Yenista Optics OSICS, Руководство пользователя

Страница: 81 / 252

Using the OSICS DFB Module
OSICS User Manual 81
BKR
TL
S-50
AT
N
DFB
ECL
T10
0
SL
D
SW
T
TLS
-A
G
SW
T
A
PC
MA
IN
Figure 51: Main Setup – Modulation Source (External)
3. Turn the rotary knob to put the cursor before EXTERNAL and press it to validate your
selection.
The
Main Setup menu is automatically displayed and the modulation is set to the
selected source.
Step 2 – Set the TTL-level signal generator:
1.
On the OSICS Mainframe rear panel, connect your external digital signal-generator to
the Mod. in BNC connector (see Figure 2, p. 18 ).
2. Apply the TTL signal not exceeding the maximum voltage of +5 V and repetition
frequency between 1 Hz and 890 kHz.
The green LED located next to the
Mod. In connector is lit to indicate that an external
signal-generator is connected.
Step 3 – Set the module modulation source to MAINFRAME:
1.
Access the DFB Unit Setup menu (see section Accessing an OSICS Module Setup
Menu, p. 33 ).
2. Expand the TTL Modulation menu and enter the Source sub-menu.
The Modulation source sub-menu appears and the cursor automatically points to
the current modulation source setting.
Figure 52: DFB Unit Setup – Modulation Source (Mainframe)
3. Turn the rotary knob to put the cursor before MAINFRAME and press it to validate
your selection.
Main
EXIT
1 2 3 4 5 6 7 8
Main Setup - Modulation source
ESCAPE
▲
Modulation source :
INTERNAL
EXTERNAL
Select a new value.
Main
EXIT
1 2 3 4 5 6 7 8
Unit Setup - Modulation source
ESCAPE
▲
Modulation source :
INTERNAL
MAINFRAME
Select a new value.