Microplane 201 owner manual Power Termination, Mechanical

PREAMP END RECORDER END

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Figure 2. 600Ω BALANCED CABLE TERMINATION

B.POWER TERMINATION

1.A standard AC power cable is included. For safety, it is recommended that the cord be connected to a grounded outlet. In the event of noise from a ground loop, the audio ground can be isolated from the chassis ground by throwing the AUDIO GND switch on the rear panel of the preamplifier. (See paragraph 3)

2.AC input voltage settings can be adjusted for 100V, 120V, 220V and 240V operation at 50-60Hz. From the outside of the preamplifier, open the trap door next to the IEC power inlet with a small screwdriver. Carefully pull the voltage set cam straight out and then insert with the desired voltage showing. Do not try to rotate the cam while it is in the power input module. Replace the fuses with the proper value selected from the table below. Be sure to use a time delay or Slow-Blow fuse with a 250V rating

Voltage	100V	120V	220V	240V
Fuse rating	0.25A	0.25A	0.125A	0.125A

Figure 3. FUSE VALUE TABLE

3.In certain installations it may be desirable separate the preamplifier signal ground from the chassis and earth grounds. Noise inducing ground loops can be broken while retaining the safety feature of the grounded AC power cord. The 201 should not be operated with a ground lift or "cheater" plug on the AC power cord. To isolate the audio ground from the chassis ground simply set the AUDIO GND switch on the rear panel from EARTH to ISO.

C.MECHANICAL

1.The model 201 can be rack mounted in a standard 19" equipment rack. If desired the rack mount ears can be removed by removing the 3 #6-32 flat head

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