Altec 8553b manual

Page 2

SPEClFICATIONS FOR THE 8553B DUAL CHANNEL PROGRAMMABLE MICROAUDIO EQUALIZER

Channels:

Filter Type:

Number of Bands:

Two, completely inde-
pendent

Active analog 2nd-order
bandpass filter set

28 one-third octave
bandpass filters on ISO
center frequencies from
31.5 Hz to 16kHz.

[LA-bus Programmability:
(using 8061A, 8051A, or 80558 programmers)
B/C of each frequency

band:

Master gain:

Channel selection:

uA-bus Interface Port:

Type:
Max. Cable Length:

:12 dB in 1 dB steps
(standard configuration)

: 6 dB in 1/2 dB steps
(with user hardware modi-
fication)

:12 dB in 1 dB steps
(standard configuration)

5 6 dB in /2 dB steps
(with user hardware mod-
ification)

rear panel toggle switch

Non-standard TH
15 m (50 ft.)

System422m Programmability:
(using 8060A or 8062A PA-422 drivers and
Acousta~Graphics Release 2.0 System Management

Software)

B/C of each frequency

band:

Master gain:

Low pass filter

corner frequency:

High pass filter
corner frequency:

Memories:

:12 dB in 1 dB steps
(standard configuration)

1 6 dB in 1/2 dB steps
(with user hardware mod-
ification)

:12 dB in 1 dB steps
(standard configuration)

: 6 dB in 1/2 dB steps
(with user hardware mod-
ification)

5 kHz, 6.3 kHz, 8 kHz,
10 kHz, 12.5 kHz, 16
kHz, & OFF (>50 kHz)

OFF (<10 Hz), 40 Hz, 50
Hz, 63 Hz, 80 Hz, 100
Hz, 125 Hz, 8: 160 Hz
Default (DEF), 1, 2, 3, 4,
5, 6, 7, & a

Memory pointer:

Channel selection:
Device Address:

PA-422 Interface Port:
Type:
Baud rate:
Max. cable length:
Linking:
Character frame
bits:

Handshaking:

Input Circuitry:
Type:

impedance:

Nominal Level:
Maximum Level:

Output Circuitry:
Type:

Source impedance:

Load Impedance:
Nomimal Level:
Maximum Level:

High Pass Filter:

Low Pass Filter:

Frequency Response:

Total Harmonic
Distortion:

IMD (SMPTE 4:1):

Noise Floor:

OFF, 1, 2, 3, 4, 5, 6, 7,
& 8
1, 2
via 8-position DIP switch

Electronically»balanced,
meets EIA-422~A

19.2 kilobaud

1.2 kilometers (4,000 ft.)
Serial

1 - start bit

8 - data bits

1 - even parity bit
2 ~ stop bits
DSR/DTR

Electronically-balanced,
transformer option

20 kn balanced

15 kn unbalanced

0 dBu (0.775 V rms)
+18 dBu

Electronically-balanced,
transformer option

20 n balanced

10 fl unbalanced

600 0's minimum

0 dBu (0.775 V rms)

18 dBm

+24 dBu into 2 K0 mini-
mum load impedance

3-pole (18 dB/octave),
programmable frequency

3pole (18 dB/octave),
programmable frequency

20 HZ - 20 kHz, 11/2 dB
(with high and low pass
filters OFF)

<0.015% (at unity gain
from 20 Hz - 20 kHz)
<0.015% (at unity gain)
<-85 dBm (A-weighted,

at unity gain, high and
low pass filters OFF)