While these power supplies are getting long in the tooth they can be a great bargain. As of the writing of this review I have purchased 3 of these supplies. As with these old supplies some may come with issues that were not caught when the unit was tested, such as bad cooling fans, etc. The units I have received so far had been serviced at some point before they were removed from service. The two I have received so far were very dusty on the inside, but compressed air fixes that issue. The second unit I received has a bad cooling fan but is easily replaced. If you intend on taking advantage of the HPIB functionality keep in mind that some of these units will be configured for either ARPS or SCPI control languages. The first unit I received was set for ARPS, the second was set to SCPI, it took me about 10 minutes to fix the issue when I had my "oh wait a minuet" moment. The unit pictured was the first one I had received, it's in very nice physical condition and works without issues. It has now become a part of my test and measurement setup.
The pakjening was great...it shipped on time A+...the divice was dusty after a lot of cleaning it powers up just fain...be aware that these power supplys are old and you may need to change some of the caps inside .... though it is very good power supply for the price it is a must have A+++ ...