11
ISOMET
Description
Variant
Standard
-A
-D
t
R
RF rise time resulting from large signal
modulation.
<250 ns
<250 ns
<250 ns
t
F
RF fall time resulting from large signal
modulation.
<50 ns
<50 ns
<50 ns
t
ART
Latency delay between a change in
modulation level (A-Mod or D-mod) and RF
output.
60 ns
60 ns
60 ns
t
GRT
Latency delay between a Gate High input
and RF output fully enabled.
200 ns
NA
NA
t
GFT
Latency delay between a Gate Low input
and RF output fully disabled.
100 ns
NA
NA
Table 1:
Timing spec’s:
Time
Analog
Modulation
Input
(0 - 10V)
AM Modulated
RF Output
Zero Order
Control Range
Max Laser O/P
0 W
Ton
Vmod
Minimum
(not 0)
Maximum
Maximum
(= Laser O/P)
First Order
Control Range
0 W
Minimum
FIRST ORDER
ZERO ORDER
RF
tgm
GATE
DRIVER INPUTS
POT Set Level
Figure 4: Illustration of Laser Beam Modulation and RF driver controls
