Keithley 2701, Service Manual

Page: 134 / 168

Keithley Instruments, Inc.
Cleveland, Ohio 44139
DRN.
CKD.
APP. DATE
DATE
DATE
PART NUMBER
LTR REVISIONS APP. DATE
FORM 28777A-SBG
BRUNING 40-21 62198-SBG
PURCHASED ITEM
SPECIFICATIONS
2701 Ethernet Multimeter/Data Acquisition System
HW 8/01/02
Revision A
Page 3 of 3
Additional Uncertainty ±(% of reading)
Low Frequency Uncertainty MED FAST
20 Hz - 30 Hz 0.3 —
30 Hz - 50 Hz 0 —
50 Hz - 100 Hz 0 1.0
100 Hz - 200 Hz 0 0.18
200 Hz - 300 Hz 0 0.10
>300 Hz 0 0
CREST FACTOR:
5
1 -2 2 - 3 3 - 4 4 - 5
Additional Uncertainty: 0.05 0.15 0.30 0.40
Maximum Crest Factor: 5 at full-scale.
AC MEASUREMENT CHARACTERISTICS
AC Volts
MEASUREMENT METHOD: AC-coupled, True RMS.
INPUT IMPEDANCE: 1M
Ω
±2% // by <100pF.
INPUT PROTECTION: 1000Vp or 400VDC. 300Vrms with plug in mod-
ules.
AC Current
MEASUREMENT METHOD: AC-coupled, True RMS.
SHUNT RESISTANCE: 0.1
Ω
.
BURDEN VOLTAGE: 1A <0.5Vrms, 3A <1.5Vrms. Add 1.5Vrms when used
with plug in modules.
INPUT PROTECTION: 3A, 250V fuse.
Frequency and Period 4
MEASUREMENT METHOD: Reciprocal Counting technique.
GATE TIME: SLOW 1s, MED 100ms, and FAST 10ms.
AC General
AC CMRR 6 : 70dB.
VOLT HERTZ PRODUCT: <= 8
×
10
7
.
AC MEASUREMENT SPEEDS 7,13
Single Channel, 60Hz (50Hz) Operation
Function Digits Readings/s Rate Bandwidth
ACV, ACI 6.5 2s/Reading SLOW 3 Hz–300 kHz
6.5 4.8 (4) MED 30 Hz–300 kHz
6.5 9 40 (32) FAST 300 Hz–300 kHz
Frequency, 6.5 1 (1) SLOW 3 Hz–300 kHz
Period 5.5 9 (9) MED 30 Hz–300 kHz
4.5 35 (35) FAST 300 Hz–300 kHz
4.5
10
65 (65) FAST 300 Hz–300 kHz
Multiple Channel 10,11
7703 SCANNING ACV : 180/s.
7703 Scanning ACV with Auto Delay on: 2s/reading.
AC SYSTEM SPEEDS
7, 9,11
RANGE CHANGES 12 : 4/s (3/s).
FUNCTION CHANGES
12
: 4/s (3/s).
AUTORANGE TIME: < 3s.
ASCII READINGS TO RS-232 (115.2k baud): 300/s.
MAX. EXTERNAL TRIGGER RATE: 2000/s.
Specifications are subject to change without notice.
AC Notes
1. 20 % overrange except on 750V and 3A.
2. Specification are for SLOW mode and sine wave inputs >5% of range. SLOW and MED are multi-sam-
ple A/D conversions. FAST is DETector:BANDwidth 300 with nPLC = 1.0.
3. Applies to 0°–18°C and 28°–50°C.
4. For square wave inputs >10% of ACV range, except 100mV range. 100mV range frequency must be
>10Hz if input is <20mV.
5. Applies to non-sine waves >5Hz and < 500Hz. Crest factor greater than 4.3 is guaranteed by design only.
6. For 1k
Ω
unbalance in LO lead.
7. Speeds are for 60Hz (50Hz) operation using factory defaults operating conditions (*RST). Autorange off,
Display off, Limits off, Trigger delay=0.
8. For ACV inputs at frequencies of 50 or 60Hz (
±10%) add the following to “% of Range” uncertainty:
100mV 0.25%, 1V 0.05%, 10V 0.13%, 100V 0.03%, 750V 0.01%.
9. Auto Zero off.
10. Sample count = 1000.
11. DETector:BANDwidth 300 with nPLC = 0.006.
12. Maximum useful limit with trigger delay = 175ms.
13. Includes measurement and data transfer out ethernet (Reading Element only). (100bTx Ethernet, 3
meter RJ-45 crossover cable, PIII-800, Windows version 98 SE, VB version 6.0, direct Winsocket
interface).
SPEC-2701
GENERAL SPECIFICATIONS:
EXPANSION SLOTS: 2.
POWER SUPPLY: 100V / 120V / 220V / 240V ±10%.
LINE FREQUENCY: 45Hz to 66Hz and 360Hz to 440Hz, automatically sensed at power-up.
POWER CONSUMPTION: 80VA.
OPERATING ENVIRONMENT: Specified for 0°C to 50°C. Altitude <2000m above Sea Level.
Specified to 80% RH at 35°C.
STORAGE ENVIRONMENT: –40°C to 70°C.
BATTERY: Lithium Ion battery-backed memory, 30 days of buffer storage @ 23°C and >4 hours
charge time. Battery lifetime: 3 years @ 23°C, 1.5 years @ 50°C.
WARRANTY: 3 years, excludes battery.
EMC: Conforms to European Union Directive 89/336/EEC EN61326-1.
SAFETY: Conforms to European Union Directive 73/23/EEC EN61010-1.
VIBRATION: MIL-PRF-28800F Class 3, Random.
WARM-UP: 2 hours to rated accuracy.
DIMENSIONS:
Rack Mounting : 89mm high
×
213mm wide
×
370mm deep (3.5 in
×
8.375 in
×
14.563 in).
Bench Configuration (with handle and feet): 104mm high
×
238mm wide
×
370mm deep
(4.125 in
×
9.375 in
×
14.563 in).
SHIPPING WEIGHT: 4.75kg (10 lbs.).
DIGITAL I/O: 2 inputs, 1 for triggering and 1 for hardware interlock.
5 outputs, 4 for Reading Limits and 1 for Master Limit. Outputs are TTL compatible or can
sink 250mA, diode clamped to 40V.
TRIGGERING AND MEMORY:
Window Filter Sensitivity: 0.01%, 0.1 %, 1%, 10%, or Full-scale of range (none).
Reading Hold Sensitivity: 0.01%, 0.1 %, 1%, or 10% of reading.
Trigger Delay: 0 to 99 hrs (1ms step size).
External Trigger Delay: <1ms.
Memory Size: 450,000 readings.
MATH FUNCTIONS: Rel, Min/Max/Average/Std Dev/Peak-to-Peak (of stored reading), Limit
Test, %, 1/x, and mX + b with user defined units displayed.
REMOTE INTERFACE:
Ethernet: RJ-45 connector, TCP/IP (Auto sensed 10bT or 100bTX) and RS-232C.
SCPI (Standard Commands for Programmable Instruments)
ACCESSORIES SUPPLIED: Model 1751 Safety Test Leads, Product Information CD-ROM,
Model 2701 Networking Manual, Model 2701 Getting Started Foldout, 3m cross over
ethernet cable. Software CD-ROM with IVI/VISA drivers for VB, VC/C++, LabVIEW,
TestPoint, and LabWindows/CVI, and free runtime startup software.
ACCESSORIES AVAILABLE:
77XX Modules
Extended Warranty
ExceLINX-1A (Excel add-in datalogger software)
TestPoint

Software Development Package
IP CONFIGURATION: Static or DHCP
PASSWORD PROTECTION: 11 characters
SOFTWARE: Windows 98, NT, 2000, ME, and XP compatible, Internet Explorer 5.0 or higher
required. Web pages served by 2701.