Avcom of Virginia

Frequently Asked Questions

PSA Questions

Q: How do I change my unit to work on 110 instead of 220 Volts or work on 220 instead of 110 Volts?
A: DO NOT ATTEMPT WITH THE UNIT PLUGGED IN!
  1. Remove rear panel (4) retaining screws in the 4 corners.
  2. Pull panel out far enough to access wires at the "line" fuse holder.
  3. Slide back the tube insulation and unsolder the wire at the "ring" terminal (Not the Red One at the tip).
  4. Select the proper wire for the input line voltage desired as follows: (for transformer with white bobbin only if bobbin is black or if you have questions please call or fax us)
    Orange = 100V
    White = 120V
    Blue = 220V
    Yellow = 240V
  5. Strip end of your selected wire, push through the insulation tube and solder it to ring terminal of line fuse holder. Slide insulating tube back over fuse holder.
  6. Check connector at high voltage board and then reinstall rear panel.
  7. Change line fuse if necessary. Use 1 Amp for 100V and 120V. Use .5 Amp for 220V or 240V.
  8. Field change of line voltage input is now complete.

ADA Questions

Q: Can I adjust the frequency on my analyzer with my computer when the ADA is connected?
A: No The ADA is a display adapter only and has no interactive features at this time.

MFC Questions

Q: Will an Avcom frequency extender work with my brand analyzer? (HP, Agilent, Tektronic)
A: Yes any of our frequency extenders will work with other brand spectrum analyzers. You must specify who the manufacture is, the model number, and the frequency range of that unit when ordering for another brand spectrum analyzer.

Q: What should I set the frequency offsets to when using an MFC?
A: Please use the below chart for the appropriate PSA when setting the offsets.  For more detailed procedures, contact technical support at (804) 794-2500.

MODEL   EXTENDER #   OFFSET
1727   1(5060)   +3300
1727   2(0610)   -3300
1727   2(0810)   -1500
1727   3(3242)   -5900
 
2400   1(5254)   +2900
2400   2(5759)   +3400
2400   3(0810)   -1500
 
45   1(3242)   +2200
 
37XP   1(4565)   +4500

Other Questions

Q: What AVSAC do I need for my CRT unit?
A: All CRT units use the AVSAC.

Q: What AVSAC do I need for my LCD unit?
A: All LCD units use the AVSAC II.
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