HP 8360 B Series User Manual page 183

When the swept signal generator is in log AM mode, the input
accepts a wider range of input signal. For every -1 V input, the
RF output level decreases by 10 dB. For every +l V, increases by
10 dB. So the dynamic range of positive to negative power levels is
dependent on the swept signal generator power level setting.
The input impedance for this input connector is factory set at
50 0, but can be switched to 2 kR. Refer to "Adjustments" in
Calibration
the manual. See "Specifications" for the electrical
requirements of the AM input. Damage levels for this input are
AUX OUTPUT provides a reference signal from 2 to 26.5 GHz at a
typical minimum power level of -10 dBm. Nominal input impedance
is 50 0.
EXT ALC allows the swept signal generator to be externally leveled.
This input is used for power meter leveling or negative crystal
detector leveling.
Input impedance in crystal or meter leveling modes is nominally
1 MR. See "Specifications" for the signal requirements. Nominal
input impedance is 100 kR.
FM INPUT accepts a -8 to +8 V signal when on the 1 MHz/V
sensitivity, or a -1 to +l V signal when on the 10 MHz/V
sensitivity. Any signal greater than these limits will cause distortion.
The deviation changes linearly as the FM input changes from 0 to its
upper or lower voltage limit. The input impedance for this input
connector is factory set at 50 s2, but can be switched to 600 R. Refer
to "Adjustments" in the
input is 215 V or 1-15 V.
PULSE INPUT is TTL compatible. A TTL high input (>+2 V)
causes a maximum selected RF power output, while a TTL low input
causes minimum RF output (>80 dB RF on/off ratio). Nominal
input impedance is 50 a. When using internal pulse generator, a
TTL-level pulse sync signal preceding the RF pulse by nominally
70 ns is produced at this connector. The electrical requirements of
the PULSE INPUT are detailed in "Specifications". The damage
levels for this input are >+5.5 V or s-O.5 V.
PULSE SYNC OUT (Option 002 only) Outputs a 50 ns wide TTL
pulse synchronized to the leading edge of the internally-generated
pulse.
PULSE VIDEO OUT (Option 002 only) Outputs the pulse
modulation waveform that is supplied to the modulator. This can be
either the internally- or externally-generated pulse modulation.
SWEEP OUTPUT provides a voltage range of 0 to +lO V. When
the swept signal generator is sweeping, the SWEEP OUTPUT is
0 V at the beginning of the sweep and +lO V at the end of the
sweep regardless of the sweep width. In CW mode, the SWEEP
OUTPUT ranges from 0 V at the swept signal generator minimum
Calibration
manual. Damage level for this
Operating and Programming Reference C-5