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
SPECIFICATIONS
SPEC-2701
HW 9/5/03
Revision C
Page 3 of 4
A 27457 Released SK 8/1602
B 27576 Revised SZ 4/15/03
C 28238 Revised SZ 9/5/03
HW 8/16/02
SZ 10/25/02
2701 Ethernet Multimeter/Data Acquisition System
AC SPECIFICATIONS
1
Accuracy: ±(% of reading + % of range), 23°C ±5°C
Function Range Resolution
Calibration
Cycle
3 Hz-
10 Hz
14
10 Hz-
20 kHz
8
20 kHz-
50 kHz
50 kHz-
100 kHz
100 kHz-
300 kHz
Voltage
2
100.0000 mV 0.1 µV 90 Days 0.35 + 0.03 0.05 + 0.03 0.11 + 0.05 0.6 + 0.08 4.0 + 0.5
1.000000 V 1.0 µV (all ranges)
10.00000 V 10 µV 1 Year 0.35 + 0.03 0.06 + 0.03 0.12 + 0.05 0.6 + 0.08 4.0 + 0.5
100.0000 V 100 µV (all ranges)
750.000 V 1.0 mV
(Temp. Coeff.)/°C
3
0.035 + 0.003 0.005 + 0.003 0.006 + 0.005 0.01 + 0.006 0.03 + 0.01
3 Hz-10 Hz 10 Hz-3 kHz 3 kHz-5kHz
Current
2
1.000000 A 1.0 µA 90 Day/1 Yr. 0.30 + 0.04 0.10 + 0.04 0.14 + 0.04
3.00000
15
A 10 µA 0.35 + 0.06 0.15 + 0.06 0.18 + 0.06
(Temp. Coeff.)/°C
3
0.035 + 0.006 0.015 + 0.006 0.015 + 0.006
Accuracy ±(ppm of reading + offset ppm)
(3 Hz-500 kHz) (333 ms-2 µs)
100 mV 0.333 ppm 90 Day/1 Yr. 80 ppm + 0.333 ppm (SLOW, 1s gate)
Frequency
4
and Period
to 3.33 ppm 80 ppm + 3.33 ppm (MED, 100ms gate)
750 V 33.3 ppm 80 ppm + 33.3 ppm (FAST, 10ms gate)
Additional Uncertainty ±(% of reading)
Low Frequency Uncertainty MED FAST
20Hz - 30Hz 0.3 —
30Hz - 50Hz 0 —
50Hz - 100Hz 0 1.0
100Hz - 200Hz 0 0.18
200Hz - 300Hz 0 0.10
> 300Hz 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: 1MΩ ±2% // by <100pF.
INPUT PROTECTION: 1000Vp or 400VDC, 300Vrms with plug-in modules.
AC Current
MEASUREMENT METHOD: AC-coupled, True RMS.
SHUNT RESISTANCE: 0.1Ω.
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
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
6.5 2s/Reading SLOW 3 Hz-300 kHz
6.5 4.8 (4) MED 30 Hz-300 kHz
ACV, ACI
6.5
9
40 (32) FAST 300 Hz-300 kHz
6.5 1 (1) SLOW 3 Hz-300 kHz
5.5 9 (9) MED 30 Hz-300 kHz
4.5 35 (35) FAST 300 Hz-300 kHz
Frequency,
Period
4.5
10
65 (65) FAST 300 Hz-300 kHz
Multiple Channel Into Memory
10,11
7710 SCANNING ACV: 440/s.
7710 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. INTERNAL TRIGGER RATE: 2800/s.
MAX. EXTERNAL TRIGGER RATE: 2000/s.
AC Notes
1. 20% overrange except on 750V and 3A.
2. Specifications are for SLOW mode and sine wave inputs >5% of range. SLOW and MED
are multi-sample A/D conversions. FAST is DETector:BANDwidth 300 with nPLC = 1.0.
3. Applies to 0°–18°C and 28°–50°C.
4. Specifications are for square wave inputs only. Input signal must be >10% of ACV range.
If input is <20mV on the 100mV range then the frequency must be >10Hz..
5. Applies to non-sine waves >5Hz and <500Hz. Crest factor greater than 4.3 is guaranteed
by design only.
6. For 1kΩ 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 (into memory buffer).
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).
14. Typical uncertainties. Typical represents two sigma or 95% of manufactured units
measure < 0.35% of reading and three sigma or 99.7% < 1.06% of reading.
15. For signal levels >2.2A, add additional 0.4% to “of reading” uncertainty.
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