HP 8530A, Руководство по эксплуатации и программированию, Страница: 403 / 439

Common Error Messages
N
\NO IF FOUND"
The usual cause is inadequate power at the reference input of the HP 8530A (a1 is usually used
as the reference input). V erify that the appropriate power levels are available , especially at the
reference phase lock input by pressing:
P ARAMETER 4 MENU 5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE PARAMETERS
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SERVICE 1 a1
The signal level should be between 045 and 010 dBm.
If you are using an HP 85309A frequency converter , make sure you are not using Ramp sweep
mode . Use Step sweep mode instead.
O
\OPTION #005 NOT INST ALLED"
The position encoder functions cannot be used unless the HP 8530A is equipped with option
005. This message is displayed if your HP 8530A does not have option 005 installed. Option
005 adds a new PC (printed circuit) board to the HP 8530A, and adds a new rear panel
connected (ENCODER INTERCONNECT). Contact your HP representative for more information.
\O VERSPEED ERROR - B A CKUP"
Y ou are moving the positioner so fast that the HP 85370A P osition Encoder cannot track the
measurement. Overspeed conditions may occur when the measurement uses high averaging
factors with small increment angles . T o correct the error:
1. Stop forward movement.
2. Move the positioner backwards until the receiver beeps .
3. Continue with the measurement either at a slower rate , with a larger increment angle , or
with a smaller averaging factor .
20-8 In Case of Diculty