11 Technical Appendix
Generator:
The generator of TCR180 is capable of producing time codes in IRIG-A/B/G, AFNOR, C37.118 or IEEE1344
format. The codes are available as modulated (3 V
pp
/1 V
pp
into 50
Ω
) and unmodulated (DC Level Shift) signals
(TTL into 50
Ω
and RS-422).
Regarding time code and its offset to UTC, the receiver and the generator can be configured independantly.
Thus TCR180 can be used for code conversion.
Key Features
•
IRIG Generator
•
4 programmable Pulse Outputs
•
Frequency Synthesizer
•
Battery Type CR2032
Figure 1: Jumper Settings: 600
Ω
Technical Specifications
Receiver Input
AM-input (BNC-connector):
insulated by a transformer
impedance settable 50
Ω
, 600
Ω
, 5 k
Ω
600 mV
PP
to 8 V
PP
(Mark)
Input Signal
DC Level Shift input:
insulated by photocoupler
internal series resistance: 220
Ω
maximum forward current: 60 mA
diode forward voltage: 1.0 V...1.3 V
Decoding
Decoding of the
following telegrams
possible:
IRIG-A132 / A133 / A002 / A003
IRIG-B123 / B122 / / B126 / B127 / B002 / B003 / B006 / B007
IRIG-G142 / G146 / G002 / G006
AFNOR NFS 87-500
C37.118
IEEE1344
Accuracy of
Time Base
Required Accuracy of
Time Code Source:
max 100
µ
sec Jitter / offset 1E-5
IMS - LANTIME M4000
Date: 27th May 2021
77
