4
Amplitude Modulation (TG330 only)
Modulation Depth:
Variable 0 to 100% typical.
Modulation Frequency:
400Hz internal. DC to 20kHz external.
External Modulation:
By signal applied to COUNT/AM IN socket.
OUTPUTS
50
Ω
Main Out
Output Impedance:
50
Ω
Amplitude:
2mV to 20V peak-peak open circuit (1mV to 10V peak-peak into 50
Ω
)
in four switch-selectable ranges with 20dB vernier control within each
range.
Attenuator:
0, –20, –40 or –60dB.
DC Offset Range:
±10V. DC offset plus signal peak limited to ±10V (± 5V into 50
Ω
);
CLIP shows in display when signal peak exceeds ±10V.
DC offset plus waveform attenuated proportionally by the attenuator.
600
Ω
Main Out
Alternative output socket providing the same signal as the 50
Ω
Main Out but from 600
Ω
. The
50
Ω
and 600
Ω
sockets are not independent.
Aux Out
Output Characteristics:
Frequency, symmetry and phase the same as main outputs.
Output Level:
0 to 5V TTL/CMOS logic levels capable of driving 2 standard TTL loads.
Sweep Out (TG330 only)
When internal sweep is selected the sweep signal is available as a 0 to 3V ramp from 600
Ω
.
INPUTS
Sweep In
The SWEEP IN/OUT socket is set to Sweep In when EXT SWEEP is selected.
Input Impedance:
10k
Ω
Input Sensitivity:
0 to 3V for 1000:1 sweep.
Maximum Allowable
Input Voltage:
±10V
Sweep Linearity:
Better than 1%
Maximum Slew Rate of
Sweep Voltage:
0·1V/µs
AM In (TG330 only)
The AM/COUNT IN socket is set to AM input when EXT AM is selected.
Input Impedance:
40k
Ω
Input Sensitivity:
Approximately 2V peak-peak for 100% modulation.
Maximum Allowable
Input Voltage:
±10V
