Specifications A-3
General
Typical Noise Floor Measurement Specification
6
TYPICAL NOISE FLOOR
RMS (1 STDEV), 100 SAMPLES
RANGE
0.01 NPLC
0.1 NPLC
1.0 NPLC
10 NPLC
2.000000 nA
2 pA
1 pA
40 fA
15 fA
20.00000 nA
2 pA
1 pA
40 fA
15 fA
200.0000 nA
200 pA
100 pA
2 pA
500 fA
2.000000 µA
200 pA
100 pA
2 pA
500 fA
20.00000 µA
20 nA
10 nA
200 pA
50 pA
200.0000 µA
20 nA
10 nA
200 pA
50 pA
2.000000 mA
2 µA
1 µA
25 nA
5 nA
20.00000 mA
2 µA
1 µA
25 nA
5 nA
SOURCE CAPACITANCE: Stable to 10.0nF typical.
INPUT BIAS CURRENT
7
: 50fA max. @ 23°C.
INPUT VOLTAGE BURDEN
8
: 4.0mV max.
VOLTAGE SOURCE SLEW RATE: 3.0ms/V typical.
COMMON MODE VOLTAGE: 200VDC.
COMMON MODE ISOLATION: Typically 10
9
Ω
in parallel with 150nF.
OVERRANGE: 105% of measurement range.
MEMORY BUFFER: 6000 readings (two 3000 point buffers). Includes selected measured value(s) and time stamp.
PROGRAMMABILITY: IEEE-488 (SCPI-1995.0), RS-232, five user-definable power-up states plus factory default and *RST.
DIGITAL INTERFACE:
Enable: Active low input.
Handler Interface: Start of test, end of test, 3 category bits. +5V @ 300mA supply.
Digital I/O: 1 trigger input, 4 TTL/Relay Drive outputs (33V @ 500mA, diode clamped).
POWER SUPPLY: 100V/120V/220V/240V ±10%
LINE FREQUENCY: 50, 60Hz.
POWER DISSIPATION: 60VA.
WARRANTY: 1 year.
EMC: Complies with European Union Directive 89/336/EEC.
VIBRATION: MIL-T-28800F Random Class 3.
SAFETY: Complies with European Directive 73/23/EEC.
WARM-UP: 1 hour to rated accuracy.
DIMENSIONS: 89mm high
×
213mm wide
×
370mm deep (3
1
⁄
2
in
×
8
3
⁄
8
in
×
14
9
⁄
16
in). Bench configuration (with handle and feet): 104mm high
×
238mm wide
×
370mm deep (4
1
⁄
8
in
×
9
3
⁄
8
in
×
14
9
⁄
16
in).
WEIGHT: 23.1kg (10.5 lbs).
ENVIRONMENT: Operating: 0°–50°C, 70% R.H. up to 35°C non-condensing. Derate 3% R.H./°C, 35°–50°C. Storage: –25° to 65°C, non-condensing.
NOTES:
1. Speed = Normal (1.0 NPLC), Filter On.
2. 1 year.
3. Measured as
∆
V
in
/
∆
I
in
at full scale (and zero) input currents.
4. Dual channel, internal trigger, measure only, display off, Autorange off, Auto Zero off, source delay = 0, filters off, limits off, CALC5 and CALC6 off, 60Hz.
5. Measured as
∆
V
in
/
∆
I
in
at full scale (20mA) and zero load currents.
6. Noise floor measured as rms (1 standard deviation), 100 samples, Filter off, open (capped) input.
7. Specification by design.
8. Measured (at input triax) as
∆
V
in
at full scale (20mA) vs. zero input currents.
Specifications subject to change without notice.
Summary of Contents for 2500
Page 2: ...Contains Calibrating and Servicing Information Model 2500 Dual Photodiode Meter Service Manual...
Page 11: ......
Page 13: ......
Page 15: ......
Page 16: ...1 PerformanceVerification...
Page 28: ...2 Calibration...
Page 56: ...3 RoutineMaintenance...
Page 59: ...3 4 Routine Maintenance Model 2500 Service Manual...
Page 60: ...4 Troubleshooting...
Page 74: ...5 Disassembly...
Page 81: ...5 8 Disassembly Model 2500 Service Manual...
Page 82: ...6 ReplaceableParts...
Page 93: ...6 12 Replaceable Parts Model 2500 Service Manual...
Page 94: ...A Specifications...
Page 98: ...B CalibrationReference...
Page 108: ...C CalibrationProgram...
Page 117: ......
Page 119: ......
Page 120: ......
Page 121: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...
