Benbradley at 21:46, 2 June 2015

2015-06-02T21:46:47Z

← Older revision	Revision as of 21:46, 2 June 2015
(No difference)

Benbradley: Created by Ben Bradley

2015-06-02T21:41:40Z

Created by Ben Bradley

← Older revision		Revision as of 21:41, 2 June 2015
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	Created and written by Ben Bradley May 2, 02015		Created and written by Ben Bradley May 2, 02015


	Equipment on the Electronics Bench and Known To Work:		Equipment on the Electronics Bench and Known To Work:


	HP 211A Square Wave Generator s/n 829-09572 (large grey box) is on the electronics bench and works fine. It may not be within calibration, but frequency output sampled at a few places was within 5 percent. Dial is linear, goes 1 to 10, rane switch is from x1 to x100k for a range of 1Hz to 1MHz. Other controls: Symmetry, Amplitude for 600 ohm output (banana), amplitude for 75 ohm output (BNC), attenuator for 75 ohm output (0dB, -20dB, -40dB, -60dB). Tube-operated, takes about a minute to warm up after turning on.		HP 211A Square Wave Generator s/n 829-09572 (large grey box) is on the electronics bench and works fine. It may not be within calibration, but frequency output sampled at a few places was within 5 percent. Dial is linear, goes 1 to 10, rane switch is from x1 to x100k for a range of 1Hz to 1MHz. Other controls: Symmetry, Amplitude for 600 ohm output (banana), amplitude for 75 ohm output (BNC), attenuator for 75 ohm output (0dB, -20dB, -40dB, -60dB). Tube-operated, takes about a minute to warm up after turning on.
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	HP 712C DC Power Supply (serial # unknown)		HP 712C DC Power Supply (serial # unknown)


	Equipment In The Back, Known working:		Equipment In The Back, Known working:


	HP-200CD serial #605-64280 works well.		HP-200CD serial #605-64280 works well.
	No screws holding case on.		No screws holding case on.
	Has solid state rectifiers, no 5AR4, looks original.		Has solid state rectifiers, no 5AR4, looks original.


	Equipment In The Back, Almost or Partially Working:		Equipment In The Back, Almost or Partially Working:


	Heathkit VTVM/VOM # IM-10 no case		Heathkit VTVM/VOM # IM-10 no case
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	Meter movement cover has a high electrostatic charge, and this strongly affects		Meter movement cover has a high electrostatic charge, and this strongly affects
	movement operation. This needs to be fixed, but it's probably not worth doing unless it's an easy fix.		movement operation. This needs to be fixed, but it's probably not worth doing unless it's an easy fix.


	Equipment In The Back, Known Not To Work or Unknown:		Equipment In The Back, Known Not To Work or Unknown:


	HP-200CD serial # (on back chassis) 333-51626		HP-200CD serial # (on back chassis) 333-51626
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	HP 333A distortion analyzer (quantity two)		HP 333A distortion analyzer (quantity two)

	Heath SM-5248 distortion analyzer (newer/later Heath model, looks nice)		Heath SM-5248 distortion analyzer (newer/later Heath model, looks nice)

List of Donated Equipment - Revision history

Benbradley at 21:46, 2 June 2015

Benbradley: Created by Ben Bradley