User's Manual

INTRODUCTION
Specifications
1
05_07 LDT-5100 3
CHAPTER 1

Specifications
1
INPUTS
Power Supply +
12 to 18 Volts at 75 mA
2
+ 4.5 to 7 Volts at 2 A
3
Control Output On (Default) when power supplied; user can control
output on / off with TTL line (Low = output off)
Thermistor R Setting
4
External R
set
Internal R
set
Jumper selectable internal/external R
set
Thermistor R driven to match reference precision resistor across
connector pins 5, 6
50 kΩ adjustable 10 T pot
Thermistor Current Jumper selectable 10 µA / 100 µA
I
TE
Limit Jumper selectable: 250 mA, 500 mA, 1A, 1.5A, 2A
Limit Accuracy +
50 mA
TEC Gain 1 to 50; adjustable 1-turn pot
OUTPUTS
Output Type Bipolar, floating, constant current source
Current Range -2A to 2A
Compliance Voltage > 2 VDC
Stability (24 hours)
5
Internal R
set
+ 0.01
o
C
External R
set
+0.005
o
C
Temperature Coefficient
Internal R
set
0.01
o
C /
o
C (ambient)
External R
set
0.005
o
C /
o
C (ambient)
Thermistor Measurement Buffered output voltage: -5V to +5V
Transfer Function
100 µA range
10 µA range
10 kΩ / V
100 kΩ / V
Accuracy
100 µA range
10 µA range
+
50 Ω
+
500 Ω
I
TE
Measurement Buffered output voltage: -5V to +5V
Transfer Function
400 mA / V
Accuracy
+
40 mA