A simplified block diagram of the Model 48 is shown in figure 4- 1 . a. Input. The balanced or unbalanced input signal is terminated by the input switch in 135 ohm , 600 ohm, 900 ohm, or bridging ... Dual isolating capacitors precede the input transformer, and reject the D.C. voltages which appear at the input. ... (2) The signal limiter also supplies an input to the out of lock detector, which is combined with the output of the dropout detector to generate the CAUTION light indication.
|Title||:||Operator's, Organizational, Direct Support and General Support Maintenance Manual for Phase Jitter Meter ME-490/U (Hekimian Model 48) (NSN 6625-01-005-7226).|