Textron Greenlee Communications DataScout 10G, User Manual

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Users Manual
DataScout 10G & 10Gx
73
PBX (TRUNK) E&M I-V
E&M signaling defines a PBX (TRUNK) and a CO (Signaling) using 2 leads E (Ear or
Earth), M (Mouth or Magnet) for Type I and V, an additional 2 leads (4 total) SG (Signal
Ground), SB (Signal Battery) for type II, III, IV. The Trunk (PBX) applies battery to its
M lead for Off-Hook and monitors its E lead for Signaling side Off-Hook. See table be-
low for On-Hook and Off-Hook Trunk states for the various E&M types. E&M Testing
provides direct user control of On-hook/Off-hook states and monitoring of Far-end
Hook state in all modes!
Type II, III, IV connect SG and SB pairs to the SG/SB jacks of the test set.
Note in Type I and V you CANNOT connect to SG/SB bantam jacks.
CO DID
Emulates a CO DID-IMMEDIATE circuit. The test set generates DTMF, DP and MF.
The test set also measures Tip-Ring voltage, current, digit decode, frequency & level,
noise, noise with tone and displays the state of the far-end. In CO DID-Immediate
mode the test set uses a 20ma holding circuit for off-hook conditions. Tap DIAL to en-
ter the desired dial digit string. To go Off-Hook (Seize the circuit) tap Dial from the DI-
AL screen or tap On-hook, the test set draws loop current and outputs the digits.
CO DID-Wink
Emulates a CO DID-Wink circuit. The test set generates DTMF, DP and MF. The
DataScout 10G also measures Tip-Ring voltage, current, digit decode, frequency &
level, noise, noise with tone and displays the state of the far-end. In CO DID-Wink
mode the test set uses a 20ma holding circuit for off-hook conditions.
In CO DID-Wink, Tap DIAL to enter the desired dial digit string. To go Off-Hook (Seize
the circuit) tap Dial from the DIAL screen or tap On-hook, the test set draws loop cur-
rent and monitors for WINK (Tip/Ring polarity reversal) then transmits digits to the sta-
tion (PBX). Tap on the STATE button to view associated wink timing measurements.
SELECTIVE SIGNALING (SS1, SS4) 2&3 Digit
Selective Signaling is typically used on F.A.A. point to point or multipoint circuits that
allow a caller to dial a two or three digit dial code for destination party. SS uses Fre-
quency Shift Key (FSK) 2400 (make) & 2600Hz (break) at a -8dBm0 level when dialing.
The number of digits in dial code is 2 or 3 with codes of 81 or 729 respectively. 1 can
be used for backspace or digit
– for troubleshooting it is always displayed when re-
ceived.