MRC:
Indicates the type of test for which the item is designed.AQXY
Test Type For Which Designed:
Front resistance of crystal; back resistance of crystal; back current of crystal
MRC:
The testing functions such as range,sensitivity,output,and the like,for which the item is designed.AQXZ
Operating Test Capability:
Front resistance-not greater than 0.5 kilohm for a good crystal; back resistance-ratio of back to front resistance greater than 10 to 1 for a good crystal; back current-crystal should not indicate current greater than - crystal in21 and in23, in23a, in25, in21a and in23b, in21b, in26 we, in26 syl, in78 syl - current d. C. 0.400 ma, 0.300 ma, 0.250 ma, 0.175 ma, 0.125 ma, 0.110 ma, 0.230 ma, 0.160 ma
