Comtech EF Data EQ90 Series - Manual (Page 30)

Operation EQ90 Amplitude Equalizer
3-6 Rev. 2
R
R EQ6
C IN
OUT
DELAY
L
R
R
EQ7
C IN
OUT
DELAY
L
R
R
SLP
ADJ
BYPASS
LVL MON
GAIN
ADJ
EQ10
C IN
OUT
DELAY
L
R
R
EQ9
C IN
OUT
DELAY
L
R
R
EQ8
C IN
OUT
DELAY
L
R
R EQ5
C IN
OUT
DELAY
L
R
R EQ4
C IN
OUT
DELAY
L
R
R EQ2
C IN
OUT
DELAY
L
R
R EQ1
C
2 3 4
5
6
8
7
1
IN
OUT
DELAY
L
R
R EQ3
C IN
OUT
DELAY
L
Figure Chapter 3-3. Equalizer Module
Table Chapter 3-3. Equalizer Module Control Functions
Item Nomenclature Function
1 R Switch Used to adjust the amplitude response.
(Refer to Figure Chapter 3-7 for the signal pattern.)
2 L Switch Used to adjust the delay peak magnitude.
(Refer to Figure Chapter 3-6 f or the signal pattern.)
3 C Switch Used to adjust the delay peak center frequency. (Refer to Figure Chapter 3-5
for the signal pattern.)
4 IN/OUT Switch Used to insert an equalizer delay section to, or remove from, the signal path.
5 R Switch Used to adjust the amplitude response. (Refer to Figure Chapter 3-8 for the
signal pattern.)
6 GAIN ADJ Potentiometer Used to set the IF output signal gain level (nominally 15 dB).
7 SLP ADJ Potentiometer Used to provide
±
3 dB amplitude slope equalization.
8 BYPASS/LVL MON Switch Used to activate the IF output signal level monitoring function. The minimum
signal level required to avoid an alarm condition is -20 dB. In the BYPASS
position, the signal level is not monitored. However, a power supply failure
will result in an alarm condition.