96-8005353_02-17-2022
Information subject to change
13
8504 OPERATOR’S MANUAL – SECTION 5
5
Advanced Configuration
The 8504 amplifier was designed to offer excep
-
tional versatility in operation. You can choose from
a range of field-configurable options, including:
•
Enable the unbalanced or balanced signal input
connections, or use both inputs.
•
Select DC-coupled or AC-coupled operation.
•
Enable DC Servo to ensure DC offset remains
at zero and safely drive coils and transformers.
•
Select Controlled-Current or Controlled-Voltage
modes of operation.
•
Select between two compensation networks for
Controlled Current operation: CC1, designed
for loads from 50 µH to 500 µH; or CC2, de
-
signed for loads from 500 µH to 1.5 mH.
•
Limit current output via programmable current
limits.
•
Adjust the amplifier gain from 0.16 to 40 in
increments of 0.16.
•
Configure two 8504 amplifiers for operation as
a Push/Pull (series) or Parallel system.
•
Enable electronic gain matching to optimize
parallel operation of two 8504 amplifiers.
•
Select and enable a synthetic impedance from
0.125 ohms to 0.875 ohms.
8504 Default DIP Switch Settings
Red = Default
DIP SWITCH SETTINGS
UP
DOWN
1 UNBALANCED INPUT
ON
OFF
2 BALANCED INPUT
ON
OFF
3 DC SERVO
ON
OFF
4 OPERATION MODE
CV
CC
5 COMPENSATION NETWORK 2
ON
OFF
6 COMPENSATION NETWORK 1
ON
OFF
7 CONTROL CONFIGURATION
MASTER
FOLLOWER
8 COUPLING
DC
AC
9 GAIN BIT 8 (MSB)
20
OFF
10 GAIN BIT 7
10
OFF
11 GAIN BIT 6
5
OFF
12 GAIN BIT 5
2.5
OFF
13 GAIN BIT 4
1.25
OFF
14 GAIN BIT 3
0.63
OFF
15 GAIN BIT 2
0.31
OFF
16 GAIN BIT 1 (LSB)
0.16
OFF
17 ELECTRONIC GAIN MATCHING
ON
OFF
18 SYNTHETIC IMPEDANCE BIT 3 (MSB)
0.5
Ω
OFF
19 SYNTHETIC IMPEDANCE BIT 2
0.25
Ω
OFF
20 SYNTHETIC IMPEDANCE BIT 1 (LSB)
0.125
Ω
OFF
21 CURRENT LIMIT BIT 4 (MSB)
+80A
OFF
22 CURRENT LIMIT BIT 3
+40A
OFF
23 CURRENT LIMIT BIT 2
+20A
OFF
24 CURRENT LIMIT BIT 1 (LSB)
+10A
0FF
1 2 3 4 5 6 7 8
ALL OFF = 0
ALL UP = 40
NOTE: ALL BIT SWITCHES ARE ADDITIVE. UP = ON.
ALL OFF = 10A
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Figure 5.1 – Default DIP Switch Settings and Descriptions
