HP 37717C, Calibration Manual, Page: 50 / 399

1-29
General Information
Specifications
relative to each other.
Range:
±
100 ppm in 0.1 ppm steps.
Bellcore GR-253-CORE and
ANSI T1.105.03: Bursts of periodic
single adjustments with added or
canceled adjustments. Polarity is
selectable. Bursts of periodic double
adjustments with pairs alternating in
polarity. In all cases the interval
between adjustments or pairs of
adjustments is programmable.
On starting to run any of the pointer
sequences an initialization sequenced
followed by a cool down period may be
run prior to running the chosen
sequence.
Transmit overhead
Overhead: Default selection: Standard
overhead values to Bellcore GR-253-
CORE. and ANSI T1.05
STS-3/STS-1 user-settable bytes:
TOH can be set in binary or HEX.
SOH: A1, A2, J0, E1, F1, D1 to D3.
J0 path trace: User-defined/predefined
16-byte ITU-T E.164 sequence.
LOH: K1, K2, D4 to D12, S1, M1, E2
(and access to bytes reserved for
national use plus all unmarked bytes
reserved for future international
standardization).
STS-1 SPE POH: J1, C2, G1, F2, H4,
Z3, Z4,N1.
J1 path trace: User-defined/predefined
16-byte ITU-T E.164 sequence or 64-
byte sequence.
VT6 SPE, VT2 SPE, VT1.5 SPE POH:
V5, J2, Z6, Z7.
J2 path trace: User defined/predefined
16-byte ITU-T E.164 sequence.
Overhead sequence generation:
A single or multi-byte overhead
channel is overwritten with a single or
repeated sequence of programmed
values. The sequence can contain up to
five different values each being
transmitted for up to 64,000 frames.
SOH:
6-byte channel A1A2
3-byte channel D1 to D3
Single byte channels: C1, E1, F1.
LOH:
9-byte channel D4 to D12
2-byte channel K1K2
Single byte channels: S1,.M1, Z1†,
Z2†, E2.
† Z1 and Z2 are not present in STS-1
mode.
High order POH:
Single byte channels: J1, C2, G1, F2,
H4, Z3, Z4, N1.
Overhead BER test: Any SOH, LOH
or POH (except A1, A2, H1, H2, Z1,
Z2) channel is selected and a BER
measurement is performed using a 2
9
-1
PRBS inserted into a 64 kb/s channel.
Single errors can be added to the test
pattern.
APS message generation: Messages
are displayed in text form as per
Bellcore GR-253-CORE for linear
architecture and to Bellcore GR-1230-
CORE for ring architectures (BLSR).
User programmed sequences (K1K2).
DCC drop/insert: The data supplied to
the DCC port can be inserted into either
the regenerator section or multiplexer
section data communications channel.
Similarly, data can be dropped from