Moog N123-134 Series Setup

SPECIFICATIONS

Input
Differential input across terminals
10 and 11.
AC input signal level should
be from .07 to 7.0 Vrms for
±10 VDC output.
Input impedance can be assumed
to be 40KΩ (with standard
values of R30, R31, R32, and R33).
Outputs
Excitation Output:
Frequency varies with C3, C4,
and R3.
As shipped: Freq. varies
100 to 2,000 Hz
Remove C3—Freq. varies 500
to 10,000 Hz
Amplitude—2 to 11 V p-p
Stability—amplitude varies
≤ 250 ppm/°C
N123-134 Exciter/Demodulator:This Snap Trac module contains a power
oscillator and a demodulator for use with LVDT's, synchros and other carrier
excited, amplitude modulated, transducers. Carrier frequencies can be set
from 100 to 10,000 Hz.
SPECIFICATIONS
Demodulator Gain: General
expression for gain of the DC voltage
at terminal 12 assuming R33=R32,
R31=R30 and R34 fully CW
(i.e. max span setting)
R R R
32 37 45
e =1.41* *1+ * (e -e ) VDC
12 11 10
R R R
30 38 39
where e and e are Vrms
10 11
Differential Amplifier Gain:
R (e -e )
Vout = ( )
32 10 11
R
30

FEATURES

Construction
Plug-in connectors for quick installation of board.
Test points on all critical signals for easy system setup.
Component standoffs on all user-configurable components.
Twenty-turn potentiometers for all adjustable controls.
Rugged construction with solder mask for reliability.
Demodulator Output:
to ±10 VDC nominal at Terminal 12
Ripple: < 40 mV p-p at
≥ carrier freq.
Linearity: ≤ ±0.2% at 1.2 kHz
Stability: ≤ 250 ppm gain/°C
±0.1 mV/°C
Polarity: Output at terminal
12 is negative when voltage at
terminal 11 is in phase with
terminal 3
Load Impedance: > 5KΩ
Frequency Response: Phase lag of
demodulator output signal increases
linearly from 0˚ to 180˚ as frequency
of modulation increases from zero to
the carrier frequency.
Temperature Range:
-20˚C to 50˚C (-4˚F to 122˚F)
Power Required:
±E: ±15 VDC reg, 3-wire @ ±50 mA
at pin-6, 7 & 8
±V: ±15 VDC to ±22 VDC unreg @
±40 mA, 3-wire at pin-1, 2 & 9
(or 7)
This power is available from the
Model N121-132A Snap Trac
Servocontroller.
N123-134 Series
Exciter/Demodulator
Q2
R26
D2
D3
U3
R24
R23
C6
R27
R22
D4
D5 R11
R28
R6
C8
C10
R20
R29
R7
R3
R33
D6
R34
D7
R31
U4
R30
R44
C11
R45
U6
R41
R40
R42
MODEL:N123-134
SN:

MOUNTING HARDWARE

PVC Snap Trac, Part Number 65419-1

DIMENSIONS

Exciter/Demodulator: 3.25 in x 6.00 in long
Maximum Component Height: 2.42 in
Q1
R25
R18
D1
R17
R19
R10
U2
R9
R13
R16
R12
R14
R5
R15
R21
R8
U1
R2
R1
R4
C4
R35
C3
R32
C16
R37
C17
R38
R36
R39 U5
R43
C13 C12