AM-48 Test Set (18-0015) Self-Test Instructions
0015-S05
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5.4 Send 1004 Hz
Send 1004 Hz switch settings are depicted in Figure 5-4, while the
displays are depicted in Figure 5-5.
A. Rock Switch 6 to move SEND menu cursor to 1004.
Note: Turn volume control (“Switch” 15) up or down as desired to
increase or decrease the volume of the speaker sound. With
Switch 14 in <MON SND>, the speaker is monitoring the
1004 Hz tone being sent.
B. Rock Switch 5 if needed to move MEASURE menu cursor to L/F.
C. Read “00.0 ±0.1 DBM” and “1004 HZ” on display.
D. Rock Switch 5 to move MEASURE menu cursor to NOISE.
E. Read “90.0 ±1.0 DBRN” (“00.0 ±1.0 DBM” for AM-48E) on
display.
F. Rock Switch 5 to move MEASURE menu cursor to NOISE (to the
right of HOLD TONE).
Note: HOLD TONE will be darkened for the remaining steps in this
paragraph.
G. Read typically “32.0 DBRN” (must be <40.0 dBrn) and “1004 HZ”
on display; for AM-48E, “-58.0 DBM” (must be <–50.0 dBm).
H. Rock Switch 5 to move MEASURE menu cursor to S/N (signal-to-
noise ratio).
I. Read typically “58.0 DB” (must be >50.0 dB) and “1004 HZ” on
display.
J. Rock Switch 5 to move MEASURE menu cursor to Ø JTR
.
K. Read “JITR 00.0 ±0.2˚” on display.
L. Rock Switch 5 to move MEASURE menu cursor to ∆ JTR
.
M. Read “JITR 00.0 ±0.2” on display.
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