13
the GATE TIME.
d. TOTAL A: When this mode is selected, the unit counts the cycles of
the signal at input A and continuously displays that count.
e. RPM A:
When this mode is selected, the unit displays the RPM
(Revolutions Per Minute) of the signal at input A.
POWER SWITCH:
This push type switch, turns on the power when pressed.
TILT STAND:
Pull out to adjust tilt.
REPLACE ONLY W I
TH FUSE OF SAME RA TI
N G A N D TYPE.
DO NOT REMOVE COVER.
REFER SERVI
CI
NG TO
DI
SCONNECT POW ER SUPPLY BEFORE REPLACI
NG FUSE.
1
I
NT STD OUT
QUA LI
FI
ED PERSONNEL.
EXT STD I
N
TO PREVENT ELECTRI
C SHOCK H A ZA RD AND FI
RE,
RS-
232C
W A RNI
NG
6
5
2
3
4
FUSE
230V~,
50H z/
60H z
FIG.3 REAR PANEL
AC INLET:
AC power input connector
INT/EXT TIME BASE SELECTOR:
Selects the source of the time base. EXT.STD. IN
sets up BNC
as a nominal 600
Ω
input impedance
path for an external 10 MHz time base signal. INT. STD.
OUT sets up BNC
to monitor the internal time base
signal.
GROUND TERMINAL
FUSE HOLDER:
Replace fuse by unscrewing
INT/EXT TIME BASE BNC:
Provides a connector through which the internal time
