The survey recorder is disclosed as being assembled in a rectangular shaped casing having a hinged cover. Stop means are provided on the hinge cover to prevent its closure in the event that the recording mechanism is not correctly engaged. An arm member which carries the recording head is pivotally mounted in the tape cartridge receptacle such that it can be swung down into operating engagement with the magnetic tape portion extending between the supply reel and the takeup reel of the tape cartridge. The tape recorder receptacle also has a plurality of alignment pins which correctly locate the tape cartridge relative to the recording head with respect to the horizontal, vertical and azimuth planes. A pressure roller is floatingly mounted on the outer end of the pivoted arm member so that when the arm member is brought down into its operating position the pressure roller will bear uniformly against the capstan to provide tape movement with improved alignment relative to the head in its movement therepast.
An electrical energy metering system includes a solid-state electrical energy meter with non-volatile factory calibration memory and non-volatile field calibration memory therein. The system also includes a programming unit, such as a hand-held computer, for programming the factory calibration memory with factory calibration parameters and for programming the field calibration memory with field calibration parameters obtained from field testing of the meter. The calibration parameters includes parameters relating to meter measurement accuracy such as full-load, light-load and lag calibration parameters. These parameters can be generated during periodic field tests and stored in the meter for retrieval at a later date, such as during a subsequent test of the meter. Because the meter is capable of retaining a plurality of calibration parameters from each field test, a chronological history of data relevant to meter accuracy can be stored in the meter and a paperless transfer of this data to a utility database can be achieved.
