Racal Instruments 9916 User Manual

Overflow Procedure
2.3 Enhanced resolution at higher frequencies can be obtained by "overspill ing I1
one or more of the left-hand digits. First, select a short gate time and record
the most significant digits displayed. Then select a longer gate time to display the less
~ significant digits to the required resolution. The OVERFLOW indicator will I ight to show
that one or more digits are being overspilled at the longer gate time .
.
~ FREQUENCY MEASUREMENT (BURST)
2.4
NOTES 1: The minimum burst duration is 40 ms pi us gate time.
2: The user may, if desired, use the BURST mode to obtain a single
shot reading from a continuous input signal.
(1) Set the NORMAl/BURST/C HECK switch to BURST. Select the required
input channel, and connect signal line to appropriate input socket.
(2) Press and release the RESET button. The display (except the d.p.) will
go blank. When a signal burst is received it will be measured and the
display held until the RESET button is operated again.
FREQUENCY MEASUREMENT (LF OPTION)
2.5
(1)
Set the Channel Selection switch to LF.
(2)
Connect the external signal to the I B' input socket (high impedance).
The facility is suitable for signal frequency up to 25 kHz, but not with
BURST mode.
(3) Set the RESOLUTION switch as required.
NOTE: When no input signal is appl ied it is normal for the instrument
to show a few counts.
_. BATTERY ECONOMY OPERATION
2.6
(1)
Prepare the instrument for battery power operation (para. :2.1).
(2) Set the OPERAH!STAt'--IDBY switch to SlANDBY and press and release
the RESET button. The instrument will operate for approximately one
m inute and then revert to standby .. To repeat the operation press RESET
when required.
(3) The OVERFLOW/STANDBY I. e. d. wi \I I ight when the instrument IS In
the standby condition.
2-2
9916Vol.2

Racal Instruments 9916 Specifications

General

Brand	Racal Instruments
Model	9916
Category	Measuring Instruments
Language	English