Keithley Instruments 2910 Data Sheet

Digital Signal
Processor
(DSP)
Field
Programmable
Gate Array
(FPGA)
Digital
Upconverter
(DUC)
Arbitrary Waveform Generator
Memory
Digital-to-
Analog
Converter
(DAC)
2910
RF Vector Signal Generator
Exceptional signal generation
capability at an economical price
Fast frequency tuning and
amplitude level settling – both <1.6ms
Outstanding level accuracy
– typically <±0.3dB
Continuous frequency range
of 400MHz–2.5GHz spans key mobile wireless frequency bands
Intuitive, easy-to-use graphical
user interface
40MHz modulation bandwidth
using internally generated modulation
200MHz modulation band-
width using external I/Q inputs
Built-in waveforms for popular
digital (GSM/GPRS/EDGE, cdmaOne/cdma2000 1xRTT, and WCDMA) and analog (CW, AM, FM, ΦΜ , noise, two-tone CW, and pulsed) signal formats
GUI supports editing waveform
files and creating new ones for GSM, GPRS, EDGE, WCDMA, cdmaOne, and cdma2000 downlink signals
256MB (64 mega-samples)
built-in arbitrary waveform generator supports downloading waveforms generated externally
Half-rack, 3U enclosure fits
easily into both rack and benchtop system configurations
Remote control via Ethernet,
USB, and GPIB interfaces
LXI Class C compliant
Readily updatable software-
defined radio architecture
3-year standard warranty
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When characterizing or verifying DUT performance, the speed of the RF signal generator can have a major impact on overall test throughput and, therefore, the cost of test. Higher speed also makes it possible for manufacturers to respond quickly to increased volume demands. The Model 2910 is designed to execute key tasks like frequency tuning, amplitude switching, and waveform changes significantly faster than other products available.
The Model 2910’s continuous frequency range of 400MHz to 2.5GHz spans key mobile wireless bands. Digital waveforms for key tests in major cellular formats (GSM, GPRS, EDGE, WCDMA, cdma­One, cdma2000) for testing handsets are built in, as is support for analog modulation (continuous wave, two-tone continuous wave, amplitude modulation, frequency modulation, phase modulation, pulse modulation, and noise). The 64 mega­sample Arbitrary Waveform Generator (ARB) and 40MHz modulation bandwidth support downloading a wide range of externally gener­ated signal waveforms. A 2MHz noise bandwidth supports “quick-check” noise immunity tests on a variety of devices.
The instrument’s software-defined radio archi­tecture gives telecom manufacturers the testing flexibility needed to keep pace with changing wireless technologies, as well as fast frequency tuning, amplitude settling, and waveform switch­ing. New signal structures and instrument fea­tures can be incorporated easily and economi­cally with ongoing firmware updates.
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Figure 1. The Model 2910’s software-defined radio architecture allows manufacturers to adapt it readily to changing test requirements.
Signal generator for mobile communications testing
RF/MICROWAVE SWITCH & INST.
1
2900
Ordering Information
2910-FRK RF Connector on
2910-RRK RF Connector on Rear,
2910-F RF Connector on
2910-R RF Connector on Rear,
* Versions configured for rack installation include rack mount kit and exclude bum­pers and handle.
** Versions configured for bench-top use include bumpers and handle and exclude rack mount kit.
Options
2910-ARB 64 Mega-Sample
2910-GSM GSM Signal
2910-CDMA2000
Signal generator for mobile communications testing
2910-WCDMA
2910-LPN Low Phase Noise
ACCESSORIES AVAILABLE
2910-RMK Rack Mount Kit 2910-BENCH-KIT Bench-Top Kit: Bumpers and Handle 2910-DCBLOCK External DC Block 2910-ADA PTER-KIT Cable and Adapter Accessory Kit
Front, Configured for Rack Installation*
Configured for Rack Installation*
Front, Configured for Bench-top Use**
Configured for Bench­top Use**
Arbitrary Waveform Generator
Generation Personality
cdma2000 Signal Generation Personality
WCDMA Signal Generation Personality
RF Vector Signal Generator
Higher Speed for Lower Cost of Test
A state-of-the-art digital signal processor (DSP) and high speed RF architecture provide the Model 2910’s speed and help reduce RF device manufacturers’ cost of test:
• Faster tuning. The Model 2910 can switch frequencies in less than 1.6 milliseconds for unmodu-
lated signals and less than 1.8 milliseconds for modulated signals, which is significantly faster than many higher-priced competitive instruments.
• Faster amplitude settling. When changing signal amplitude levels, the Model 2910’s unique RF
output structure settles to specified level accuracy in less than 1.6 milliseconds for unmodulated signals and less than 1.8 milliseconds for modulated signals, which is significantly faster than most competitive instruments.
• Highly responsive controls. The Model 2910’s high speed response to user inputs from the front
panel or to programmed commands ensure fast waveform downloads and fast switching from one waveform to another, eliminating waiting times.
• Large Arbitrary Waveform Generator. A built-in Arbitrary Waveform Generator (AWG) with
256MB (64 mega-samples) of waveform memory allows users to have many waveforms resident in memory simultaneously. The large memory supports downloading ARB files created with external software packages like MATLAB Switch quickly between waveforms—typically in less than three milliseconds.
Powerful Built-in Tools and Capabilities
The most important digital signal structures needed to produce forward link (downlink) signals for all the major cellular formats (GSM, GPRS, EDGE, WCDMA, cdmaOne, cdma2000) are already built in to the Model 2910. The intuitive graphical user interface (GUI) greatly simplifies generation of non­standard signals or modification of existing waveforms for GSM, GPRS, EDGE, WCDMA, cdmaOne, and cdma2000 forward link (downlink) signals. The large arbitrary waveform generator memory and 40MHz of modulation bandwidth extend the signal generation capability to virtually any signal with up to 40MHz of bandwidth. For applications that require even more modulation bandwidth, the Model 2910 gives users the external I/Q modulation inputs (with 200MHz of modulation bandwidth).
The Model 2910’s continuous tuning capability from 400MHz–2.5GHz covers all the key mobile com­munications bands, but also expands its applications far beyond the production test floor. The user­friendly GUI, easy-to-use front panel controls, and range of analog modulation capabilities make it an equally good choice for R&D applications.
Superior Signal Generation Accuracy
Digital baseband processing and optimal real-time digital reconstruction filtering allow the Model 2910 to deliver an extremely clean signal to a high performance I/Q modulator. As a result, the modulator produces signals with outstanding modulation quality. For example, the error vector magnitude (EVM) for EDGE signals is extremely low (<0.5%). This ensures precise, repeatable signals that help minimize measure­ment errors.
Outstanding amplitude accuracy (<0.5dB, typi­cally <0.3dB) and linearity (<0.05dB) minimize signal level uncertainty, which minimizes mea­surement errors, simplifies the testing process, and allows for tighter specifications for devices under test.
®
, Mathcad®, or other tools capable of generating I/Q waveforms.
APPLICATIONS
• Mobile handset production test
• Handset R&D and design verification
• Testing mobile communications infrastructure
• RFIC testing
• Wireless connectivity testing (802.11b/g WLAN, Bluetooth)
• Research and education in mobile communications
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(U.S. only)
A GREATER MEASURE OF CONFIDENCE
2910 RF Vector Signal Generator
Easy to Configure, Easy to Use
A variety of features combine to simplify configuring and operating Model 2910-based RF test systems:
• Intuitive GUI. The simplicity of the Model 2910’s touch-screen graphi-
cal user interface makes it ideal for both experienced RF test engineers and novices such as students.
• Compact size. At just 3U (5.25 inches) high and half the width of a
19-inch rack, the Model 2910 is equally well-suited for test rack installa­tion and benchtop use. Its compact enclosure makes it easy to pair with complementary half-rack RF instruments for a lot of testing capability in little space.
• Choice of remote programming interfaces. The Model 2910 offers
wide connection flexibility when linking it to a system controller. Its built-in 100Base-T Ethernet and USB interfaces allow direct, high speed programming and command transfer. A GPIB interface is also included for use in legacy environments.
• Flexible remote software tools. A collection of tools are included with
the Model 2910 to provide flexibility and simplicity to developers of remote control software applications. Programmers can develop applica­tions directly in SCPI or make use of IVI-COM and IVI-C drivers, or a suite of LabVIEW™ building blocks.
• LXI Class C Compliance. The Model 2910 supports the physical, pro-
grammatic, LAN, and web portions of the emerging LAN eXtensions for Instrumentation (LXI) standard. The Model 2910 is the first RF signal generator to be certified LXI compliant.
• Graphical Help system. The comprehensive and easy-to-use documen-
tation in the instrument’s Help system is accessible both through the GUI and off-line, so users can refer to it while working directly with the Model 2910 or while working at their desks on their PCs.
Figure 2. The Model 2910 features an intuitive GUI that simplifies selecting, creating, or editing a variety of waveforms.
Signal generator for mobile communications testing
Keithley’s Growing RF Line
The Model 2910 is the latest addition to our expanding RF/wireless test offering. In fact, Keithley serves many stages within the wireless industry, starting with our automated DC/RF parametric test systems for wafer-level testing. Component manufacturers often choose Series 2400 and 2600 SourceMeter RFICs. Keithley’s high speed power supplies and battery/charger simulators are widely used in board-level handset testing and our THD Multimeters and Audio Analyzing DMMs are popular choices for audio test systems. We also have a broad array of RF/microwave signal routing solutions, in both standard and custom configurations, ranging from stand-alone switches and simple plug-in modules for multimeters to fully integrated turnkey solutions designed for production test applications.
®
instruments for high speed DC testing of packaged parts like
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A GREATER MEASURE OF CONFIDENCE
Figure 3. The Model 2910 rear panel.
RF/MICROWAVE SWITCH & INST.
3
2910 RF Vector Signal Generator
FREQUENCY
FREQUENCY RA NGE:1 400MHz to 2.5GHz. FREQUENCY SET TING R ESOLUTION: 0.1Hz. FREQUENCY SW ITCHING TIME (to within 0.1ppm of final value):
1.6ms (modulation off ), 1.8ms (modulation on). 3.0ms (characteristic).
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FREQUENCY ACCURACY: Same as frequency reference + synth resolution term.
2
4
FREQUENCY NOTES
1. Over-ra nge operation is pr ovided: 325MHz to 2.7GHz. Pe rform ance at frequencies below 40 0MHz and above
2.5GHz is not specified.
2. List mode or sweep mode. Free run or hardware trigger. ALC off. Modulation on or off.
3. To within 0.1ppm of final va lue. Via remote comm and af ter receipt of end-of-opera tion indicator (EOI). ALC off. Modulation on or off.
4. Synthesi zer resolution term ≤5µHz.
INTERNAL FREQUENCY REFERENCE
AGING RATE: 1ppm /year. TEMPERATURE STABILITY: ±0.2ppm.
INTERNAL FREQUENCY REFERENCE NOTES
1. Total var iation r elative to 23°C. 0° to 50 °C ambient temperature ra nge.
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FREQUENCY REFERENCE OUTPUT
FREQUENCY: 10MHz ± reference accurac y.
Model 2910 Specifications
AMPLITUDE INTO 50 IMPEDANCE: 50
Ω: +5dBm ±3dB (characteristic).
Ω (characteristic).
EXTERNAL FREQUENCY REFERENCE INPUT
FREQUENCY: 1 to 20MHz.1 AMPLITUDE: Lock Range: –5 to +20dBm. IMPEDANCE: 50Ω (characteristic).
EXTERNAL FREQUENCY REFERENCE INPUT NOTES
1. On 10Hz bou ndaries: F acceptable.
2. For optimum phase noise 0 to +10dBm.
= 1MHz + n * 10H z. Reference accu racy ±1ppm. Sine or square wave inputs
ref
2
AMPLITUDE
AMPLITUDE LEVEL RANGE (CW): –12 0 to +13dBm. AMPLITUDE LEVEL RA NGE (GSM): –120 to +6dBm. AMPLITUDE LEVEL RANGE (EDGE): –120 to +6dBm. AMPLITUDE LEVEL RANGE (cdma2000): –120 to +3dBm. AMPLITUDE LEVEL RA NGE (WCDMA): –120 to +4dBm.
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AMPLITUDE SET TING R ESOLUTION: 0.01dB. CW ABSOLUTE AMPLITUDE LEV EL ACCURACY:
±0.5dB (+13 to –75dBm) (≤±0.3dB [+13 to –110dBm] typical).
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±0.6dB (–76 to –110dBm) (≤±0.3dB [+13 to –110dBm] typical).±1.0dB (–110 to –115dBm) (≤±0.6dB [–110 to –115dBm] typical).
RELATIVE AMPLITUDE ACCURACY (linearity): ±0.05dB (characteristic). AMPLITUDE REPEATABILITY: <±0.05dB. AMPLITUDE SWITCHING TIME:
1.6ms (modulation off ), 1.8ms (modulation on).3.0ms (characteristic).
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5
6
7
<2.6ms (modulation off) characteristic, <4.1ms (modulation on) characteristic.
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9
OUTPUT MATCH–VSWR: <1.35:1 (<1.25:1 characteristic). REV ERSE POW ER PROTECTION: +35dBm or 10VDC.
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AMPLITUDE NOTES
1. +3dBm ma x. for Pilot only. +0.5dBm m ax. for Fo rwa rd 9 chan nel.
2. +4dBm ma x. for CPICH only. –1.0dBm ma x. for Test Model 1 with 16 DPCH .
3. Power change over temperature: 0.015dB/°C (0° to 50°C).
4. –110dBm < P
5. ALC mode = fast. Modulation off. P
6. To within ±0.05dB of fi nal va lue (to within ±0.15dB for power changes that cr oss P level range specs for P
7. List mode or sweep mode. Free run or h ardwa re trigger. ALC of f.
8. Via remot e comma nd, af ter receipt of end-of -operation ind icator ( EOI). ALC off. Modulatio n on or off.
9. ALC = Auto ( Fast for modulation off, Sa mple & Hold for mo dulation on).
10. Up to 50VDC with external DC block option (2910-DCBLOCK).
< +2dBm. Modulation off.
out
values for each modulation.
max
< +2dBm.
out
–11dB). See amplitude
max
LIST AND STEP SWEEP MODES
FREQUENCY STEP/SWEEP: Start, Stop, Number of Points, Dwell Time. AMPLITUDE STEP/SWEEP: Start, Stop, Number of Points, Dwell Time. DWEL L TIME MIN./ MAX .: 0 to 1 second. Dwell time resolution = 0.1ms. ARBITRARY LIST: List of Frequency/Amplitude/Dwell Time set s. Max imum number of sets = 1000.
SPECTRAL PURITY
SSB PHASE NOISE: –117 dBc/Hz (<–124 dBc/Hz characteristic). SSB PHASE NOISE WITH LOW PHASE NOISE OPTION (2910-LPN):
–120 d Bc/Hz (<–124d Bc/Hz characteristic).–113 dBc/Hz (<–117dBc/Hz char acteristic).
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2
HARMONICS: –30dBc (Fc < 550MHz); –40dBc (Fc 550M Hz). NON-HARMONIC SPUR IOUS: <–55dBc (<–60dBc characteristic).
SPECTRAL PURITY NOTES
1. 20kHz offset at 1GHz carrier.
2. 20kHz offset at 2GHz carrier.
3. P
+4dBm.
out
4. Offset from carrier >10kHz. P
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= 0dBm. Modulation off.
out
(U.S. only)
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1
ARBITRARY WAVEFORM GENERATOR
WAVEFORM MEMORY: 64 megasamples (256MB). Complex samples: 16-bit I, 16-bit Q. MAXIMUM MODULATION BA NDWIDTH (internal modulation generation): 40MH z (character-
istic), <1dB flatness.
3
4
MINIMUM SEGMENT LENGTH: 100 samples. MAXIMUM SEGMENT LENGTH: 64 megasamples. MAXIMUM NUMBER OF SEGMENTS: 1,000.
A GREATER MEASURE OF CONFIDENCE
2910 RF Vector Signal Generator
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
Frequency (kHz)
Phase Noise (dBc/Hz)
0.01 0.1 1 10 100 1 000 10 000 100 000
DIGITAL MODULATION
EVM FOR W- CDMA: <1.2% rms (typical), 1.0% rms (characteristic). RHO FOR cdma200 0/cdmaOne: >0.9995 (typical), >0.9998 (characteristic). EVM FOR EDGE: <0.75% rms (typical), <0.5% rms (character istic). PHASE ER ROR FOR GSM: <0.2° rms (typical), <0.15° rms (characteristic). ACP FOR W-CDM A:
<–59dBc adjacent, <– 68dBc alternate (characteristic).
ACP FOR cdma2000/cdmaOne:
<–61dBc adjacent, <–84dBc a lternate (characteristic).
ORFS FOR EDGE (Offsets: 200kHz/400kHz/600kHz): <–37/–63/–69d Bc (characteristic).
<–37/–69/–76dBc (characteristic).
ORFS FOR GSM: <–35/–65/–69dBc (characteristic).
<–36/– 69/–76dBc (characteristic).
DIGITAL MODULATION NOTES
1. CPICH only.
2. Pilot only.
3. Adjacent: 5M Hz off set. Alternate: 10MHz of fset. CPICH only.
4. Adjacent: 75 0kHz offse t. Alternate: 1.98M Hz offset. Pi lot only. P
5. 400MHz ≤ F
6. F
= 1GHz. P
carrier
7. 4 00M H z ≤ F
8. F
= 1GHz. P
carrier
–50
–60
–70
–80
–90
–100
–110
Phase Noise (dBc/Hz)
–120
–130
–140
–150
Characteristic Single Side Band Phase Noise, Carrier Frequency = 1GHz
Characteristic Single Side Band Phase Noise, Carrier Frequency = 2GHz
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3
<–57dBc adjacent, <– 65dBc alternate (typical).
4
<–60dBc adjacent, <–75dBc alternate (typical).
7
8
= 0dBm.
2.5GHz. –10 P
carrier
= 0dBm.
out
2.5GHz. –10 P
carrier
= 0dBm.
out
0.01 0.1 1 10 100 1 000 10 000 100 000
+6dBm.
out
+6dBm.
out
out
Frequency (kHz)
(U.S. only)
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1
2
5
6
FM MODULATION FREQUENCY RANGE: 1Hz to 100kHz. FM MODULATION FR EQUENCY SETTING RESOLUTION: 1Hz. FM DEVIATION INTERNAL SINE WAVE ONLY: 0Hz to 1MHz. FM DISTORTION: 1.5% (character istic). AM MODULATION FREQUENCY RANGE: 1Hz to 100kHz. AM MODUL ATION FREQUENCY SETTING RESOLUTION INTERNAL SINE WAVE ONLY: 1Hz. AM MODULATION DEPTH: 0 to 100%. AM DISTORTION: <1% (characteristic).
ΦM MODULATION FREQUENCY R ANGE: 1Hz to 100kHz. ΦM MODULATION FREQUENCY SET TING R ESOLUTION: 1Hz. ΦM DEVIATION: 0 to 100 radians. ΦM DISTORTION: <1.5% (characteristic).
PM PULSE REPETITION RATE: 1Hz to 100k Hz.
1
PM PULSE REPETITION RATE SETTING RESOLUTION: 1Hz. PM MINIMUM PULSE W IDTH: 1.2µs.
2
PM ON-OFF R ATIO (characteristic): >50dB.3 >10 0dB. PM RISE/FALL TIME (10% to 90%) (characteristic): <600ns.5 <2µs.
4
6
TWO-TONE CW SEPARATION SETTINGS: 2Hz to 2MHz.
7
TWO-TONE CW 3rd ORDER INTERMODULATION (characteristic): –54 dBc. TWO-TONE CW CA RRIER FEEDTHROUGH (characterist ic): –65dBc. NOISE MODULATION BA NDWIDTH: 1kHz to 2MHz.
9
8
ANALOG MODULATION NOTES
1. Pulse period (1/Pulse Rate) will be set to nearest multiple of 0.4µs.
2. Pulse w idth will be set to nearest mu ltiple of 0.4µ s.
3. Pulse w idths (on or of f) <50 µs.
4. Pulse w idths ≥50µs. Va lid only when Pulse Modul ation is the only ac tive modulation t ype.
5. Pul se wid ths <50 µs.
6. Pulse w idths ≥50µs.
7. Relative to power of desired tones. P
8. Relative to amplitude of desired tones. P
9. 6dB double sided.
= 0dBm.
out
out
= 0dBm.
Model 2910 Specifications
EXTERNAL MODULATION
ANALOG MODULATION
MAXIMUM MODUL ATION BANDWIDTH (externa l I/Q inputs): 200MHz (characteristic), 3dB
bandwidth. Inputs applied directly to I/Q modulator. Optimal drive voltage ±0.8V. User needs to provide correction for IQ AC and DC amplitude and phase skew and offsets.
TRIGGER AND SYNCHRONIZATION INPUTS AND OUTPUTS
TRIGGER INPUT: TTL.
Trigger Modes:
• Free Run
• Trigger steps in sweep/list
• Trigger a sweep/list
• Trigger start of a rb waveform
Trigger Source:
• SCPI or front panel trigger
• Rising edge of ex ternal TTL input
• Falling edge of external TTL input
Trigger Delay:
• 0 to 1 second
EVEN SECOND CLOCK INPUT: TTL.
External even second clock.
SYNC OUTPUT: TTL
Choices for generating a sync pulse:
• Never
• On arb waveform wrap
• At end of each sweep in list or sweep
• At beginning of sweep or list
• At end of sweep or list
Rising/Falling:
• Sync out is on rising edge
• Sync out is on falling edge
EVEN SECOND CLOCK OUTPUT: TTL.
External even second clock.
RF/MICROWAVE SWITCH & INST.
A GREATER MEASURE OF CONFIDENCE
5
2910 RF Vector Signal Generator
GENERAL
DIMENSIONS (rack-ready, without handle and bumpers):
Height: 3U (133mm) (5.25˝). Width: Half-rack (213mm) (8.4˝). Depth: 464mm (18.25˝). Weig ht: 7.8 2kg (17.25 l b).
HOST INTERFACES: Computer control interfaces.
IEEE-488: IEEE-488.1 compliant. Supports IEEE-488.2 common commands and status
model topology.
LAN: 10/100BT Ethernet, RJ45. LXI-Class C compliant, no Auto MDIX.
USB: USB full speed. POWER SUPPLY: 100V to 240VAC, 50– 60Hz (automatically detected), 120VA max. COOLING: Forced air. Top, bottom and side intakes and rear ex haust. For proper cooling in a
rack, use Keithley 2910-RMK rack mount kit.
WAR RAN TY: 3 years. EMC: Conforms to European Union Directive 89/336/EEC, EN 61326-1. SAFET Y: Conforms to European Union Directive 73/23/EEC, EN 61010-1. ENVIRONMENT: For indoor use only.
Altitude: Ma ximum 2000 meters above sea level.
Specified Operating Temperature: 18°–28°C.
Operating Temperature (non-specified): 0° to 50°C.
Side Text
Storage (AC power off): –25°C to 65°C, 5 to 70% RH, non-condensing. ACCESSORIES SUPPLIED:
Cables and Connectors: Power cable.
Printed Documentation: Quick Start Guide.
Electronic Media: CD-ROMs containing 2910 System Help, utility programs and PDF files.
Model 2910 Specifications
Specifications describe the instrument’s warranted performance. Typical and characteristic values are not warranted but provide additional information regarding per forma nce that you should expect from the Model 2910 and are provided to a ssist in application of the Model 2910.
Specification (Warranted Performance):
Specifications indicate perfor mance that is warranted. All units are warranted to meet these per­formance specifications under the following conditions:
• Ambient operating temperature of 18° to 28°C, un less otherwise noted
• After specified warm-up time of 30 minutes.
Typical (Mean + 3 standard deviations):
Typical indicates performance t hat all units will meet under the following conditions:
• Ambient operating temperature of 23°C, unless otherwise noted.
• After specified warm-up time of 30 minutes. This performance is not warranted.
Characteristic (Mean or Expected Value):
Characteristic indicates perfor mance that a unit would be expected to exhibit under the following conditions:
• Ambient operating temperature of 18° to 28°C, un less otherwise noted.
• After specified warm-up time of 30 minutes. This performance is not warranted.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc.
All other trademarks and trade names are the property of their respective companies.
Specifications are subject to change without notice.
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RF/MICROWAVE SWITCH & INST.
© Copyright 2006 Keithley Instruments, Inc. Printed in the U.S.A. No. 2671 0406
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