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Front Panel Set-up:
Reset:
10
e
Entry Disabled
Fig. 2.2. Field-entry keyboard and thumbwheel
Once a value has been set in the echo field, one of the four ENTER
keys must be pressed to set the selected parameter value to the echo
field value raised by the exponent of the associated ENTER key.
Any attempt to set a selected parameter to a value outside the speci-
fications will result in setting the parameter to its limit value.
If entry of a parameter value is not allowed, the Entry Disabled LED
(on the right of the Field Entry keys) will flash indicating that the se-
lected value cannot be changed.
Two keys on the left of the Field Entry controls (refer to Fig. 2.3).
"No": Sets the front-panel to the test set-up in 1
,2,3
or 4. Pressing
"No" for a second time switches between "Field Entry Enable" and
"Disable". The Entry Disabled LED will light when entry is disabled.
"Parameter": Selects the set-up sequence for step-by-step guidance
through the test parameters. Pressing the key selects the "First" pa-
rameter, whose LED will light, and causes the "Parameter" LED to
flash. Consecutive pressing of the key will select the "Next" parameter
according to the set-up sequence. When an auxiliary instrument is
connected to the 1053, the set-up sequence will automatically include
the associated special parameter(s). The LED display will show the
parameter number and the actual parameter value with the Aux. LED
(on the generator display) lit. Other special parameters can be se-
lected using this key, refer to section 7.2 for further description of the
special parameters.
Single key on the left of the compression meter (refer to Fig. 2.4). It is
pressed together with the required numeral to reset the controller to
the following conditions:
"Reset 0": Has the same effect as switching the instrument "Off" and
then switching the instrument "On" again.
"Reset 1" to "4": Sets the front-panel test set-up to the set-up condi-
tions stored in the selected front panel.
"Reset
5":
Sets the actual front panel to default values. Refer to sec-
tion 7.3 for further details of the default values.
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