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REAR PANEL CONTROLS
1. AC POWER INPUT. An IEC-320 C14 three-pronged recessed male socket is
provided on the back panel for AC power connection to the instrument. One end of
the detachable power cord that is supplied with the instrument plugs into this
socket.
2. AC FUSE DRAWER. The two fuses that protect the AC input are located in this
drawer. Please see the “FUSES” section of this manual for more information.
3. DC FUSES. These two fuses protect the internal DC power supplies. Please see the
“FUSES” sections of this manual for more information.
4. GATE. This TTL-level (0 and +5V) logic input can be used to gate the triggering of
the instrument. This input can be either active high or active low, depending on the
front panel settings or programming commands. (The instrument triggers normally
when this input is unconnected). When set to active high mode, this input is pulled-
down to ground by a 1 kΩ resistor. When set to active low mode, this input is pulled-
up to +5V by a 1 kΩ resistor.
5. TRIG. This TTL-level (0 and +5V) logic input can be used to trigger the instrument, if
the instrument is set to triggering externally. The instrument triggers on the rising
edge of this input. The input impedance of this input is 1 kΩ. (Depending on the
length of cable attached to this input, and the source driving it, it may be desirable
to add a coaxial 50 Ohm terminator to this input to provide a proper transmission
line termination. The Pasternack (www.pasternack.com) PE6008-50 BNC feed-thru
50 Ohm terminator is suggested for this purpose.)
6. GPIB Connector. A standard GPIB cable can be attached to this connector to allow
the instrument to be computer-controlled. See the “Programming Manual for -B
Instruments” for more details on GPIB control.
GATE
TRIG
AMP/PW
RS-232
GPIB
MON
OS
GND
18
2
3
6
1
4
5
8
9
7
10
11
Содержание AVIR-2-B
Страница 39: ...PCB 235A HIGH VOLTAGE DC POWER SUPPLY...
Страница 40: ...PCB 216D PRF PW TR ADJUST...
Страница 45: ...PERFORMANCE CHECKSHEET 45...