BIRD AT-400 Antenna Tester AT-400 Operator's Manual

47, Maintenance 35 Battery Test The battery test checks the output voltage of the batteries. The result is displayed in a simulated analog meter type graphic with the value shown at the top of the display. The scale is set from 6-8V. If the voltage measured is less than 7V you should charge the…

52, Bird AT-400 Antenna Tester 40 ROM, EEPROM, RAM, A/D, TEMPR, PLL Test Fails Ensure the results are valid by repeating the self test or turning the unit off then back on. If the problem persists return the unit for service. Stuck Keys Test Fails If any characters other than 0 are …

53, Maintenance 41 to a perfect match. Measurement results are not accurate under these circumstances. The remedy is to disable the interfering source, if possible, or postpone the measurement to a time when the interfering source is not operating. Customer Service Any maintenance…

42, Bird AT-400 Antenna Tester 30  NOTE: If an out of range value is entered, the minimum (if under-range) or maximum (if over-range) value will be substituted. If a maximum value that is lower than the minimum value is entered the cursor will blink again on the minimum value, waiting for …

18, Bird AT-400 Antenna Tester 6 Features Swept Frequency Mode — Fast scan shows VSWR, ρ, match efficiency or return loss across an entire band. A movable cursor can be used to pinpoint a scan frequency and the corresponding measurement value is displayed. Single Frequency Mode — Provid…