Indication 7
digits with annunciators.
Resolution
0.1
Hz.
Frequency accuracy As frequency
standard.
Distortion
Less than 0.1% THD in sine wave mode at frequencies up
to
20 kHz.
Alternative
waveforms
A triangular wave is available
for
frequencies up
to 100 kHz.
A square wave is available for frequencies up to 2 kHz (requires
Option 006
-
Avionics or Option 008
-
RF Profiles
and Complex
Sweep
to be
fitted).
Signalling tones The modulation oscillator
can be used to generate sequential (up
to 16 tones) or sub-audible tones in accordance with ElA, ZVEI1,
ZVEI2,
DZVEI, CCIR, EURO
1,
EEA, NATEL
and
DTMF*
standards. Facilities
are also
available
for creating and storing
user defined tone systems.
^Requires second modulation
oscillator (Option
001)
to be fitted.
EXTERNAL Two independent inputs on the front panel with BNC
connectors,
MODULATION
EXT MOD 1 and EXT MOD 2. The modulation is calibrated
with
1
V
RMS
sine wave applied. Input impedance 100 kQ
nominal.
MODULATION ALC The
EXT MOD 1
and
EXT MOD 2 INPUTS can each be
levelled
by an ALC
system.
Level
range
0.7 V
RMS to 1 .4
V
RMS sine wave.
Distortion
Less than 0.1% additional distortion for frequencies up to 20 kHz
at 1 V RMS
sine
wave (typically
less than 0.1% up to 50 kHz).
1 dB bandwidth Typically 10 Hz to 500 kHz.
LF
OUTPUT Front panel BNC connector.
The
output may be
configured in
either LF Generator Mode to
give
an output from the internal
modulation oscillator or in LF Monitor Mode to give
an output
from the internal modulation signal paths.
Selection By keyboard
entry of data. Variation by 1M keys and by rotary
control.
Indication
7 digits with unit annunciators for frequency and 4 digits with
unit annunciators for level.
Level
100
LtV to 5 V RMS with a load impedance of greater than
600 a
1
00
p
V to 1 .4 V RMS with a load impedance of greater than
50 Q.
Common mode voltage ±0.5 V maximum.
Source impedance 5.6 0 nominal.
46882-074C
1-11
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