| ACYN | AC Voltage Rating | 105.0 volts minimum 1ST alternate operating power rqmt |
| ACYN | AC Voltage Rating | 256.0 volts maximum 2ND alternate operating power rqmt |
| ACZB | Frequency Rating | 50.0 hertz minimum 1ST alternate operating power rqmt |
| ACZB | Frequency Rating | 60.0 hertz maximum 2ND alternate operating power rqmt |
| AJJX | Component Document Origin | Government |
| AJJY | Document Source | Federal Specifications (81348) |
| AJJZ | Document Type | Federal specification |
| AJKA | Document Identification | W-I-00520 |
| AJKB | Component Document Page Number | 4 |
| AKVQ | Station Quantity | 20 |
| AKVR | Transducer Quantity | 4221 |
| AKVS | Transducer Type | Headphone and microphone |
| AKVX | Electrical Transmission Type | WIRE |
| AKWC | Electrical Power Source Relationship | Operating |
| ALBY | Usage Design | Indoor |
| FAAZ | Phase | Single 1ST alternate operating power rqmtsingle |
| FAAZ | Phase | Single 2ND alternate operating power rqmt |
| FEAT | Special Features | 20 audio-active-compare booths |
| ZZZW | Departure from Cited Document | W-I-00520 except that paragraph 3.3.1.1, instructor console, is changed to read B. tape reproducer-one, G. operators chair not required, I. one set of headphones and one microphone, paragraph 3.3.1.2.1, audio-active booth, is changed to read C. operators chair not required |