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Model 2750 Multimeter/Switch System Specification


DC CHARACTERISTICS1

CONDITIONS: MED (1 PLC)2 or 10 PLC or MED (1 PLC) with Digital Filter of 10

ACCURACY: ±(ppm of reading + ppm of range) (ppm = parts per million) e.g., 10ppm = 0.001%)
FUNCTION RANGE RESOLUTION TEST CURRENT ±5% OR BURDEN VOLTAGE INPUT RESISTANCE OR OPEN CKT.VOLTAGE3 24 Hour4 23°C±1° 90 Day 23°±C5° 1 Year 23°C±5° TEMPERATURE COEFFICIENT 0°-18°C & 28°-50°C
Voltage11 100.0000 mV
1.000000 V
10.0000 V
100.0000 V
1000.000 V5
0.1 µV
1.0 µV
10 µV
100 µV
1 mV
>10 GΩ
>10 GΩ
>10 GΩ
10 MΩ± 1%
10 MΩ± 1%
15 + 30
15 + 6
10 + 4
15 + 6
20 + 6
25 + 35
25 + 7
20 + 5
35 + 9
35 + 9
30 + 35
30 + 7
30 + 5
45 + 9
50 + 9
(1 + 5)/°C
(1 + 1)/°C
(1 + 1)/°C
(5 + 1)/°C
(5 + 1)/°C
Resistance6,8 1.000000 Ω
10.00000 Ω
100.0000 Ω
1.000000 kΩ
10.00000 kΩ
100.0000 kΩ
1.000000 MΩ23
10.00000 MΩ7,23
100.0000 MΩ7,23
1 µΩ
10 µΩ
100 µΩ
1 mΩ
10 mΩ
100 mΩ
1.0 Ω
10 Ω
100 Ω
10 mA
10 mA
1 mA
1 mA
100 µA
10 µA
10 µA
0.7 µA // 10MΩ
0.7 µA // 10MΩ
5.9 V
5.9 V
12.2 V
12.2 V
6.8 V
12.8 V
12.8 V
7.0 V
7.0 V
80 + 40
20 + 20
20 + 20
20 + 6
20 + 6
20 + 6
20 + 6
150 + 6
800 + 30
80 + 40
80 + 20
80 + 20
80 + 6
80 + 6
80 + 10
80 + 10
200 + 10
2000 + 30
100 + 40
100 + 20
100 + 20
100 + 6
100 + 6
100 + 10
100 + 10
400 + 10
2000 + 30
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(95 + 1)/°C
(900 + 1)/°C
Dry Circuit Resistance21 1.000000 Ω
10.00000 Ω
100.0000 Ω
1.000000 kΩ
1 µΩ
10 µΩ
100 µΩ
1 mΩ
10 mA
1 mA
100 µA
10 µA
20mV
20mV
20mV
20mV
80 + 40
25 + 40
25 + 40
25 + 90
80 + 40
80 + 40
90 + 40
180 + 90
100 + 40
100 + 40
140 + 40
400 + 90
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
(8 + 1)/°C
Continuity (2W)24 1.000 kΩ 100 mΩ 1 mA 12.2 V 40 + 100 100 + 100 100 + 100 (8 + 1)/°C
Current 20.00000 mA
100.0000 mA
1.000000 A
3.000000 A
10 nA
100 nA
1.0 µA
10 µA
<0.2 V
<0.1 V
<0.5 V9
<1.5 V9
60 + 30
100 + 300
200 + 30
1000 + 15
300 + 80
300 + 800
500 + 80
1200 + 40
500 + 80
500 + 800
800 + 80
1200 + 40
(50 + 5)/°C
(50 + 50)/°C
(50 + 5)/°C
(50 + 5)/°C
Channel (Ratio)10 Ratio Accuracy = Accuracy of selected Channel Range + Accuracy of Paired Channel Range
Channel (Average)10 Average Accuracy = Accuracy of selected Channel Range + Accuracy of Paired Channel Range

TEMPERATURE19

(Display in °C, °F, or K. Exclusive of probe errors.) Thermocouples (Accuracy based on ITS-90.)

Type RANGE RESOLUTION 90 Day/1 Year (23°C ±5°C) Type Range Resolution Relative to Simulated Reference Junction Using 77xx Module Temperature Coefficient 0°-18°C & 28°-50°C
J -200 to +760°C 0.001°C 0.2°C 1.0°C 0.03°C/°C
K -200 to +1372°C 0.001°C 0.2°C 1.0°C 0.03°C/°C
N -200 to +1300°C 0.001°C 0.2°C 1.0°C 0.03°C/°C
T -200 to +400°C 0.001°C 0.2°C 1.0°C 0.03°C/°C
E -200 to +1000°C 0.001°C 0.2°C 1.0°C 0.03°C/°C
R 0 to +1768°C 0.1°C 0.6°C 1.8°C 0.03°C/°C
S 0 to +1768°C 0.1°C 0.6°C 1.8°C 0.03°C/°C
B +350 to +1820°C 0.1°C 0.6°C 1.8°C 0.03°C/°C
4-Wire RTD: (100Ω platinum [PT100], D100, F100, PT385, PT3916, or user type, Offset compensation On)
-200° to 630°C 0.01°C 0.06°C 0.03°C/°C
Thermistor: (2.2kΩ, 5kΩ, and 10kΩ)20
-80° to 150°C 0.01°C 0.08°C 0.02°C/°C

DC SYSTEM SPEEDS15,18

RANGE CHANGES16: 50/s (42/s).
FUNCTION CHANGES16: 50/s (42/s).
AUTORANGE TIME16: <30ms.
ASCII READINGS TO RS-232 (19.2k BAUD): 55/s.
MAX. INTERNAL TRIGGER RATE: 2000/s.
MAX. EXTERNAL TRIGGER RATE: 375/s.

DC MEASUREMENT SPEEDS15

Single Channel, 60Hz (50Hz) Operation

FUNCTION DIGITS READINGS/s PLCs
DCV, DCI, Ω(<10M),Thermocouple,Thermistor 6.512,16
6.516
6.512,16
5.512,16
5.512,16
5.517
4.517
5
35
45
150
300
500
2500
(4)
(28)
(36)
(120)
(240)
(400)
(2000)
10
1
1
0.1
0.1
0.1
0.01
4WΩ (<10M) 6.516
6.516
5.517
1.4
15
33
(1.1)
(12)
(25)
10
1
0.1
4WΩ 0Comp, RTD22 6.516
6.516
5.516,17
0.9
8
18
(0.7)
(6.4)
(14.4)
10
1
0.1
Channel (Ratio),Channel (AVG) 6.516
6.516
5.517
2.5
15
25
(2)
(12)
(20)
10
1
0.1

Multiple Channels Into Memory15,18,25

7703 and 7710 Scanning DCV 230/s
7703 and 7710 Scanning with Limits or Time Stamp On 230/s
7703 and 7710 Scanning DCV alternating 2WΩ 55/s
7710 Scanning Temperature (T/C) 90/s
7700 and 7708 Scanning Temperature (T/C) 50/s

Multiple Channels Into and Out of Memory15,16,17,18,25

7703 and 7710 Scanning DCV 200/s
7703 and 7710 Scanning with Limits or Time Stamp On 200/s
7703 and 7710 Scanning DCV alternating 2WΩ 45/s
7710 Scanning Temperature (T/C) 85/s
7702 Scanning DCV 65/s
7700 and 7708 Scanning Temperature (T/C) 50/s

DC SPEED vs. NOISE REJECTION

Rate Filter Readings/s12 Digits RMS Noise 10V Range NMRR CMRR14
10 50 0.1(0.08) 6.5 <1.2 µV 110 dB13 140 dB
1 Off 15(12) 6.5 <4 µV 90 dB13 140 dB
0.1 Off 500(400) 5.5 <22 µV - 80 dB
0.01 Off 2500(2000) 4.5 <150 µV - 80 dB

DC MEASUREMENT CHARACTERISTICS

DC Volts

A-D LINEARITY: 1.0 ppm of reading + 2.0 ppm of range.
INPUT IMPEDANCE:
     100mV-10V Ranges: Selectable >10GΩ// with <400pF or 10M&38486; ±1%.
     100V, 1000V Ranges: 10MΩ ±1%.
     Dry Circuit: 100kΩ ±1% // <1µF.
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

MAX 4WΩ LEAD RESISTANCE: 80% of range per lead (Dry Ckt Mode). 5Ω per lead for 1Ω range, 10% of range for 10Ω, 100Ω and 1kΩ ranges; 1kΩ per lead for all other ranges.
OFFSET COMPENSATION: Selectable on 4WΩ, 1Ω, 10Ω, 100Ω, 1kΩ, and 10kΩ ranges.
CONTINUITY THRESHOLD: Adjustable 1 to 1000Ω.
INPUT PROTECTION: 1000V, all Source Inputs, 350V Sense Inputs, 300V with plug-in modules.

DC Current

SHUNT RESISTORS: 100mA-3A, 0.1Ω. 20mA, 5Ω.
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 ±200Ω.
EARTH ISOLATION: 500V peak, >10GΩ and <300pF any terminal to chassis.

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, 1Ω and Dry Circuit Ω 40ppm, 10→<1MΩ 2ppm, 20mA and 1A 10ppm, 100mA 40ppm.
3. ±2% (measured with 10MΩ input resistance DMM, >10GΩ DMM on 10MΩ and 100MΩ ranges). For Dry Circuit Ω, ±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 Ω, 1Ω 10Ω, and 100Ω with offset compensation on. 77xx plugin modules with LSYNC and offset compensation on.With offset compensation on OPEN CKT. VOLTAGE is 12.8V. For 2-wire Ω add 1.5Ω to “ppm of range” uncertainty. 1Ω 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 kΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ
All Modules: 220 ppm 2200 ppm
7701, 7703, 7707, and 7709 Modules: 10 ppm 100 ppm 1000 ppm 1% 10%
7706, 7708 Modules: 5 ppm 50 ppm 500 ppm 5000 ppm 5%
7710 Model 23°C ±5°C: 11 ppm 110 ppm 1100 ppm 1.1% 11%
7710 Model Temp Coeff. >28°→50°C 0.3 ppm/°C 3 ppm/°C 30 ppm/°C 0.03 ppm/°C 0.3 ppm/°C

9. Add 1.5V when used with plug-in modules.
10. For RATIO, DCV only. For AVERAGE, DCV and Thermocouples only. Available with plugin modules only.
11. Add 6µV to "of range" uncertainty when using Models 7701, 7703, and 7707, 3µV for Models 7706, 7709, and 7710.
12. Auto zero off.
13. For LSYNC On, line frequency ±0.1%. For LSYNC Off, use 60dB for ≥ 1PLC.
14. For 1kΩ 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 (reading element only).
17. Sample count = 1000 (into memory buffer), auto zero off.
18. Auto zero off, NPLC = 0.01.
19. Additional Uncertainty

Type RANGE 7710 Module Using CJC
J 0 to +760°C 1.5°C
K 0 to +1372°C -
N 0 to +1300°C 0.5°C
T 0 to +400°C 0.5°C
E 0 to +1000°C 0.5°C
R +400 to +1768°C 0.9°C
S +400 to +1768°C 0.9°C
B +1100 to +1820°C 0.9°C
Plug-In Modules
Type RANGE Front Terminals Sim. Ref. Junction 7709 Sim. Ref. Junction 7701, 7703, 7707 Sim. Ref. Junction 7700 and 7708 Using CJC 7706 Using CJC 7710 Using CJC
J -200 to 0°C 0.1 0.1 0.3 0.8 1.6 4.5
K -200 to 0°C 0.2 0.2 0.4 0.8 1.6 1
N -200 to 0°C 0.3 0.3 0.6 0.8 1.6 2.5
T -200 to 0°C 0.2 0.1 0.4 0.8 1.6 2.5
E -200 to 0°C - 0.1 0.3 0.8 1.6 2.5
R 0 to +400°C 0.4 0.6 1.2 0.5 1.0 2.2
S 0 to +400°C 0.4 0.6 1.2 0.5 1.0 2.2
B +350 to +1100°C 0.8 0.3 1.7 0.5 1.0 2.2

20. For lead resistance >0Ω, add the following uncertainty/Ω for measurement temperatures of:

70°–100°C 100°–150°C
2.2 kΩ (44004) 0.22°C 1.11°C
5.0 kΩ (44007) 0.10°C 0.46°C
10 kΩ (44006) 0.04°C 0.19°C

21. For 4-wire Ω only, offset compensation on, LSYNC on.
22. For Dry Circuit 1kΩ range, 2 readings/s max.
23. For Front Inputs, add the following to Temperature Coefficient "ppm of reading" uncertainty: 1MΩ 25ppm, 10MΩ 250ppm, 100MΩ 2500ppm. Operating environment specified for 0°C to 50°C and 50%.
24. Front panel resolution is limited to 0.1Ω.
25. Single card installed in mainframe.

AC SPECIFICATIONS1

Accuracy: ±(% of reading + % of range), 23°C ±5°C
Function Range Resolution Calibration Cycle 3 Hz - 10 Hz13 10 Hz - 20 kHz 20 kHz - 50 kHz 50 kHz - 100 kHz 100 kHz - 300 kHz
Voltage2 100.0000 mV
1.000000 V
10.00000 V
100.0000 V
750.000 V
0.1 µV
1.0 µV
10 µV
100 µV
1.0 mV
90 Days (all ranges)
1 Year (all ranges)
(Temp. Coeff.)/°C3
0.35 + 0.03
0.35 + 0.03
0.035 + 0.003
0.05 + 0.03
0.06 + 0.03
0.005 + 0.003
0.11 + 0.05
0.12 + 0.05
0.006 + 0.005
0.6 + 0.08
0.6 + 0.08
0.01 + 0.006
4.0 + 0.5
4.0 + 0.5
0.03 + 0.01
Current2 1.000000
3.0000014
1.0 µA
10 µA
90 Day/1 Yr
(Temp. Coeff.)/°C3
3 Hz-10 Hz
0.30 + 0.04
0.35 + 0.06
0.035 + 0.006
10 Hz-3 kHz
0.10 + 0.04
0.15 + 0.06
0.015 + 0.006
3 kHz-5kHz
0.14 + 0.04
0.18 + 0.06
0.015 + 0.006
Frequency and Period4 100 mV to 750 V 0.333 ppm
3.33 ppm
3.33 ppm
90 Day/1 Yr Accuracy ±(ppm of reading + offset ppm) (3 Hz-500 kHz) (333 ms-2 µs)
80 ppm + 0.333 ppm (SLOW, 1s gate)
80 ppm + 3.33 ppm (MED, 100ms gate)
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 FACTOR5: 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 CMRR6: 70dB.
VOLT HERTZ PRODUCT15: ≤8 × 107 Volt-Hz.

AC MEASUREMENT SPEEDS7,8

Single Channel, 60Hz (50Hz) Operation

Function Digits Readings/s Rate Bandwidth
ACV, ACI 6.5
6.5
6.59
2s/Reading
4.8 (4)
40 (32)
SLOW
MED
FAST
3 Hz-300 kHz
30 Hz-300 kHz
300 Hz-300 kHz
Frequency,Period 6.5
5.5
4.5
4.510
1 (1)
9 (9))
35 (35)
65 (65)
SLOW
MED
FAST
FAST
3 Hz-300 kHz
30 Hz-300 kHz
300 Hz-300 kHz
300 Hz-300 kHz
Multiple Channel Into Memory10,11

7710 SCANNING ACV: 180/s.
7710 Scanning ACV with Auto Delay On: 2s/reading.

AC SYSTEM SPEEDS7,9,11

RANGE CHANGES12: 4/s (3/s).
FUNCTION CHANGES12: 4/s (3/s).
AUTORANGE TIME: < 3s. ASCII READINGS TO RS-232 (19.2k baud): 50/s.
MAX. INTERNAL TRIGGER RATE: 300/s.
MAX. EXTERNAL TRIGGER RATE: 250/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. For sinewave inputs, frequency must be >100Hz.
5. Applies to non-sine waves >5Hz and <500Hz. (Guaranteed by design for Crest Factors >4.3)
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. Includes measurement and binary data transfer out GPIB (reading element only).
9. Auto Zero off.
10. Sample count = 1000 (into memory buffer).
11. DETector:BANDwidth 300 with nPLC = 0.01.
12. Maximum useful limit with trigger delay = 175ms.
13. 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.
14. For signal levels >2.2A, add additional 0.4% to "of reading" uncertainty.
15. 750Vac range limited to 707Vrms and 85KHz (sinewave input) or 8 × 107 Volt-Hz.

GENERAL SPECIFICATIONS

EXPANSION SLOTS: 5.
POWER SUPPLY: 100V / 120V / 220V / 240V.
LINE FREQUENCY: 50Hz to 60Hz and 400Hz, automatically sensed at power-up.
POWER CONSUMPTION: 80VA.
OPERATING ENVIRONMENT: Specified for 0°C to 50°C. Specified to 80% RH at 35°C. Altitude up to 2000 meters.
STORAGE ENVIRONMENT: -40°C to 70°C.
BATTERY: Lithium battery-backed memory, 3 years @ 23°C.
EMC: Conforms to European Union EMC Directive.
SAFETY: Conforms to European Union Low Voltage Directive.
VIBRATION: MIL-PRF-28800F Class 3, Random.
WARM-UP: 2 hours to rated accuracy.
DIMENSIONS:
      Rack Mounting: 89mm high × 485mm wide × 370mm deep (3.5 in. × 19 in. × 14.563 in.).
      Bench Configuration (with handle and feet): 104mm high × 485mm wide × 370mm deep (4.125 in. × 19 in. × 14.563 in.).
SHIPPING WEIGHT: 13kg (28 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: 110,000 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:
      GPIB (IEEE-488.2) and RS-232C.
      SCPI (Standard Commands for Programmable Instruments)
ACCESSORIES SUPPLIED: Model 1751 Safety Test Leads, Product Information CD-ROM, and hardcopy User’s Manual. Software CD-ROM with IVI/VISA drivers for VB, VC/C++, LabVIEW, TestPoint, and LabWindows/CVI, and free runtime startup software.
ACCESSORIES AVAILABLE:       4288-7 Rack Mount Rear Support Kit
      77XX Modules
      Extended Warranty
      ExcelLINX-1A (Excel add-in datalogger software)
      TestPointTM Software Development Package
SOFTWARE: Windows 98, NT, 2000, ME, and XP compatible.