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7.2. SPECIAL PARAMETER FUNCTIONS AND SELECTION
Number
01
02
03
04
05
06
07
08
28
30
The Special Parameters do not have their own selection key, but are selected using the
following key operations:
1.
Select the Special Parameter number using the keyboard.
2.
Press the Front Panel Set-up "Parameter" key.
The Auxiliary LED will light and the parameter number and value will be displayed. The
parameter value can now be changed using the thumbwheel or keyboard controls. If any
auxiliary instruments (which use Special Parameters) are connected to the 1050, then the
relevant Special Parameter(s) will also be included in the set-up sequence.
Parameter Name
Code
Parameter Value
Vibration Meter Units
0-1
Sl-lmperial
Vibration Meter Time Constant
0
Auto
1-4
0,3-1-3-10s
Recorder X-Ramp Sensitivity
0
Log. Range= 1 to 10 000 Hz
1
Lin. Range= Lower Limit to Upper Limit
Recorder Mode Control
0
Start/Stop follow sweep
1
Start/Stop follow sweep and automatic
paper feed at Upper Sweep Limit
Slave Filter Bandwidth
0-2
3%-10%-30%
Compressor External Filter
0-1
Out-In
Vibration Meter External Filter
0-1
Out-In
Narrow Band Random Bandwidth
0
Off
1-6
3,16-10-31,6-100-316-1000 Hz
Compressor Cross-over Safety *
0-1
On-Off
Level Adjustment *
-10dB to +5dB
T01154GBO
• See notes below.
Table 7.3. Special Parameter Functions and Selection
Notes: When special parameter 28 is set to "Off", the safety control is disabled at the
cross-over points for 15 periods of the generator sine signal. This is useful when
using test profiles which include steps in the vibration level and when using
narrow bandwidth tracking filters.
Special parameter 30 is only accessible when the 1 050 is in operation. It allows
adjustment of control levels over the range -10 dB to +5 dB relative to the "Set
Levels". Variation of this parameter can only be achieved using the thumbwheel.
When this parameter has been changed, it deviates from zero and the "Set Lev-
els" are displayed as flashing values. The adjustment of the control level is auto-
matically reset to zero on switching the 1050 to "Stand-by".
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