80 dBc (fundamental <30 kHz)
	<-75 dBc (fundamental <102 kHz)

Two Tone Source

Amplitude Accuracy	±1% of setting, 0 Hz to 102.4 kHz,
	0.1 Vpk to 5 Vpk, high Z load
Harmonics, SubHarm.	<-80 dBc, 0.1 Vpk to 2.5 Vpk

White Noise Source

Time Record	Continuous or Burst
Bandwidth	DC to 102.4 kHz or limited to span

Flatness	<0.25 dB pk-pk (typical),
	<1.0 dB pk-pk (max), 5000 rms
	averages

Pink Noise Source

Bandwidth	DC to 102.4 kHz
Flatness	<2.0 dB pk-pk, 20 Hz - 20 kHz
	(measured using averaged 1/3 octave
	analysis)

Chirp Source

Time Record	Continuous or Burst
Output	Sine sweep across the FFT span
Flatness	±0.25 dB, 1.0 Vpk

Swept Sine Source

Auto Functions	Source level, input range and
	frequency resolution
Dynamic Range	145 dB

Arbitrary Source

Amplitude Range	±5 V
Record Length	2 Msamples (playback from arbitrary
	waveform memory or capture buffer).
	Variable output sample rate.

General

Monitor	Monochrome CRT, 800H by 600V
	resolution, 8.2 inch diagonal display
Interfaces	IEEE-488, RS-232 and Printer
	interfaces standard.
	All instrument functions can be
	controlled through the IEEE–488 and
	RS-232 interfaces. A PC (XT)
	keyboard input is provided for
	additional flexibility.
Hardcopy	Print to dot matrix and PCL
	compatible printers. Plot to HP-GL or
	Postscript plotters. Print/Plot to
	RS-232 or IEEE–488 interfaces or to
	disk file. Additional file formats
	include GIF, PCX and EPS.
Disk	3.5" DOS compatible format, 1.44
	Mbytes capacity. Storage of displays,
	setups and hardcopy data.
Preamp Power	Power connector for SRS
	preamplifiers.
Power	70 Watts, 100/120/220/240 VAC,
	50/60 Hz
Dimensions	17"W x 8.25"H x 24"D
Weight	56 lbs.
Warranty	One year parts and labor on materials
	and workmanship.