HP 37717C, Calibration Manual, Page: 45 / 399

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General Information
Specifications
1.544 Mb/s: Drop/insert via drop/insert
ports on option 110.
Pointer adjustment generation
Increment/decrement/alternating:
Provides a burst, selectable between 1
and 10 pointer adjustments (between 1
and 5 for TU-12 or TU-11 pointer).
New pointer value: The AU-4, AU-3,
TU-3, TU-2, TU-12 or TU-11 moves to
a selectable new location in a single
jump, with or without an accompanying
new data flag (NDF).
Frequency offset (and 87:3):
Pointer sequences are generated by
offsetting the frequencies of the AU-4,
AU-3 (in these modes the 87:3
sequence is generated to ITU-T G.783)
or TU-3, TU-2, TU-12, TU-11 and the
line rate relative to each other.
Range:
±
100 ppm in 0.1 ppm steps.
ITU-T G.783 sequences: 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 sequence
followed by a cool down period may be
run prior to the chosen sequence.
Transmit overhead
Overhead: Default selection: Standard
overhead values to ITU-T G.707.
SOH user-settable bytes: SOH can be
set in binary or HEX. RSOH: A1, A2,
J0, E1, F1, D1 to D3. J0 path trace:
User-defined/predefined 16-byte ITU-
T E.164 sequence. MSOH: K1, K2, D4
to D12, S1, M1, Z1†, Z2†, E2 (and
access to bytes reserved for national use
plus all bytes reserved for future
international standardization). VC-4
and VC-3 POH: J1, C2, G1, F2, H4, F3,
K3, N1. J1 path trace: User-defined/
predefined 16-byte ITU-T E.164
sequence or 64-byte sequence. VC-2,
VC-12, VC-11 POH: V5, J2, N2, K4.
J2 path trace: User defined/predefined
16-byte ITU-T E.164 sequence.
† Z1 and Z2 are not present in STM-0
mode.
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.
RSOH:
6-byte channel A1A2
3-byte channel D1 to D3
Single byte channels: C1, E1, F1.
MSOH:
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 STM-0
mode.
High order POH:
Single byte channels: J1, C2, G1, F2,
H4, F3, K3, N1.
Overhead BER test: Any RSOH,
MSOH or POH (except A1, A2, H1,
H2, Z1, Z2) channel is selected and a