Olympus Sonic 1200S/HR, Руководство пользователя

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Control Descriptions 43
4.11 Pulser Menu
The PULSER menu key invokes the pulser menu shown and is used to adjust the operating
characteristics of the square wave pulser.
GAIN See GAIN parameter description in the Receiver menu section.
PULSE Adjusts the square wave pulse width. The adjustment range is 30ns to 1200ns in 1ns
increments.
DAMPING Selects the damping applied to the transducer crystal. The selections are 25, 50,
and 200 ohms. In PULSE ECHO mode, the damping load is electrically connected to both
transmit XMIT and receive RCV BNCs. In DUAL and THRU XMIT modes, the receive
crystal is connected to a fixed 100 ohm load and the damping load is electrically connected to
the transmit BNC only.
MODE Selectable between SINGLE, DUAL, and THRU XMIT modes. In SINGLE and
DUAL modes, the sound path distance displayed and the Menu Display range values are
corrected for sound path down and back time.
VOLTAGE Adjusts the square wave pulse voltage. The selections are 150V and 300V. The
selected voltage is shown on the status portion of the display.
4.12 Receiver Menu
The RCVR key invokes the receiver menu. This menu is used to adjust the receiver and display
video characteristics.
GAIN Adjusts the receiver gain in 0.2, 1.0, 2.0, 6.0, or 12.0 dB steps (established in the SPCL
menu). The adjustment range is 0 to 110 dB. The maximum gain is limited to 100 dB in
PULSER
RCVR