2-1
IM 704420-01E
Names and Uses of Parts
2
2.1
Front Panel
KEY
LOCK
MEAS
SET
AVE
/T
0
2
4
4
8
6
12
8
16
10
%
deg
%
20
180
us
ms
ns
MEAS
x1
3TCD
xN
3TCD
xN
BI-PHASE
SPEED
DELAY
GATE TIME
FUNC
GATE
LOCAL
DATA
POWER
SCALE
PRESET
PHASE
10
20
TRIG
CLOCK
CLOCK
RF
PHASE
AUTO MAN
GP-IB
REMOTE
EQLZ
LEVEL
PLL
SHIFT
ARM
INH
DtoC
DVD
0.1s
0.5s
MAN
UTILITY
OPTION
10
5
DIGITAL JITTER METER
BI-PHASE
1M 40Vpk
σ
σ
Utility/Arrow (<) key
Moves along the digits when setting numeric values and operates
initialization procedure, DC output, ON/OFF of the numeric display,
version display and maintenance functions such as self-test and
calibration (sections 3.7, chapter 7, and section 9.4 to 9.6)
MEAS key
Switches the measured result shown on the display, initializes
settings, and executes performance test (sections 5.2, 7.4 and 8.6)
Rotary knob
Sets numeric values, selects setup information/items
and operates maintenance functions such as self-
test, calibration, and performance test (section 3.7,
chapter 4, 6, 7, section 8.4 and 9.4 to 9.6)
Power switch
(Section 3.4)
Adjustment trimmer
(Section 9.3)
Handle
Move the TA120E (section 3.1)
CLOCK key
Sets the clock signal (section 4.7)
Signal input connector
Connects the measurement cable for the RF signal,
clock signal or BI-PHASE signal (option*) (section 3.5)
TRIG key
Sets the trigger mode and slice level (section 4.3)
DATA key
Sets the polarity or slope of the data signal and the equalizer
(sections 4.1 and 4.2)
SCALE key
Selects the meter scale and operates preset function,
self-test, calibration, etc. (sections 4.1, 4.2, chapter 6,
sections 9.4 to 9.7)
RF signal input indicator
Blinks when the trigger is activated on the RF signal input
Meter
Visually adjust the phase difference, indicates the
measured results, and adjusts the zero position of the
needle (sections 4.8, 5.1, and 9.3)
FUNC key
Selects the measurement function,
sets the
×
N speed, and operates
the self-test (sections 4.1 and 9.4)
GATE key
Sets the gate and gate time and operates
the self-test (sections 4.4 and 9.4)
ARM key
Sets arming and arming delay and operates
the self-test (sections 4.5 and 9.4)
INH key
Sets inhibit and operates the
self-test (sections 4.6 and 9.4)
SHIFT key
Press this key to light the indicator and then
press a key to set the item indicated above
each key (sections 4.1 to 4.5, 4.7, 7.1, and
8.4)
Operates DC output, calibration, and
performance test (sections 7.1, 9.5, and 9.6)
LOCAL key
Releases the remote control through
communications, sets the GP-IB address,
and operates calibration (sections 8.2, 8.4,
and 9.5)
PHASE key
Adjusts the phase (sections 4.8)
Unit indicator
The unit for the measured result or setup value shown on the display lights
Display
Displays measured results, setup values, setup items, and other information on the 7-segment LED
(chapters 4, 5 and 7)
Setup indicator
Lights when setup value is shown on the display (section 3.7, chapter 4, 7 and section 8.6)
Measurement indicator
Lights or blinks when the measured results are shown on the display
Remote indicator
Lights when the TA120E is in the remote
mode through communications (section 8.2)
KEY LOCK indicator
Lights when key lock is ON (section 7.6)
Option/Arrow (>) key
Moves along the digits when setting numeric values, selects setup
items, and operates maintenance functions such as self-test and
calibration (sections 3.7, chapter 7, and section 9.4 to 9.6)
BI-PHASE signal input indicator
Blinks when the trigger is activated on the BI-PHASE signal input
* See the TA120E Digital Jitter Meter Option Function User's Manual (IM704420-51E).
Chapter 2 Names and Uses of Parts
