A Specifications - Fluke 635 User Manual

Table A-2. Electrical Specifications (cont)
Characteristic
Ones Density (insufficient ones)
Excess Zeros
Excess Zeros
Yellow Alarm
DS1 Idle
DS0 Drop
DS0 Signaling Types
DS0 Signaling Bits
REF T1 Receiver
Input Impedance
Range
Compatibility
Framing
Frequency
TX T1 Transmitter
(QuickBERT-T1 only)
Line Code
Patterns
Loop Codes
LBO
Pulse Shape
Jitter Tolerance
Results
Display
Specification
<N ones in 8 (N + 1) bits, N = 1 to 23 per
ANSI T1.403
>15 consecutive zeros per ANSI T1.403
>15 consecutive zeros per ANSI T1.403
D4: >255 consecutive DS0
channels with bit 2 = 0;
ESF: 16 repetitions of "00FFh" on the 4
kbps data link
all 24 DS0 channels contain 00010111
per ANSI T1.403-1995
Selected DS0 channel to 8 data-bit LEDs
to speaker
Robbed Bit, CCIS, E-Bit
A, B, C, D
100 ohms ± 5%
0 to -36 dB
AT&T TA24/CB113
NONE, D4, ESF, SLC96
1544000 Hz ± 5 ppm
AMI or B8ZS
QRSS, 1 IN 7, 2 IN 8, 3 IN 24, ALL 0'S,
ALL 1'S, 1:1, NET55, OCT55, DALY55,
USER, THRU
CSU, NIU4, NIU5, NTWRK, LINE, PYLD,
ARM, HTU-R, HTU-C, HRE1, HRE2,
NREM, NLOC, NDU1, NDU2, CREM,
CLOC, CDU1, CDU2
Fixed at 0 dB
Complies with AT&T Pub 62411 and
ANSI T1.403
Complies with AT&T Pub 62411
4x20 liquid crystal display (LCD)
Appendices
A
Specifications
A-3