7.7 Model 3003 Heater and Output Conditioner 131
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7.7 Model 3003
Heater and Output
Conditioner
The Lake Shore Model 3003 heater output conditioner is a passive filter that reduces
the already low noise present in the heater output of the Model 335. The Model 3003
connects between the heater output terminals on the rear panel of a controller and a
resistive heater. See
FIGURE 7-3.
Specifications are as follows:
D Max Current:2 A
D Max Voltage:60 V
D Attenuation:50 or 60 Hz (line frequency): 20 dB
D 100 Hz and above (line frequency harmonics): 40 dB
D Enclosure Size: 144 mm wide × 72 mm long × 165 mm deep (5.7 × 2.8 × 6.5 in)
D Weight:1.6 kg (3.5 lb)
The Model 3003 is a passive filter and requires no external power supply. The High
and Low terminals on the controller must be connected to the High and Low termi
-
nals marked From Controller on the Model 3003. The binding posts or a dual banana
plug can be used to connect to the Model 3003. Precautions must be taken to ensure
the High and Low terminals are not reversed. A diode in the Model 3003 shorts the
heater output if the polarity of the terminals is reversed.
The High and Low terminals marked To Heater on the Model 3003 should be attached
to a resistive heater used for temperature control. The binding posts or a dual banana
plug can be used to connect to the Model 3003. The ground terminals on the
Model
3003 continue the shield if the heater cable is shielded.
FIGURE 7-3 Model 3003 heater output conditioner
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