Products

Engineering Parameters Test devices - ZZG5

The Time Signal Generator ZZG5 simulates different time code transmitters. The generated time signal can be broadcasted via a connected antenna or it can be connected directly to the “unit under test”.

APPLICATION

Simulation of time signals DCF77, HBG, MSF, WWVB and JJY (40kHz and 60kHz)
Creation of exact defined time signals for measuring purposes and quality inspection
Support of software development for RC watches, clocks and any other time piece applicationCreation of highly exact frequencies

FEATURES

Mains operated equipment with 50 Ohm output for time signal
Back-up function with continuous clock in switched OFF condition, settings remain unchanged
Operation + Display with 5 buttons and a two-lined, illuminated display (24 characters each)
Simple adjustment of time, date, time signal transmitter and output voltage; main menu
Once the value of an antenna factor is put in, the adjustment/indication of output signal level can
bedone as output-voltage (V; dBV or dBµV) or field strength (V/m; dBV/m or dBµV/m); main menu
Fine tuning of time in 100ms, 10ms and 1ms steps
Automatic calculation of the “day-of-the-week”
Automatic switch to DST and back from DST for DCF, HBG, MSF and WWVB in switched ON condition
Separate menu for each time signal for adjustment/input of special protocol bits
All bits (including 2nd bit level for MSF, marker bits for WWVB and JJY) are changeable
Possibility of flexible change of carrier frequency, modulation and pulse length
noise generator included; Creation of narrow-band-noise with and without heterodyning
possibility to switch OFF the modulation and/or the carrier frequency, independent to each other
Fine tuning of time pulse and frequency between –99.9ppm and +99.9ppm
additional output for modulation signal (second pulse)
possibility to connect a GPS receiver for time- and/or seconds synchronisation
Automatic adjustment is executed when a GPS receiver is connected

Technical data(values refered to ambient temperature: 23°C ± 1°C)

Parameter	value	condition
Operating temperature	10°-35°C
Humidity	0%-90%	not condensing
Output voltage	1.00µV - 9.99V eff.	at an output impedance = 50 Ohm; adjustable in 7 decades, 3 digits resolution each
Deviation of output voltage incomparison with the displayed value	±2.5 % ±5 %	for ranges 10µV - 9.99 V for ranges1µV - 9.99µV
Adjustment (level reduction) of output voltage via time signal	0% - 99%of carrier amplitude	adjustable in 1% steps
Adjustment of narrow band noise (band width = 25Hz)	0% - 99%of carrier amplitude	adjustable in 1% steps
Frequency	10 kHz - 99.99999 kHz	adjustable in steps of 0.01Hz, with guarantied accuracy of output voltage
Frequency	0 Hz-999.99999 kHz	adjustable in steps of 0.01Hz, without guarantied accuracy of output voltage, frequency limits (-3dB) at 10Hz and 900kHz
Time pulse and frequency deviations	± 0.5 ppm equals ± 43 ms/day
Time pulse and frequency deviations	short term operation:± 0.1ppm over 1 day and > 1day:0 ppm	with connected and receiving GPS receiver; measured after a GPS operation of at least 30 minutes
Accuracy of the length of modulation pulses	±75 µs
Accuracy of the leading edge of SECOND-pulses	±75 µs	GPS operation; refered to the leading edge of seconds of UTC-time
Time pulse and frequency change	-99.9ppm-99.9ppm	adjustable in 0.1ppm steps
Data memory time of backup battery	5 years	OFF time durations >2days considered only
Field strength	lower limit: 1µV/m(or another field strength, created at an output voltage of 1µV, if the resulting value is higher) upper limit: 9.99V/m(or another field strength, created at an output voltage of 9.99V, if the resulting value is lower)	from 1 abbreviating antenna factor