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TM 11-6625-2872-14&P
Table 1-1. Specifications
ELECTRICAL SPECIFICATIONS
INPUT RESISTANCE: Single-ended to ground 1 megohm minimum.
SIGNAL DETECTION: Full-wave average. 50 dB or 100 dB span, switch selected from front panel.
DETECTION ACCURACY: ± 1 dB maximum error, sine wave input.
MAXIMUM SENSITIVITY: 100 µV rms of sine wave corresponds to bottom scale on most sensitive range.
GAIN STABILITY: Temperature: Less than 2 dB/10°C, 0° to 40°C. Line Voltage: Less than 0.5 dB, 103 to 127 volts.
ATTENUATION: 50 dB span ranges: 9 bottom scale ranges at -80 dBV to 0 dBV in 10 dB steps corresponding to
100 µV, 320 µV, 1 mV, 3.2 mV, 10 mV, 32 mV, 100 mV, 320 mV and 1 volt. Top scale is nominally 50 dB (320X) above
bottom scale.
100 dB span ranges: 4 bottom scale ranges at -80 dBV to -50 dBV in 10 dB steps corresponding to 100 µV, 320 µV, 1 mV
and 3.2 mV. Top scale is normally 100 dB (100,000X) above bottom scale.
ATTENUATION ACCURACY: ± 3% maximum error (0.25 dB) for -80 to -50 dBV attenuation ranges. For other ranges,
detection error (± 1 dB) may add to attenuation error.
OUTPUT: Single-ended to ground, ± 2..5 V maximum or 0 to +5 volts across 1000 ohms minimum.
OUTPUT RESISTANCE: Approximately 10 ohms.
SIGNAL BANDWIDTH: 5 Hz to 100 kHz, less than 3 dB down from mid-band level on SLOW response range. 500 Hz to
100 kHz on FAST response range.
SIGNAL CREST FACTOR: 3 to 1 at full scale on 100 dB span, ±500
volts peak maximum allowed.
DETECTION RESPONSE TIME: For a step change in input amplitude with ratio of 40 dB (100:1) or greater, the time
required for the output to increase or decrease between values corresponding to 105 and 90% of the maximum applied
signal (i.e. , 20 dB below max. applied signal and 1 dB below max applied signal) is approximately 20 msec in FAST
position and 2 sec in SLOW position. i. e. , average rate of change of output under these conditions corresponds to
approximately 900 dB/ sec in FAST: 9 dB/sec in SLOW.
OUTPUT NOISE: Maximum noise appears at bottom scale. 50 dB span: 80 mV pp: 100 dB span: 40 mV pp.
INTERNAL CALIBRATION: -80 and +20 dBV, internally adjustable; -30 dBV accurate to + 0.5 dB. Stability: less than
0.25 dB, 10° to 40°C or 103 to 127 volts; approximately 500 Hz.
GENERAL SPECIFICATIONS
Terminals: DC output on front panel. Input and auxiliary DC output on rear of mating power supply.
Front Panel Controls: RANGE switch; GAIN potentiometer locking; LOG ZERO, 10-turn potentiometer, locking; 50/100
dB SPAN switch; SPAN BALANCE, screwdriver adjust; RESPONSE TIME/CAL switch.
Internal Controls: Signal Board: Balance adjust; CAL adjust (2); Zero Suppression adjust; Attenuator compensation
trimmers (4). Detector Board: 100 dB span mid-scale adjust.
Weight: Approximately 5 lb. (2, 3 kg).
Front Panel Dimensions: 7" high, 2-1/16" wide (178 x 52 mm).
Note: When Preamplifier is used in a recording system, these specifications are affected by performance of the recorder
and driver amplifiers. (Consult data sheet of appropriate system for details.)
All Sanborn 8800 Series Amplifiers are tested for performance under normal production environmental conditions:
ambient temperature 20° to 30° C and relative humidity less than 80% unless otherwise noted.
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