20
Input/Output Descriptions
Front panel connectors (all connectors are SMB male unless otherwise noted)
RF output RF/microwave output signal from the N8211A; nominal output impedance 50 Ω
Option 520 Precision APC-3.5 male connector
Options 540 Precision APC-2.4 male connector
References
10 MHz Out Outputs internal or external reference signal. Nominal output impedance 50 Ω. Nominal output
power +8 dBm.
10 MHz In Accepts an external reference (timebase) input (at 1, 2, 2.5, 5, 10 MHz for standard and 10 MHz
only for Option UNX). Nominal input impedance 50 Ω.
10 MHz EFC (Option UNX 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 MΩ. Note: A short or 50 Ω termination should be attached to this input connector
whenever the EFC port is not used.
Step Sweep
Settled Provides an output trigger that indicates when the upconverter has settled to a new frequency
or power level. High indicates source not settled; low indicates source settled.
Trig out 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 1 µs pulses
(nom) across a ramp sweep. When using LF Out, provides 2 µs pulse at start of LF sweep.
Trig in 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.
Analog Sweep
Z/Mkrs During ramp sweep, supplies +5 V (nom) level during retrace and band-switch intervals. Supplies
–5 V (nom) level when the RF frequency is at a marker frequency.
Stop Swp 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.
Sweep Out Supplies a voltage proportional to the RF power or frequency sweep ranging from 0 V at the
start of sweep to +10 V (nominal) at the end of sweep, regardless of sweep width. During CW
operation, supplies a voltage proportional to the output frequency, +10 V (nom) corresponding
to the maximum specified frequency. Output impedance: < 1 Ω (nominal), can drive 2000 Ω.
LF Output LF output (Option UNT) is an internal modulation drive and function generator for AM, FM, PM and
pulse modulation. Nominal output impedance 50 Ω.
Pulse Modulation
Pulse In Accepts input signal for external fast pulse modulation. Also accepts external trigger pulse input
for internal pulse modulation. Nominal impedance 50 Ω. Damage levels are 5 V
rms
and 10 V
peak
.
Sync Out Outputs a synchronizing pulse, nominally 50 ns width, during internal and triggered pulse
modulation. TTL-level compatible, nominal source impedance 50 Ω.
Video Out Outputs a signal that follows the RF output in all pulse modes. TTL-level compatible, nominal
source impedance 50 Ω.
(11 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals