Keithley 2790 User Manual

HW 11/04/03
Rev. D
2790 SourceMeter

Switch System Specifications
MAINFRAME FUNCTION SPECIFICATION
DC System Speeds
14, 17
RANGE CHANGES
15
: 50/s (42/s).
FUNCTION CHANGES
15
: 50/s (42/s).
AUTORANGE TIME
15
: < 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 CHARACTERISTICS
DC Volts
A-D LINEARITY: 2.0 ppm of reading + 1.0 ppm of range.
INPUT IMPEDANCE:
100mV–10V Ranges: Selectable >10GΩ// with <400pF or
10MΩ ±1%.
100V, 1000V Ranges: 10MΩ ±1%.
INPUT BIAS CURRENT: <100pA at 23°C.
COMMON MODE CURRENT: <500nAp-p at 50Hz or 60Hz.
INPUT PROTECTION: Front, 1000V, Rear, 300V, 7702 card only.
Resistance
MAX 4WΩ LEAD RESISTANCE: 10% of range per lead for 100Ω and
1kΩ ranges; 1kΩ per lead for all other ranges.
OFFSET COMPENSATION: Selectable on 4WΩ, 100Ω, 1kΩ, and
10kΩ ranges.
CONTINUITY THRESHOLD: Adjustable 1 to 1000 Ω.
INPUT PROTECTION: Front, 1000V Source Inputs, 350V Sense
Inputs, Rear, 300V, 7702 card only.
DC Current
Shunt Resistors: 100mA–3A, 0.1Ω. 20mA, 5Ω.
Input Protection: 3A, 250V fuse.
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, 100Ω 30ppm, <1MΩ 2ppm, 10mA and 1A 10ppm,
100mA 40ppm.
3
±2% (measured with 10MΩ input resistance DMM, >10GΩ DMM on
10MΩ and 100MΩ ranges).
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, 100Ω with offset compensation on.
With offset compensation on, OPEN CKT. VOLTAGE is 12.8V. For 2-
wire Ω add 1Ω additional uncertainty.
7
Must have 10% matching of lead resistance in Input HI and LO. Test
current +0.7µA||10MΩ
8
Add the following to “ppm of reading” uncertainty when using plug in
modules:
10 kΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ
7702, 7751, 7752
220 ppm 2200 ppm
9
Add 1V when used with plug-in modules.
10
For RATIO, DCV only. For AVERAGE, DCV only. Available with
plug-in modules only.
11
Auto zero off.
12
For LSYNC On, line frequency ±0.1 %. For LSYNC Off, use 60dB for
≥ 1PLC.
13
For 1kΩ unbalance in LO lead.
14
Speeds are for 60Hz (50Hz) operation using factory defaults operating
conditions (*RST). Autorange off, Display off, Limits off, Trigger delay
= 0.
15
Speeds include measurements and binary data transfer out the GPIB.
16
Sample count = 1024, auto zero off.
17
Auto zero off, NPLC = 0.01.
18
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

Keithley 2790 Specifications

General

Brand	Keithley
Model	2790
Category	Switch
Language	English