GAI-Tronics LE200, LE200-FSR, LE200-FLR Page/Party Line Extenders - Manual (Page 51)

Pub. 42004-701L2F
M ODEL LE200 S ERIES W ALL -M OUNT P AGE /P ARTY
®
L INE E XTENDERS P AGE 49 of 50
f:\standard ioms - current release\42004 instr. manuals\42004-701l2f.doc
04/09
Party Line Off-hook detection
DC resistance between L1 and L2 for off-hook ..............................................................................
≤300 Ω
DC resistance between L1 and L2 for on-hook..........................................................................
≥30,000 Ω
Minimum off-hook duration for detection.......................................................... 50 milliseconds (nominal)
Minimum on-hook duration for detection.................................................................... 5 seconds (nominal)
On-hook to off-hook propagation delay ..............................................
≤0.5 second includes detection time
Off-hook to on-hook propagation delay ..............................................
≤10 seconds includes detection time
N OTE : Rapidly changing off-hook or on-hook conditions may or may not be detected.
Contact Outputs
Contact output type ....................................................................................... DPDT miniature signal relay
Switching power.................................................................................................
≤30 W dc (resistive load)
≤62.5 VA ac (resistive load)
Switching voltage......................................................................................................................
≤110 V dc
≤125 V ac
Switching current ...........................................................................................................................
≤ 1.0 A
Minimum switching capacity.......................................................................... 10
µA, 10 mV dc (nominal)
N OTE : When neither the T1/E1 Link nor the LVDS link is detected, the contact outputs are de-energized.
Contact Inputs
Dry contact input open resistance .............................................................................................
≥ 20,000 Ω
Dry contact input closed resistance ...............................................................................................
≤ 200 Ω
Wet contact input open voltage...................................................................... 2.6
≤ voltage ≤ +3.6 volts dc
Wet contact input closed voltage ................................................................... 0.0
≤ voltage ≤ 0.23 volts dc
Contact input allowed voltage........................................................................ 0.0
≤ voltage ≤ +3.6 volts dc
Contact input sink current........................................................................................................
≤1.0 mA dc
Contact input state duration ............................................................................................................
≥50 ms
Contact input to contact output delay ..............................................................................................
≤50 ms
Contact input to contact output jitter ...............................................................................................
±10 ms
Contact input to contact output pulse width tolerance......................................................................
±10 ms
N OTES :
1. Rapidly changing contact inputs may or may not be detected.
2. Contact input to contact output specifications do not include the effects of relay bounce.
3. The contact input’s negative terminal is tied directly to the LE200’s signal ground.
4. Wet contact input voltages are measured at the input terminals on the 69442-xxx PCBA.
5. The “wet contact input closed voltage” may be difficult to achieve when connecting a bipolar open
collector output to a contact input.
6. A driving high wet contact input will source current to the LE200 when the LE200 is not powered.
This current may or may not prevent the LE200 from powering up properly.
7. Be aware of the ground loop(s) formed when using wet contact inputs.