CHAPTER ONE
Table 1-6 shows the specifications of the Multicode DC Serial Time Code output.
Table 1-6
Multicode DC Code Output (J4)
Format Pulse Width Modulated.
Level TTL/CMOS compatible.
Load 4mA sink
C. 10MHZ SINE WAVE OUTPUT (BNC J5)
A buffered output of the internal 10MHz oscillator is available on BNC J5. Table
1-7 shows the specifications of this 10MHz output.
Table 1-7
10MHz Sine Wave Output (J5)
Frequency 10MHz.
Amplitude 1 volt RMS (2.8 volts peak-to peak)
when terminated into 50Ω.
Output Impedance
50Ω, nominal.
Note: In order for this feature to operate, an internal jumper (J22) must be
properly selected as shown below:
J22
123
10MHz
OUTPUT ENABLED
D. AGC (AUTOMATIC GAIN CONTROL) OUTPUT (BNC J7)
This code output is identical to the code input (J8) except that the amplitude is
normalized at 2 volts peak to peak (no load) and 1 volt peak to peak into 50 ohms.
E. RS-232 TIME WORD OUTPUT – TALKER (9 PIN D CONNECTOR J9)
This printer output port can output data to an RS-232 compatible serial printer or
terminal. The data (time and status) can be output in an ASCII or BCD format,
selectable by DIP switches. Refer to Chapter Three for operation.
Table 1-8 lists the connector pin assignments.
1-8 TM7000 TymMachine TCG/T (Rev D) Symmetricom, Inc.
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