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5. Scale Signal Output
5-1. A/B signal and alarm output specifi cations
• Th e output specifi cations are compliant with EIA-422.
• A/B signal minimum phase diff erence t : 50 / 100 ns (See Table 1-1 in section 1-3 "Series Models.")
Note
• An error of about 50 ns is generated due to the synchronization of the A/B signal by the 20 MHz internal
clock.
• Th e minimum phase error can vary depending on the length of the output cable, cable capacity, receiver
load, and other factors.
• When an alarm occurs, the output signal becomes high impedance. An alarm signal is output during
the alarm status.
5-2. Analog Output Specifi cations
SIN / COS output specifi cations
(Over the measuring length and the entire operating temperature range)
Item
Symbol
Output signal
(+V
amplitude
Output signal phase
diff erence
Center voltage
+V
Off set voltage
(+V
(+V
Gain unbalance
Load resistance
Note 1: When terminator Z
= 120 Ω supply voltage = 5 V ±5 % (voltage of load resistance at both ends)
0
System 1: A signal output voltage p-p value − AB signal output average
AB signal output average
where
AB signal output average =
Output waveform diagram (when each output is viewed based on 0 V)
Th e A signal corresponds to SIN, and the B signal corresponds to COS.
Center voltage
+V
+V
OA
OB
V
V
–
–
OA
OB
BF1 Series
A signal
B signal
t
Fig. 5-1
) − (−V
), (+V
) − (−V
)
A
A
B
B
, +V
, −V
, −V
OA
OB
OA
OB
) − (−V
),
OA
OA
) − (−V
)
OB
OB
Table 5-1
A signal output voltage p-p value +B signal output voltage p-p value
+V
+V
A
B
–
V
–
V
A
B
Fig. 5-2
Specifi cations
Min.
Typ.
Max.
0.6
1.0
1.2
80
90
100
2.3
2.5
2.7
−50
0
50
−6
0
6
120
× 100
2
Amplitude
0 V
Units
Remarks
Vp-p
Note 1
º
V
mV
%
System 1
Ω
5-1
(E)
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