Atec Keithley-2700 Series - Manual (Page 7)

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(U.S. only)
A Greater Measure of Confidence
DC NoTEs
1 . 20% overrange except on 1000V and 3A .
2 . Add the following to “ppm of range” uncertainty; 100mV 15ppm; 1V and 100V 2ppm; for Model 2750 1
W and Dry Circuit
W 40ppm; 10→1MW 2ppm, for Models 2700/2701 100W 30ppm, 20mA and 1A 10ppm, 100mA 40ppm .
3 . ±2% (measured with 10M W input resistance DMM, >10GW DMM on 10MW and 100MW ranges) . For Dry Circuit W,
±25% with Input HI connected to Sense HI; with Sense HI disconnected add 30mV .
4 . Relative to calibration accuracy .
5 . For signal levels >500V, add 0 .02ppm/V uncertainty for portion exceeding 500V .
6 . Specifications are for 4-wire
W, 1W, 10W, and 100W with offset compensation on . With 77XX plug-in modules, LSYNC
on . With offset compensation on, OPEN CKT . VOLTAGE is 12 .8V . For 2-wire W add 1 .5W to “ppm of range” uncertainty .
1 W range is 4-wire only .
7 . Must have 10% matching of lead resistance in Input HI and LO .
8 . Add the following to “ppm of reading” uncertainty when using plug in modules:
10 k W 100 k W 1 M W 10 M W 100 M W
All Modules: 220 ppm 2200 ppm
7701, 7703, 7707, 7709 Modules: 10 ppm 100 ppm 1000 ppm 1% 10%
7706, 7708, 7710 Modules: 5 ppm 50 ppm 500 ppm 5000 ppm 5%
7710 Module 23°C ±5°C: 11 ppm 110 ppm 1100 ppm 1 .1% 11%
9 . Add 1 .5V when used with plug in modules .
10 . For RATIO, DCV only . For AVERAGE, DCV, and Thermocouples only . Avail able with plug in modules only .
11 . Add 6µV to “of range” uncertainty when using Models 7701, 7703, and 7707, and 3µV for Models 7706 and 7709 .
12 . Auto zero off .
13 . For LSYNC On, line frequency ±0 .1 % . For LSYNC Off, use 60dB for
≥ 1PLC .
14 . For 1k W unbalance in LO lead . AC CMRR is 70dB .
15 . Speeds are for 60Hz (50Hz) operation using factory defaults operating conditions (*RST) . Autorange off, Display off,
Limits off, Trigger delay = 0 .
16 . Speeds include measurements and binary data transfer out the GPIB or ASCII data transfer for Ethernet and RS-232
(reading element only) .
17 . Sample count = 1000, auto zero off (into memory buffer) .
18 . Auto zero off, NPLC = 0 .01 (Models 2700 and 2750), NPLC = 0 .002 (Model 2701) .
19 . Additional Uncertainty:
Plug-In Modules
front Terminals 7709 7701, 7703, 7707 7700, 7708, 7706
simulated simulated simulated 7710 using using
Type range ref. Junction ref. Junction ref. Junction CJC CJC
J –200 to 0°C 0 .1 0 .1 0 .3 0 .8 1 .6
K –200 to 0°C 0 .2 0 .2 0 .4 0 .8 1 .6
N –200 to 0°C 0 .3 0 .3 0 .6 0 .8 1 .6
T –200 to 0°C 0 .2 0 .1 0 .4 0 .8 1 .6
E –200 to 0°C – 0 .1 0 .3 0 .8 1 .6
R 0 to +400°C 0 .4 0 .6 1 .2 0 .5 1 .0
S 0 to +400°C 0 .4 0 .6 1 .2 0 .5 1 .0
B +350 to +1100°C 0 .8 0 .3 1 .7 0 .5 1 .0
20 . For lead resistance >0 W, add the following uncertainty/W for measurement temperatures of:
70°–100°C 100°–150°C
2.2 k W (44004) 0 .22°C 1 .11°C
5.0 k W (44007) 0 .10°C 0 .46°C
10 k W (44006) 0 .04°C 0 .19°C
21 . For 4-wire W only, offset compensation on, LSYNC on .
22 . For Dry Circuit 1k W range, 2 readings/s max .
23 . For 2750 Front Inputs, add the following to Temperature Coefficient “ppm of reading” uncertainty: 1M W 25ppm, 10MW
250ppm, 100M W 2500ppm . Operating environment specified for 0°C to 50°C and 50% RH at 35°C .
24 . Model 2750 only .
25 . Front panel resolution is limited to 0 .1 W .
DC sPEED vs. NoIsE rEJECTIoN
readings/s 12
rMs Noise
10V range
rate filter Digits 2700,2750 2701 NMrr CMrr 14
10 50 0 .1 (0 .08) 6 .5 <1 .2 µV <2 .5 µV 110 dB 13 140 dB
1 Off 15 (12) 6 .5 <4 µV <6 µV 90 dB 13 140 dB
0 .1 Off 500 (400) 5 .5 <22 µV <40 µV — 80 dB
0 .01 Off 2500 (2000) 4 .5 <150 µV <300 µV — 80 dB
0 .002 Off 3500 (2800) 3 .5 — <1 mV — 60 dB
DC MEasurEMENT CHaraCTErIsTICs
DC VolTs
A-D LINEARITy: 2 .0 ppm of reading + 1 .0 ppm of range .
INPUT IMPEDANCE:
100mV–10V Ranges: Selectable >10G W // with <400pF or 10MW ±1% .
100V, 1000V Ranges: 10M W ±1% .
Dry Circuit: 100k W ± 1% // <1µF .
EARTH ISOLATION: 500V peak, >10G W and <300pF any terminal to chassis .
INPUT BIAS CURRENT: <75pA at 23°C .
COMMON MODE CURRENT: <500nApp at 50Hz or 60Hz .
AUTOzERO ERROR: Add ±(2ppm of range error + 5µV) for <10 minutes and
±1°C .
INPUT PROTECTION: 1000V, all ranges . 300V with plug in modules .
rEsIsTaNCE
MAXIMUM 4W W LEAD RESISTANCE: 80% of range per lead (Dry Ckt mode) . 5W
per lead for 1 W range; 10% of range per lead for 10W, 100W, and 1kW ranges;
1k W per lead for all other ranges .
OFFSET COMPENSATION: Selectable on 4W W, 1W, 10W, 100W, 1kW, and
10k W ranges .
CONTINUITy THRESHOLD: Adjustable 1 to 1000 W.
INPUT PROTECTION: 1000V, all Source Inputs, 350V Sense Inputs . 300V with
plug-in modules .
DC CurrENT
SHUNT RESISTORS: 100mA–3A, 0 .1 W . 20mA, 5W .
INPUT PROTECTION: 3A, 250V fuse .
THErMoCouPlEs
CONVERSION: ITS-90 .
REFERENCE jUNCTION: Internal, External, or Simulated (Fixed) .
OPEN CIRCUIT CHECK: Selectable per channel . Open >11 .4k
W ±200W .
2700, 2701,
2750
Multimeter/Data Acquisition/
Switch Systems
aC sPECIfICaTIoNs 1
Calibration Cycle
accuracy: ±(% of reading + % of range), 23°C ± 5°C
function range resolution 3 Hz–10 Hz 10 Hz–20 kHz 20 kHz–50 kHz 50 kHz–100 kHz 100 kHz–300 kHz
Voltage 2
100 .0000 mV 0 .1 µV
90 Days (all ranges) 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
10 .00000 V 10 µV
1 Year (all ranges) 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
750 .000 V 1 .0 µV
(Temp. Coeff.)/°C 3 0 .035 + 0 .003 0 .005 + 0 .003 0 .006 + 0 .005 0 .01 + 0 .006 0 .03 + 0 .01
Current 2
3 Hz–10 Hz 10 Hz–3 kHz 3 kHz–5 kHz
1 .000000 A 1 .0 µA
90 Day/1 Year
0 .30 + 0 .04 0 .10 + 0 .04 0 .14 + 0 .04
3 .00000 A 14 10 µA 0 .35 + 0 .06 0 .16 + 0 .06 0 .18 + 0 .06
(Temp. Coeff.)/°C 3 0 .035 + 0 .006 0 .015 + 0 .006
Frequency 4
and Period
(3 Hz–500 kHz) (333 ms–2 µs)
100 mV to 750 V
0 .333 ppm
90 Day/1 Year
100 ppm + 0 .333 ppm (SLOW, 1s gate)
3 .33 ppm 100 ppm + 3 .33 ppm (MED, 100ms gate)
33 .3 ppm 100 ppm + 33 .3 ppm (FAST, 10ms gate)
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