CH Tech Pulse Generator Instrukcja Użytkownika Pobierz pdf (Strona 13)

3.0 FUNCTIONAL DESCRIPTION

3.1 GENERAL

The VX462B is configured, controlled, and statused through on-board registers accessible

through the VXI backplane. These registers control the mode of operation, pulse repetition

interval, pulse width, delay time, output amplitude and an output relay. A simplified block

diagram of the module is shown in Figure 2.

CONTROL

DATA BUS

ADDR BUS

CONTROL

DATA BUS TRIG OUT

TRIG IN/GATE

PULSE OUT

LOGIC

CONTROL

ADDRESS

DECODE

VXI &

USER

REGISTERS

PULSE

GENERATOR

LOGIC

VXI

INTERFACE

Figure 2. Simplified Block Diagram

3.2 SWITCHES AND JUMPERS

The following switches are used to

configure the VX462B. Refer to

Figure 3 for the switch and jumper

locations.

LOGICAL ADDRESS An 8-bit

logical address switch is provided

to uniquely identify the module in

the system. Refer to Section 4 for

switch definition.

OUTPUT IMPEDANCE

The

VX462B can be configured with a

50 Ohm or a 2 Ohm output

impedance. Install a jumper in J5

only for 2 Ohms, and J6 only for

50 Ohm series output impedance.

Logical Address

Selection

128

J6J5

50 Ohm 2 Ohm

Output Impedance

Selection

Figure 3. Hardware Configurable Controls

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 35 36

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