E2v N6081 series Operation Manual - page 11
7 Amplifier
Interface
7.1 Introduction
Connection to the Stellar Amplifier is made via a 15-
way D-type socket for the N6081X series or a 26-way
D-type plug for the N6081X-01 series.
The control unit obtains its power supply (15 V,
100 mA) from the Stellar amplifier via this D-type
connection. The D-type back shell and control con-
nector back shell must have a 3608 electrical connec-
tion to the cable screen to prevent Radio Frequency
Interference (RFI) from adversely affecting the opera-
tion of the product.
A screened multicore cable must be used for the
interconnection.
To avoid the risk of crosstalk on the "data commu-
nications" lines, they must be twisted pairs.
The N6081X-01 series also has a 9-way D-type socket
to enable connection to the RF INHIBIT and INV RF
INHIBIT lines.
7.2 Interconnections (see also Appendix A)
41-way amplifier
15-way D-type
connector
connector
A
. . . . . . . .
2
B
. . . . . . . .
4
C
. . . . . . . .
3
D
. . . . . . . .
5
E
. . . . . . . .
6
H, P, R, p . . . . . . . 14
J
. . . . . . . .
7
K
. . . . . . . .
8
L
. . . . . . . .
9
U
. . . . . . . .
1
b
. . . . . . . . 10
c
. . . . . . . . 11
d
. . . . . . . . 13
e
. . . . . . . . 12
Notes: Cable for b and c must be a twisted pair.
Cable for d and e must also be a twisted
pair.
7.3 Interconnections for -01 variant (see also
Appendix B)
41-way amplifier
26-way high density
connector
D-type socket
A
. . . . . . . .
8
B
. . . . . . . .
6
C
. . . . . . . .
7
D
. . . . . . . .
5
E
. . . . . . . .
4
G
. . . . . . . . 10
H
. . . . . . . .
1
J
. . . . . . . . 19
K
. . . . . . . .
2
L
. . . . . . . . 25
P, R, p
. . . . . . . 20
U
. . . . . . . .
9
b
. . . . . . . . 24
c
. . . . . . . . 23
d
. . . . . . . . 21
e
. . . . . . . . 22
Notes: Cable for b and c must be a twisted pair.
Cable for d and e must also be a twisted
pair.
9-way connector
function
1
. . . . .
INV RF INHIBIT
2
. . . . . . . not used
3
. . . . . . . not used
4
. . . . . . . not used
5
. . . . . . . .
0 V
6
. . . . . .
RF INHIBIT
7
. . . . . . . not used
8
. . . . . . . not used
9
. . . . . . . not used
Note:
To enable RF, link pins 1 and 5.
7.4 Termination Resistors
A 120 O
1
/
4
W resistor is to be fitted in the D-type
back shell between pins 12 and 13 (pins 21 and 22 for
the -01 variant).
A 120 O
1
/
4
W resistor is to be fitted in the 41-way
connector back shell between pins b and c and
another 120 O
1
/
4
W resistor between d and e.
HBN6081-1
page 9