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HW
Rev. D
2/26/03
2520 Pulsed Laser Diode Test System
LASER DIODE PULSE OR DC CURRENT SOURCE SPECIFICATIONS
DRIVE CURRENT
OFF CURRENT
4
SOURCE
RANGE
PROGRAMMING
RESOLUTION
APPROX.
ELECTRICAL
RESOLUTION
ACURACY
1,6
± (% rdg. + mA)
2,3
RMS NOISE
(typical)
(1kHz-20MHz)
RANGE
PROGRAMMING
RESOLUTION
APPROX.
ELECTRICAL
RESOLUTION
ACURACY
1
± (% rdg. + mA)
0-500 mA
10 µA
8 µA
0.2 + 0.45
70 µA
0-15 mA
1 µA
7 nA typ.
0.2 + 0.45
0 – 1.0 A DC
0 – 5.0 A Pulse
100
µA 80
µA
0.2 + 4.5
800
µA
0-150 mA
10 µA
70 nA typ.
0.2 + 4.5
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C):
±
(0.15 x accuracy
specification)/°C.
PULSE ON TIME
19
:
500ns to 5ms, 100ns programming resolution.
PULSE OFF TIME
19
:
20µs to 500ms, 10µs programming resolution.
PULSE DUTY CYCLE
19, 20, 21
:
0 to 99.6% for
≤
1.0A;
0 to 4% for > 1.0A.
VOLTAGE COMPLIANCE:
3V to 10V, 10mV programming resolution
5
.
POLARITY:
1 quadrant source, polarity reversal available through internal
relay inversion.
OUTPUT OFF:
<200m
Ω
short across laser diode; measured at Remote Test
Head connector.
RISE/FALL
TIME
6,8,9,10
SETTING AND
RANGE
LOAD
7
PULSE
MODE
PULSE
OVERSHOOT
6 8 9
TYPICAL MAX.
500mA
10
Ω
¼ Watt
Fast
1.0%
55 ns
80 ns
500mA
10
Ω
¼ Watt
Slow
0.1%
1 µs
1.3 µs
5.00A
1.5
Ω
1 Watt
Fast
1.0%
100 ns
130 ns
5.00A
1.5
Ω
1 Watt
Slow
0.1%
1 µs
1.3 µs
LASER DIODE VOLTAGE MEASURE SPECIFICATIONS
RANGE
MINIMUM
RESOLUTION
ACURACY
± (% rdg. + volts)
1,12
RMS
NOISE
(typical)
13
5.00 V
0.33 mV
0.3% + 6.5 mV
60 µV
10.00 V
0.66 mV
0.3% + 8 mV
120 µV
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C):
±
(0.15 x accuracy specification)/°C.
MAX. LEAD RESOLUTION:
100
Ω
for rated accuracy.
INPUT IMPEDANCE:
2M
Ω
differential, 1M
Ω
from each input to common. Input bias current ±7.5µA max.
PHOTODIODE VOLTAGE BIAS SOURCE SPECIFICATIONS
(each channel)
RANGE:
0 to ±20VDC.
PROGRAMMING RESOLUTION:
10mV.
ACCURACY:
±(1% + 50mV).
CURRENT:
160mA max. with V-Bias shorted to I-Measure.
RMS NOISE (1kHz to 5MHz):
1mV typical.
PHOTODIODE CURRENT MEASURE SPECIFICATIONS
(each channel)
RANGE
MINIMUM
RESOLUTION
4
DC INPUT
IMPEDANCE
ACURACY
± (% rdg. + current)
1,2
RMS NOISE (typical)
3
10.00 mA
0.7 µA
< 10
Ω
0.3% + 20 µA
90 nA
20.00 mA
1.4 µA
< 6
Ω
0.3% + 65 µA
180 nA
50.00 mA
3.4 µA
< 3
Ω
0.3% + 90 µA
420 nA
100.00 mA
6.8 µA
< 2.5
Ω
0.3% + 175 µA
840 nA
TEMPERATURE COEFFICIENT (0°-18°C & 28°-50°C):
±
(0.15 x accuracy specification)/°C.
INPUT PROTECTION:
The input is protected against shorting to the associated channel’s internal bias
supply. The input is protected for shorts to external supplies up to 20V for up to 1 second with no damage,
although calibration may be affected.
SYSTEM SPEEDS
Reading Rates (ms)
15,16
Number of
Source Points
17
To Memory
To GPIB
1 5.3 6.8
10
[18]
9.5
18
100
[18]
48 120
1000
[18]
431
1170
GENERAL SPECIFICATIONS
DCFLOATING VOLTAGE:
User may float common ground up to
±10VDC from chassis ground.
COMMON MODE ISOLATION:
>10
9
Ω
.
OVERRANGE:
105% of range on all measurements and voltage
compliance.
SOURCE OUTPUT MODES:
Fixed DC Level
Fixed Pulse Level
DC Sweep (linear, log and list)
Pulse Sweep (linear, log and list)
Continuous Pulse (continuous – low jitter)
PROGRAMMABILITY:
-IEEE-488 (SCPI-1995.0), RS-232, 5 user-
definable power-up states plus factory default and *RST.
DIGITAL INTERFACE:
Safety Interlock
: External mechanical contact connector and removable
key switch.
Aux. Supply:
+5V @ 300mA supply.
Digital I/O:
2 trigger input, 4 TTL/Relay Drive outputs (33V @
500mA max., diode clamped).
Tlink:
6 programmable trigger input/outputs.
Pulse Trigger Out BNC:
+5V, 50
Ω
output impedance, output trigger
corresponding to current source pulse; pulse to trigger delay <100ns.
See Figure 3.
MAINS INPUT:
100V to 240V rms, 50-60Hz, 140VA.
WARRANTY:
1 year.
EMC:
Conforms to European Union Directive 89/336/EEC (EN61326-1).
SAFETY:
Conforms to European Union Directive 73/23/EEC (EN61010-
1) CAT 1.
VIBRATION:
MIL-PRF-28800F Class 3, Random.
WARM-UP:
1 hour to rated accuracy.
DIMENSIONS, WEIGHT:
Main Chassis, bench configuration (with handle & feet):
105mm
high × 238mm wide × 416mm deep (4 1/8 in. × 9 3/8 in. × 16 3/8
in.). 2.67kg (5.90 lbs).
Remote Test Head:
95mm high × 178mm deep (with interlock key
installed) × 216mm wide (3 1/2 in. × 7 in. × 8 1/2 in.). 1.23kg (2.70
lbs).
ENVIRONMENT:
Operating:
0°-50°C, 70% R.H. up to 35°C. Derate 3% R.H./°C, 35°-
50°C.
Storage:
-25° to 65°C.
Summary of Contents for 2520
Page 250: ...A Specifications ...
Page 254: ...B StatusandErrorMessages ...
Page 262: ...C DataFlow ...
Page 266: ...D IEEE 488BusOverview ...
Page 281: ...E IEEE 488andSCPI ConformanceInformation ...
Page 285: ...F MeasurementConsiderations ...
Page 308: ...G GPIB488 1Protocol ...
Page 312: ...H ExamplePrograms ...
Page 317: ...I ContinuousPulseMode ...