Agilent Technologies E8267D PSG Bedienungsanleitung PDF herunterladen (Seite 22)

Stop sweep In/Out Open-collector, TTL-compatible input/output. In ramp

sweep operation, provides low level (nominally 0 V) during

sweep retrace and bandcross intervals, and high level

during the forward portion of the sweep. Sweep will stop

when grounded externally, sweep will resume when

allowed to go high.

Trigger output (Dual mode) Outputs a TTL signal. High at start of dwell, or when waiting

for point trigger; low when dwell is over or point trigger is

received, In ramp sweep mode, provides 1601 equally-spaced

1us pulses (nominal) across a ramp sweep. When using

LF out, provides 2 us pulse at start of LF sweep.

Trigger input Accepts TTL signal for triggering point-to-point in manual

sweep mode, or to trigger start of LF sweep. Damage levels

≥ +10 V or ≤ –4 V.

Source module interface Provides bias, flatness correction, and leveling

connections to the Agilent model 83550 Series mm-wave

source modules.

Source settled Provides an output trigger that indicates when the signal

generator has settled to a new frequency or power level.

High indicates source not settled, Low indicates source

settled.

Z-axis Blank/Markers During ramp sweep, supplies +5 V (nominal) level during

retrace and bandswitch intervals. Supplies –5 V (nominal)

level when the RF frequency is at a marker frequency.

10 MHz EFC (Option UNR only) Accepts an external DC voltage, ranging

from –5 V to +5 V, for electronic frequency control (EFC)

of the internal 10 MHz reference oscillator. This voltage

inversely tunes the oscillator about its center frequency

approximately –0.07 ppm/V. The nominal input impedance

is greater than 1 M.

.25 – 3.2 GHz coherent carrier output Outputs RF signal modulated with FM or ΦM but not I/Q,

AM or pulse. Nominal power 0 dBm. Frequency range

from 250 MHz to 3.2 GHz. Not useful for output frequency

> 3.2 GHz. Damage levels 20 Vdc and 13 dBm reverse

RF power. (SMA female)

Baseband generator reference input Accepts 0 to + 20 dBm sinewave, or TTL squarewave,

reference input to use as reference clock for the baseband

generator (Option 602). Phase locks the internal data

generator to the external reference: the RF frequency is

still locked to the 10 MHz reference. Rate is 250 kHz to

100 MHz 50 Ω (nominal), AC coupled.

Burst gate input Accepts signal for gating burst power for use with internal

baseband generator (Option 602). The burst gating is

used when you are externally supplying data and clock

information. The input signal must be synchronized with

the external data input that will be output during the

burst. The burst power envelope and modulated data are

internally delayed and re-synchronized. The input signal

must be CMOS high for normal burst RF power or CW RF

output power and CMOS low for RF off. Damage levels

are > +5.5 and < –0.5 V.

Event 1 output In real-time mode, outputs a pattern or frame synchronization

pulse for triggering or gating external equipment, for use

with internal baseband generator (Option 602). May be

set to start at the beginning of a pattern, frame, or timeslot

and is adjustable to within ± one timeslot with one bit

resolution. In arbitrary waveform mode, outputs a timing

signal generated by marker 1.

Event 2 output In real-time mode, outputs a data enable signal for gating

external equipment, for use with internal baseband

generator (Option 602). Applicable when external data

is clocked into internally generated timeslots. Data is

enabled when signal is low. In arbitrary waveform mode,

outputs a timing signal generated by marker 2.

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