m
E A S U R E M E N T
P R I S M  S O U N D
T E C H N O L O G Y
G REAT PERFORMANCE G REAT FEATURES G REAT PRICE A ND IT ’S PORTABLE .
D S C O P
E  S E R I E S  I I I
T HE
COMPLETE SOLUTION FOR AUDIO TEST AND MEASUREMENT
P ORTABILITY
With a briefcase-style flight-case containing the test system and your notebook PC, dScope Series III is instantly ready for use wherever you are.
T WO -CHANNEL C ONTINUOUS -T IME A NALYZER (CTA)
The CTA is a real-time instrument with various filters which may be used in combination to perform a range of measurements.
• Real-time readings for two channels including amplitude, THD+n etc.• High and low pass and weighting filters.• Tracking or fixed band-pass/band-reject filter.
T WO -CHANNEL FFT A NALYZER
The FFT analyzer operates on a sampling basis and aquisition is controlled by a trigger facility. Various scalar readings can be derived from it and displayed as an FFT detector result.  Many FFT-derived readings can be displayed concurrently.• Broad selection of FFT window functions incorporating industry standards and high-performance proprietary types.• Real-time trace averaging "as you watch".
• Wide range of FFT-derived measurement results for THD, IMD etc. • Scriptable FFT Window functions and measurement readings.
D IGITAL INTERFAC
E TESTING
• Simulation of lossy cables and/or jittered sources by the digital generator.
• Measurement and display of source and cable-induced jitter components, sample-rate, eye narrowing & carrier amplitude.
• Routing of demodulated jitter signal to FFT analyzer enables viewing of jitter spectrum.
• Full support for Channel Status generation and analysis.• In-line patching of Channel Status.• Display of binary data by Channel Status fields.
• Control and display of ‘Valid’ bits • Word length control and bit activity
indication.
L IMIT
CHECKING
• Graphical limits can be set and violations flagged.
R EADINGS
• Reading windows can be ‘dragged’ out of analyzer windows and resized to customize your view of the instrument.• Headings, colours and units can be adjusted.
• Display can include a bargraph.
• Upper and lower limits and alarms can be set.
S WEEP ANALYZER
Sweeps up to four variables and may simultaneously measure up to four results.
T E C H N I C A L  D A T A
D S C O P
E  S E R I E S  I I I
A U D I O  T E S T  S Y S T E M
dScope Series III is a portable audio test system that is remotely controlled by a Windows98 or Windows2000 PC.  The dScope Series III unit is complemented by an easy to use software application. Communication with the host PC is by means of a USB link, providing true plug-and-play installation with no need to put anything inside the PC.  dScope Series III supports the new OLE/COM standards, allowing data to be exchanged easily with other applications.
A NALOGUE S IGNAL G ENERATOR
Frequency range:<1Hz..86kHz Amplitude range:<-100dBu..
+28dBu(bal)/+22dBu(unbal)
Residual THD+n (20Hz..20kHz):-105dB Multitones:2-128, 20Hz..20kHz, 0.73Hz
resolution
User waveforms:0.73Hz resolution at 192kHz
0.18Hz at 48kHz Bongs
Square-Wave Polarity checking
Multi-tone: Quick results from a single FFT trace
showing frequency response, noise &distortion
Output:  XLR or coaxial BNC
Balanced, common-mode 40R, 150/200R*,600R. Max output +28dBm into 600R *Note: Jumper selected
Unbalanced 20R, 600R, floating/grounded Asymmetric 600R,20R
A NALOGUE S IGNAL A NALYZER
resizedAmplitude range; peak:159Vrms
Input XLR or coaxial BNC/RCA 100kR,150/200R**, 600R (1W) **Note: Jumper selected Small-signal CMRR:<-80dB, Frequency range:<5Hz..86kHz
Residual THD+n (20Hz..20kHz):  -108dB Frequency resolution:0.01 Hz Phase resolution:0.1 degrees
D IGITAL S IGNAL G ENERATOR (D ATA )
Wordlength:8bits..24bits Dither:TPDF
DC resolution:48bits
Frequency range: 1Hz-fs/2 (maximum 96kHz)Residual THD+n (20Hz..20kHz):  <-140dBFS User waveforms:as analogue signal generator Channel Status:Fully settable for each channel Valid bits:Settable for each channel
D IGITAL S IGNAL G ENERATOR (S YNC )
Reference input formats:AES11, (XLR); WCK, (BNC); Video, (BNC) PAL/NTSC/SECAM Termination:switchable
Reference input rates:Any standard rate
Automatically recognised and measured with 1ppm accuracy Test input carrier phase wrt reference:
0..127.9UI (+/-180 degrees) displayed
Reference output formats: AES3, (XLR); WCK (BNC)
D IGITAL S IGNAL G ENERATOR (C ARRIER )
Formats:AES3, (XLR); S/PDIF, (RCA); AES3-id,
(BNC); TOS, (optical); 1wire/2wire at high rates (Sony SDIF-3/DSD options planned)Output impedance:110R, 75R
Sampling rates:32kHz, 44.1kHz, 48kHz,
88.2kHz, 96kHz, 176.4kHz*, 192kHz*** +/-1000ppm in 1ppm steps
Carrier amplitude: XLR and coaxial independently
settable Rise times;XLR and coaxial independently settable
5ns..200ns
Added jitter:Audio functions to 40kHz LF/HF
noise, 0..0.5UI HF, 0..20UI LF Added normal mode interference:Noise, 256
amplitude steps Added common mode interference:up to 40kHz,
max 20V p-p
(*** Note : Single channel only using 1 AES bearer at 88.2 or 96kHz frame rate.)
D IGITAL S IGNAL A NALYZER (D ATA )
Frequency range: DC..fs/2 (maximum 96kHz)Residual THD+n (20Hz..20kHz):<-140dBfs Wordlength:Bit activity displayed
Channel Status: Displayed and decoded for
each channel
Validity:Displayed for each channel
FFT A NALYZER
FFT Points:1k-256k
Analogue THD+n (20Hz..20kHz): <-106dB Digital THD+n (20Hz..20kHz): <-140dB Processing precision: 48+16 Floating Point Window functions:Industry standard window
functions plus proprietary Prism Sound windows to 150dB dynamic range
D IGITAL S IGNAL A NALYZER (C ARRIER )
Formats:AES3, (XLR); S/PDIF, (RCA); AES3-id,
(BNC); TOS, (optical); 1wire/2wire at high rates (Sony SDIF-3/DSD options planned)Input impedance:75R, 110R or HiZ
Input sampling rate:28.8-105.6kHz, up to
200kHz in 2wire mode**** Measured with 1ppm resolution
Carrier amplitude:Measured with 5mV resolution,
5% accuracy
Common-mode carrier amplitude (XLR):
Measured with 20mV resolution
Jitter analysis:Measured P-P with 700Hz cutoff.
Demodulated jitter can be passed to Time-domain and FFT analyzers.
Carrier display (Eye diagram):Display mode with
up to 300ps resolution
Signal condition indicators:Coding violations
Biphase error, eye-narrowing, parity error (**** Note : Single channel only using 1 AES bearer at up to 100kHz frame rate.)
M ONITOR F UNCTIONS
Monitor outputs (BNC):Digital or analogue
generator outputs, digital or analogue analyzer inputs, analyzer function outputs, digital carriers, demodulated jitter, sync pulses Audio monitor:Loudspeaker or headphone, to monitor functions, with volume control.
PRISM MEDIA PRODUCTS LIMITED William James House, Cowley Road, Cambridge CB4 0WX, UK Tel: +44 (0)1223 424988 Fax: +44 (0)1223 425023PRISM MEDIA PRODUCTS INC.21 Pine Street, Rockaway, NJ 07866, USA Tel: 1-973 983 9577 Fax: 1-973 983 9588www.prismsound e-mail: sales@prismsound
© Copyright Prism Media Products Limited 2000. All Trademarks acknowledged. E & OE In keeping with our policy of continuous development these specifications are
subject to change without notice.
Designed and printed by: M J Webb Associates • Newmarket • www.mjwebbassociates
L IGHTWEIGHT CASE :
A custom-made case for the dScope Series III is available separately.
Completely self-contained in a custom carrying case, dScope Series III can be transported as carry-on airline luggage.No 'scope is needed to view signal or residual waveforms, or even digital carriers, and a monitor speaker is built-in.
T YPICAL USES :
• Research and development • Production test • Field service • Maintenance
A PPLICATIONS :
• Professional audio • Broadcast • Internet audio • Multimedia • Consumer products • Sound reinforcement • Telephony • Communications

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