FRONT PANEL CONTROLS
1. POWER Switch
. This is the main power switch. When turning the instrument on,
there may be a delay of several seconds before the instrument appears to respond.
2. OVERLOAD Indicator
. When the instrument is powered, this indicator is normally
green, indicating normal operation. If this indicator is yellow, an internal automatic
overload protection circuit has been tripped. If the unit is overloaded (by operating
at an exceedingly high duty cycle or by operating into a very low impedance), the
protective circuit will disable the output of the instrument and turn the indicator light
yellow. The light will stay yellow (i.e. output disabled) for about 5 seconds after
which the instrument will attempt to re-enable the output (i.e. light green) for about 1
second. If the overload condition persists, the output will be disabled again (i.e. light
yellow) for another 5 seconds. If the overload condition has been removed, the
instrument will resume normal operation.
This overload indicator may flash yellow briefly at start-up. This is not a cause for
concern.
3. OUT CONNECTOR
. This SMA connector provides the main output signal, into load
impedances of 50Ω. (A 50Ω load is
required
.) It can generate voltages of up to ±5V.
4. SYNC OUT
. This connector supplies a SYNC output that can be used to trigger
other equipment, particularly oscilloscopes. This signal leads (or lags) the main
output by a duration set by the "DELAY" controls and has an approximate amplitude
of +3 Volts to R
L
> 1kΩ with a pulse width of approximately 50 ns.
5. LOGIC Output
. The signal on this output has approximately the timing parameters
as the main output (i.e. frequency, pulse width, and delay) but the amplitude is fixed
at either TTL logic levels (0 and +5V, approximately) or ECL logic levels
(-1.6V and -0.8V, approximately), depending on the settings. When using this
output, it is recommended that it be terminated with a 50Ω load.
6. LOGIC-Complement Output
. The signal on this output is the logical complement of
the signal on the LOGIC output (item 4). That is, the high and low logic levels are
15
2
3
4
7
8
1
5
6
Summary of Contents for AV-1030-B
Page 42: ...PERFORMANCE CHECK SHEET 42...
