Stanford Research Systems SR844, User Manual

Page: 123 / 246

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