Scan And Rel Functions - Stanford Research Systems SR844 User Manual

Scan and Rel Functions

SSTR(?){f}
SFIN(?){f}
SSTP(?){i}
SMOD(?){i}
RSTO i
RRDY? i
RCLR
RMOD(?){i}
The SSTR command sets and queries the Scan Start Frequency. The parameter f
is a real number of Hz. The Start Frequency may not be set while a scan is in
progress.
The SFIN command sets and queries the Scan Stop Frequency. The parameter f
is a real number of Hz. The Stop Frequency may not be set while a scan is in
progress.
The SSTP command sets and queries the Number of Scan Points. The parameter
≤ ≤
i is 2 11. The Number of Points may not be set while a scan is in
i
progress.
The SMOD command sets and queries the current scan point.
SMOD i moves to point i (1
Points. Use SMOD to move from scan frequency to scan frequency (in any order).
SMOD 0 exits Scan Mode.
The RSTO command stores XY (i=1) or R[dBm]
the measurement configuration at the current frequency.
The RRDY command queries whether any Rel Values are stored for the current
frequency. The parameter i selects XY (i=1) or R[dBm]
returns 0 (no Rel Values) or 1 (Rel Values stored).
The RCLR command clears all stored Rel Values and Configurations.
The RMOD command sets and queries REL MODE Off (i=0) or On (i=1).
≤ ≤
N) in the scan where N=Number of Scan
i
θ
(i=2) Rel Values along with
SR844 RF Lock-In Amplifier
Scan and Rel 4-21
θ
(i=2). RRDY? i