TTI TG550 - Display Functions; General Specification

Count In
The AM/COUNT IN socket is set to external frequency measurement when EXT COUNT is
selected.
Input Impedance:
1MΩ//25pF.
Input Sensitivity: 50mVrms (sinewave).
Maximum Allowable Input
Voltage:
50Vdc/50Vrms to 400Hz with respect to ground
, reducing to
1Vrms above 1MHz.
DISPLAY FUNCTIONS
The LCD shows generator frequency simultaneously with output amplitude/offset, together with
various status annunciators. Alternatively, it is the external frequency measurement display.
Internal Measurement Accuracy
Frequency: Auto-ranging reciprocal measurement giving 4-digit resolution down to
10Hz (to 1Hz on the 5Hz range); resolution is fixed at 0·01Hz below
10Hz (0·001Hz below 1Hz on the 5Hz range).
Accuracy is ± 1 digit to 2·1Hz (to 0·21Hz, Symmetry off, or to 0·42Hz,
Symmetry on, on the 5Hz range); below this the accuracy is ± 1% of
range full scale (unspecified with Symmetry on).
Amplitude: Display shows peak-to-peak amplitude or rms value. Display corrected
for attenuator setting. 3-digit resolution, accuracy typically ±5% of
range full scale.
DC Offset: 3-digit resolution; accuracy typically ±2% setting ± 1 digit.
Display corrected for attenuator setting.
External Frequency Measurement
Frequency Range: 5Hz to 20MHz, fully autoranging.
Input Sensitivity: 50mVrms (sinewave).
Measurement Time: Selectable 0·5s or 5s.
Resolution: 6 digits in 0·5s; 7 digits in 5s.
Accuracy: ± 1 digit ± timebase accuracy.
Timebase Accuracy: ± 10ppm initial error; ±5 ppm/year ageing rate; typically less than
0·5 ppm/ºC.
GENERAL
POWER REQUIREMENTS
AC Input Voltage: 230V or 115V nominal, 50/60Hz, by internal adjustment; operating range
± 14% of nominal. Installation Category II.
Power Consumption: 25VA max.
Operating Range: +5°C to +40°C, 20% to 80% RH.
Storage Range: -10°C to +65°C
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 1.
Size: 260 (W) x 88 (H) x 235 (D) mm (10.2 x 3.4 x 9.2") excluding handle and
feet.
Weight: 1.9kg (4.2lb).
Safety: Complies with EN61010-1.
EMC: Complies with EN50081-1 and EN50082-1.
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