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Introduction and Specifications
1–4
760A / 760D / 760N
Specifications
The Performance Requirements listed in Table 13 are warranted over an ambient
temperature range of 0°C to 50°C only when the 760A has been calibrated at
25°C ±5°C, following a warm–up period of 20 minutes.
A Performance Check procedure is provided in SECTION 5, PERFORMANCE
CHECK AND CALIBRATION PROCEDURES, to verify the Performance Require-
ments listed in the following table.
Table 1–3: Electrical Characteristics
Characteristic Performance Requirement Supplemental Information
Perf Check
Step No.
Audio Inputs
Balanced Bridging >10 kΩ/side.
Termination Selectable from >20 kΩ, 600Ω, or
150Ω
(internal jumper) 2
Protection Will withstand 50 V peak common–
mode input, dc to 20kHz, without
damage.
Sensitivity
760A Gain selectable for 0 dB bar indication
for sine waves of 0, +4, +8, +12, and
+16 dBu.
(internal jumper)
One user–definable position available, on
standard only.
3
760D 1.55 V rms for +0 dB indication.
760N 1.55 V rms for +6 dB indication.
CRT Display
Automatic Gain Control
Control Range
760A
760D
760N
+8 dB to –20 dB (0 dB bar reference).
+5 to –25 dB.
+15 to –15 dB.
4
Gain Match and Track-
ing (over AGC range).
"0.3 dB. 5, 6
Phase Match "1° @ 0 dB. 7
Frequency Response "0.5 dB, 20 Hz to 20 kHz throughout
AGC Control Range.
8
Z– Axis Dimming With absence of signal. 10
Bar Graph
100 Segment LED
760A
760D
760N
Green to 0 dB, red above.
Green to 0 dB, red above.
Green to +6 dB, red above.