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Datachron 3170 iriq time code generator
Datachron 3170 IRIQ Time Code Generator
The Model 3170 Time Code Generator accumulates time from either an internal oscillator or an external frequency standard. When equipped with its synchronized generator option, the unit has two modes of operation; Generator and Synchronized Generator. In the Generator mode, time is presettable from the front panel and controls are provided to synchronize the unit to an external time standard such as WWV. Internal batteries maintain time accumulation for in excess of eight hours in the event of primary power failure. In the Synchronized Generator mode, the unit automatically synchronizes to a serial time code input such as IRIG B. The standard output of the unit is the IRIG B serial time code.
Parallel BCD outputs (tenths of milliseconds through days)
Parallel Binary Outputs (several ranges and resolutions available)
Other Time Code Outputs: IRIG A, E, G, H
Multiple Rate Slow Code Output for strip chart recording.
The unit accumulates time from an internal temperature compensated crystal oscillator (TCXO) or external 1MHz frequency standard as selected by internal jumpering.
Specifications for the TCXO are
Stability: 1 x 10-6 from 0 to +50 C
Aging Rate: 3 x 10-9 per day (5 X 10-7 per year)
Specifications for the 1MHz input are:
Waveform: Sine or square wave
Amplitude: 0.5 to 9 volts, peak to peak
Input Impedance: 10K ohms
The Model 3170 operates from a primary power source of 115 volts AC 10%, 50-70 Hz and consumes less than 20 watts of power. In the event of primary power failure, internal Nickel Cadmium batteries maintain time accumulation for in excess of eight hours. No display or outputs are provided during power failure. The batteries are continuously trickle charged when AC power is present.
