Atec Agilent-8591C - Manual (Page 5)

5
FM deviation
(characteristic)
Peak reading of FM deviation
Range ±100 kHz
Resolution 100 Hz
Accuracy ±1.5 kHz
Hum/low frequency
disturbance
Power-line frequency and low frequency
disturbance is measured on modulated
and/or unmodulated carriers. May not be
valid for scrambled channels.
AM range 0.5 to 10%
Resolution 0.1%
Accuracy ±0.4% for hum ≤3%
±0.7% for hum ≤5%
±1.3% for hum ≤10%
Visual carrier-to-noise ratio
(C/N)
7 The C/N is calculated from the visual carrier
peak level and the minimum noise level, nor-
malized to 4 MHz noise bandwidth.
Optimum input range See graphs
Maximum C/N range Input level dependent; see graphs 59 to 71 dB
over optimum input range
C/N resolution 0.1 dB
C/N accuracy Input level and measured C/N dependent;
see graphs
±1.0 to ±3.5 dB over optimum input range
CSO and CTB distortion 8 Channel mode composite second order (CSO)
and composite triple beat (CTB) distortions
are measured relative to the visual carrier
peak and require momentary disabling of the
carrier. System mode measurements are
made in the channel above the channel
selected and assume that it is unused. If the
analyzer has Option 107, a non-interfering
CSO measurement can be made.
Optimum input range See graphs
Maximum CSO/CTB range Input level dependent; see graphs
66 to 73 dB over optimum input range
CSO/CTB resolution 0.1 dB
CSO/CTB accuracy Input level and measured CSO/CTB depend-
ent; see graphs
+1.5 dB to +4.0 dB over optimum input range
Cross modulation Horizontal line (15.7 kHz) related AM is meas-
ured on the unmodulated visual carrier.
Range 60 dB, useable to 65 dB
Resolution 0.1 dB
Accuracy ±2.0 dB for xmod. <40 dB, C/N >40 dB
±2.6 dB for xmod. <50 dB, C/N >40 dB
±4.6 dB for xmod. <60 dB, C/N >40 dB
System frequency
response (flatness)
System amplitude variations are measured
relative to a reference trace stored during the
setup.
Frequency response setup
Fast sweep time
2 s (default) for no scrambling
Slow sweep time 8 s (default) for fixed-amplitude scrambling
Reference trace storage 50 traces that include analyzer states
Frequency response test
Range
1.0 dB/div to 20 dB/div (2 dB default)
Resolution 0.05 dB
Trace flatness accuracy ±0.1 dB per dB deviation from a flat line and
±0.75 dB maximum cumulative error
Trace position accuracy 0.0 dB for equal temperature at test locations
and ±0.4 dB maximum for different ambient
temperatures
Non-interfering
Video measurements
Option 107 required. Appropriate TV line must
be selected. Requires FCC or NTC-composite
signal.
Differential gain accuracy ±4% for room temp. and ≥20 dBmV level
Differential phase accuracy ±3° for room temp. and ≥20 dBmV level
Chrominance-luminance
delay inequality accuracy
±45 ns, 32 ns typical
Non-interfering tests with gate on
C/N and CSO
8 (quiet line must be selected) See graphs
In-channel frequency
response accuracy
(requires sin x/x, Philips ghost canceling
reference, FCC multiburst, or NTC-7
combination signal) ±0.5 dB within channel
7. For TV display, video tests (DG, DP, CLDI), and these non-interfering mode RF tests:
C/N, CSO, in-channel flatness
8. A preamplifier and preselector filter may be required to achieve specifications.