Leitch FR-684AV - Configuration; Input Coupling; Clamp Mode

680 Series Video Distribution Amplifiers Installation and Operation Manual 21
Chapter 5: VEA-684 Video Equalizing Distribution Amplifier Modules
Configuration
Figure 5-3. Coupling and Clamp Configuration Options
Input Coupling
If AC coupling is required, J2 and J3 should be in the upper position. If DC
coupling is required, J2 and J3 should be in the lower position. These settings
are shown in Figure 5-3.
Clamp Mode
The clamping mode can be set for No Clamp, Hard Clamp, or Soft Clamp on
Jumper J3. These settings are shown in Figure 5-3.
J3 J3J3
SOFTHARD
DC AC
NO
CLAMP
J3 J3
J2 J2
Clamp Mode
Input Coupling
A
B
C
D
E
F
H
J
K
L
M
N
P
R
S
VEA-684
VPD-683-D
VPD-683-XEQ
VPD-683-CLP
VPD-683-DEQ
-RMV
-
1
2
3
4
P3
R38
1
2
3
4
P4
R36
CLAMP MODE FOR J1
INPUT COUPLING SETTING FOR J 2 AND J3
AC
33
22
J2 J3
11
DC
NO CLAMP
HARD
SOFT
GAIN EQ
VEA-684-RMV
J2
J3
Note
Clamp Mode and Input
Coupling have their shunt
positions illustrated by the
symbols printed on the circuit
board.