CHAPTER ONE
Table 1-10
IRIG B (B000): BCD Time-of-Year (J11)
Format Pulse Width Modulated B000.
Level TTL/CMOS compatible.
Load 4mA sink
H. MULTICODE AC CODE OUTPUT (BNC J12)
This output produces an AC serial code that contains the time value within the
TCG/T. It is generated by the Multi-Encoder section. The time code format is
determined by front panel menu selection.
The AC code generated can be IRIG A, IRIG B, IRIG G, NASA 36, XR3, 2137
or AN/GSQ-53 (250 Hz) as selected by the Output Code Menu. The time
encoded may come from either the generator or the translator. Codes may be
“re/generated” from the translator at multiple speeds.
Table 1-11 shows the specifications of the Multicode AC Serial Time Code
output.
Table 1-11
Multicode AC Code Output (J12)
Carrier Frequency Dependant on code selected.
Amplitude Adjustable from 0 to 5V Peak to
Peak on the Mark Pulse.
Modulation Ratio Adjustable, 3:1 nominal.
External Load
50Ω minimum.
1.4.3 INTERNAL TIME BASE
This unit can have one of two internal time bases depending on customer requirements. Unless
otherwise specified, the following are the specifications for the oscillators used as the internal
time base -
not the specifications of the unit’s 10MHz sine wave output.
A. VCXO (VOLTAGE CONTROLLED TEMPERATURE COMPENSATED
CRYSTAL OSCILLATOR) with the following specifications:
Output Frequency/Waveform
10MHz Sine Wave.
1-10 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
To Next Page
Loading...
Need help?
General