Stanford Research Systems SR844 User Manual page 96

3-38 Scan - Rel
XY READY These indicators are on if there are XY or R
R[dBm]θ θ θ θ
frequency. They do not imply that these Rel Values are being applied to the current
measurement.
Rel Mode
This key toggles REL MODE.
In SCAN MODE with REL MODE on, the instrument automatically recalls the stored
Rel Configuration and Rel Values at each scan frequency (if previously stored, as
indicated by XY READY or R[dBm]
displays is on whenever the recalled Rel Configuration and Rel Values are in effect.
If the current scan frequency does not have any stored Rel Values (as indicated by
XY READY or R[dBm]
REL indicator is off in this case.
The stored XY Rel Values are applied as X and Y offsets (adjusted for the current
phase). The stored R[dBm] Rel Value is applied as the R[dBm] offset. The stored
Value is applied as the Reference Phase (there is no phase offset). Offset indicators
within the CH1 and CH2 displays are turned on as appropriate (as well as the REL
indicator).
Turning REL MODE off does not change the current measurement. The current
measurement configuration remains in effect. As long as REL MODE is off, stored Rel
Values and Configurations are not recalled at any other scan frequencies.
CLEAR ALL
This key sequence discards all stored Rel Values and Configurations.
[Shift–Rel
Mode]
CLEAR ONE
This key sequence discards the stored Rel Values and Configurations at the current scan
[Shift–Start/
frequency.
Step]
Any key that All keys in the SIGNAL INPUT and SENSITIVITY sections as well as Slope
changes the Up/Down, Ratio, Recall, Preset, Ref Z-In, Ref Source change the measurement
instrument configuration and turn the REL indicators off. This does not affect REL MODE.
configuration
Start/Step
This key is used to step through the scan frequencies. If REL MODE is on, stored Rel
Configurations and Values (if previously stored) will be applied.
SR844 RF Lock-In Amplifier
θ
Rel Values stored for the current scan
θ θ θ θ )
. The REL indicator within the CH1 and CH2
θ θ θ θ )
, the current configuration and offsets remain in effect. The
θ
Rel