Dressler CESAR 1312, User Manual

Page: 52 / 194

4-18 Communication Interfaces CESAR 1312 (E)
Dressler
®
HF-Technik GmbH
8 21 RF FORWARD/
LOAD POWER
REGULATION Digital
input
Use this signal to select
between RF forward power or
load power regulation. Apply
a positive DC input voltage of
4 V to 30 V to regulate on
load power. An open
connection to pin
8 or a DC
input voltage of less than
1.5 V causes forward power
regulation.
Load power is defined as
forward power minus
reflected power.
Note: Pin 6 also changes the
regulation mode.
For a wiring diagram, see
Figure 4-15 on page 4-25 .
9 Return for pin 22 See pin 22.
10 23 INTERLOCK
LOOP Digital
input
To satisfy the interlock and
enable RF power in the
generator, close an external
loop from pin 23 to pin 10. A
resistance of 15
Ω
or less
across this pin closes the
loop. Pin 23 feeds this loop
via a current limiting circuit
(maximum 120 mA).
Alternatively, you can satisfy
the interlock by applying a
voltage of +4 V to +30 V
(referenced to ground) to pin
10.
For a wiring diagram, see
Figure 4-16 on page 4-25 .
11 Return for pin 24 See pin 24.
12 Reserved
Table 4-2. 25-pin User Port pin descriptions (Continued)
Pin
Number
Return
Pin
Name Signal
Type
Description